How Do You Know Your Transmission Sensor Gone Bad

March 13, 2022 Post a Comment

Dan Ferrell writes about do-it-yourself auto maintenance and repair. He has certifications in automation and control technology.

Problems That Can Exist Caused by a Failing Camshaft Position Sensor

A failing camshaft position sensor (CMP sensor) tin produce a confusing range of problems, depending on the way it fails and the model of the car:

On some vehicles, a declining camshaft sensor may lock the transmission in a unmarried gear until yous plow off and restart the engine. This bicycle may repeat intermittently.
If the sensor begins to fail while your motorcar is moving, you may feel the car jerking while losing power.
Y'all may experience a noticeable loss of engine ability. For example, the engine can't accelerate in a higher place 35mph.
The engine may stall intermittently.
You may notice poor engine operation including irregular acceleration, misfiring, difficult starting, or surging.
On some car models, a failed CMP sensor volition forbid the ignition from making a spark, then that the engine won't start at all.


Index
I. A Camshaft Position Sensor Tin Fail Without Warning
II. What Is a Camshaft Position Sensor?
III. How the Sensor Can Neglect
IV. CMP Codes and What They Mean
V. Camshaft Position Sensor Location
VI. CMP Sensor Troubleshooting
Vii. Video: Testing a Camshaft Position Sensor
Eight. What If My CMP Sensor Seems to Exist Working Find?
9. Sensor Replacement and Cost

I. A Camshaft Position Sensor Can Fail Without Warning

An intermittent or complete CMP sensor failure while on the route could be dangerous. It could happen at any time: You are driving on the highway, moving along in fast traffic, when your engine suddenly loses power. In that location is nothing to do but scout in horror as a vehicle approaching at seventy miles an hour rear-ends you. Not a pretty moving-picture show, but it'southward happened many times.

Other times the commuter becomes aware of a failed CMP sensor when the engine refuses to start.

Here, we'll explore the symptoms of a bad camshaft position sensor and what y'all can do about it. But allow's discuss first what the sensor does.

Ii. What Is a Camshaft Position Sensor?

The camshaft controls the opening and closing of the intake and exhaust valves.

Photo courtesy of Joe Goldberg on Flickr

Your engine's cylinder caput houses one or two camshafts—a shaft equipped with offset lobes—to operate the intake and exhaust valves. The crankshaft, located in the engine block, drives the camshaft using gears, a timing chain, or a timing belt.

To make up one's mind which cylinder is in its ability stroke, your car'south estimator monitors the rotating position of the camshaft relative to the crankshaft position using a camshaft position (CMP) sensor. It uses this data to arrange the spark timing and the operation of the fuel injectors. Thus, the CMP sensor affects fuel economy, emissions command, and engine efficiency.

Camshaft position sensor (Hall-effect type) — Camshaft position sensor (Hall-effect blazon)

Teresa Trimm via Flickr (CC BY-SA 2.0)

The two nearly common camshaft sensors y'all'll encounter are the magnetic and Hall-effect types. Both transmit a voltage betoken to an electronic control module or to the car'south computer.

The magnetic blazon produces its own Air conditioning (alternating current) signal (a sine wave), and you can place it by its two wires. The Hall-issue type uses an external power source to produce a digital betoken (a "square moving ridge," on-or-off) and has three wires.

Notation: If yous are new to all this, yous should know that the camshaft position sensor is a unlike part from the crankshaft position sensor.

Three. How the Sensor Tin can Neglect

Simply similar every part or component in your car, the CMP sensor volition somewhen terminate working when it'southward reached the terminate of its service life, considering an internal part, wire, or related component has failed. The symptoms your engine may feel at this point can vary, depending on the type of sensor failure: for example, a problem in the excursion, the connector, the sensor itself, or a related component.

Once your car'south computer detects a CMP sensor failure, it will trigger the engine low-cal and store a diagnostic problem code (DTC) in its memory (see the table below for mutual camshaft position sensor trouble diagnostic codes).

IV. CMP Codes and What They Mean


Common CMP Trouble Codes	Source of Problem
P0340 CMP	Circuit malfunction
P0341 CMP	Circuit range or performance problem
P0342 CMP	Circuit depression input
P0343 CMP	Excursion loftier input
P0344 CMP	Excursion intermittent

V. Camshaft Position Sensor Location

As you may expect, the specific location of the camshaft position sensor varies by a vehicle's make and model. On most models you tin can find the sensor somewhere around the cylinder caput. Look around the height section of the timing belt/chain cover (in the front of the engine) or at the rear end of the cylinder caput. Some GM models may have a special compartment for the sensor.

Also, some Mercury Villager and Nissan Quest models locate the CMP sensor inside the distributor housing, besides as some Dodge Ram B1500, B2500, and B3500 series models with gasoline engines.

Depending on the specific model of your car, your engine may have 1 or more cam sensors.

If you need aid finding the sensor(s), check the vehicle service transmission for your particular model. You may notice a re-create in the reference department of your local public library. I highly recommend that yous buy an aftermarket repair manual for your specific vehicle brand and model (Haynes is a good inexpensive brand) for reference when doing maintenance and pocket-sized repairs.

VI. CMP Sensor Troubleshooting

If your car estimator has already triggered the engine low-cal, you may recollect the code (the DTC) using a code reader or a relatively inexpensive scan tool. If you don't own a lawmaking reader and can't afford to buy i, and you nevertheless tin can drive your auto safely, just get to a nearby auto parts store that retrieves DTCs for costless.

After confirming a CMP-sensor related problem code, it's worth doing some elementary tests. A trouble code pointing to a potential CMP sensor failure doesn't necessarily mean that the sensor itself is bad. You may be dealing with a wire, connector, or related component failure that you can ready yourself.

All the same, confirming the adept or bad operation of a camshaft sensor may require a scope. A failing sensor signal, for example, may be difficult to bank check without special equipment. Withal, you tin do some simple checks in your garage using a digital multimeter (DMM) tool.

Showtime, cheque the condition of the sensor's electrical connector and wires. Unplug the connector and check for rust or contamination, like oil, that is interfering with skillful electrical contact. Then check for wire impairment: broken wires, loose wires, and signs of burns caused by nearby hot surfaces. Too, make certain the sensor wires are not touching spark plug wires or ignition coils, which may interfere with the sensor's signal.
Subsequently these checks, use a digital multimeter that can exam either alternate current (Air conditioning) voltage or direct current (DC) voltage, depending on your detail type of camshaft position sensor. Yous'll as well need the correct electrical values for your particular type of sensor. You may find this information in your vehicle repair manual.
With some sensors, you lot may back-probe the wires through the sensor electrical connector.
If this isn't possible, see if you can unplug the sensor connector and attach a strand of copper wire to each terminal on the connector. And then plug the connector back in so that the two strands stick out through the connector'southward housing.
Another testing solution is to pierce through each wire using a pin, being conscientious not to brusk out the wires during your tests. If yous apply this final method, use electric tape to embrace the pin holes on the wires' insulation later on you lot're done with your tests to prevent corrosion from creeping into the wires.

Testing a Two-Wire Sensor:

If yous have a ii-wire, magnetic-type CMP sensor, set up your multimeter to "Ac volts."
Have an banana turn the ignition key on without starting the engine.
Check for the presence of power flowing through the excursion. Touch i of your probes to ground (whatsoever metal function on the engine) and the other probe to each one of the sensor wires. If neither wire has current, there'southward a failure in the sensor'due south circuit.
Have your banana crank or start the engine.
Touch one of your meter probes to either one of the sensor wires and the other probe to the other wire. Cheque your meter display and compare your reading to your transmission specifications. In nigh cases, you'll see a fluctuating bespeak between 0.three volts and 1 volt.
If there's no signal, you accept a bad CMP sensor.

Testing a Three-Wire Sensor:

Once you identify the ability, ground, and signal wires using your vehicle repair transmission, exam the sensor'southward excursion past setting your multimeter to "DC volts."
Accept an assistant turn the ignition fundamental on, but don't start the engine.
Touch the black probe on your meter to ground (a metal bracket, bolt, or metal surface on the engine itself) and the other probe to the ability wire. Compare your reading to the specification in your manual.
Have your assistant creepo or start the engine.
Touch the point wire with the carmine probe from your meter and the ground wire with the black probe. Compare your reading to the specification in your vehicle repair manual. If the voltage signal is lower than the specification, or no point comes out of the sensor, most probable the sensor is bad.
Remove the sensor and inspect information technology for signs of physical damage or contamination.

Check the video below to see how you can perform these tests using a test light and a multimeter. It'll requite you lot an idea of the nature of the tests too.

Seven. Video: Testing a Camshaft Position Sensor

Eight. What If My CMP Sensor Seems to Be Working Fine?

If it seems your CMP sensor is working correctly, consider these possibilities.

Fuel injectors not firing:

In many vehicle models, the car figurer uses the CMP sensor signal to burn down the fuel injectors.

If you've determined that your engine has spark but fuel injectors are not firing, there's a chance your CMP sensor has failed.

CMP Sensor internal circuit malfunction:

Information technology's not uncommon for a CMP sensor internal circuitry to develop an electrical open. This is ordinarily caused by the sensor being exposed to engine high operating temperatures.

Loftier temperatures can break a wire. The broken wire may withal make contact while the engine is cool. Every bit shortly as the engine compartment temperature increases, the damaged wire may aggrandize and split up, creating an intermittent failure.

Faulty timing chugalug or chain:

If your tests seem inconclusive, especially if the problem has triggered a CMP sensor related trouble code, you may desire to bank check your timing chugalug or chain.

Timing belts (not so much timing chains) volition stretch after miles of hard piece of work, and tensioners will wear out over time, upsetting spark timing.

This volition not but show the symptoms of a bad camshaft sensor but fifty-fifty trigger a CMP sensor related trouble lawmaking.

Some car manufacturers suggest replacing a timing chugalug and tensioner every v years for this reason.

If necessary, consult the vehicle repair manual for your detail vehicle make and model.

9. Sensor Replacement and Cost

If you've confirmed that the camshaft position sensor is bad, you may want to replace it yourself. On some vehicle models, replacing the sensor is just as like shooting fish in a barrel every bit unplugging the electrical connector, unscrewing the mounting bolt, pulling the sensor out, and installing a new 1. On other models you may need to remove 1 or more than components to gain access to the sensor (equally you will see in the next video).

Bank check your machine'south repair transmission for instructions on how to replace the sensor on your particular vehicle model.

Expect to spend anywhere between $30 and $100 (or more than) for the sensor itself, depending on your vehicle model. If you accept your vehicle to a car shop, y'all may be looking at $100 or more in labor expenses too.

The symptoms I discussed above are non articulate signs that your CMP sensor is bad. Still, if you recognize one or more than of these symptoms, try to diagnose the problem equally soon as possible. The last matter you want is to get stuck in the eye of the road. Start past getting the trouble codes from your computer retention, and, if necessary, testing the sensor with the help of your vehicle service manual. Sometimes you tin can decide the cause of the problem and set up it yourself without spending too much time and money.

Test Your Knowledge

For each question, choose the best answer. The answer key is below.

Which of these conditions may be caused by a bad camshaft position sensor?
- Missing during acceleration
- Coil failure
- Detonation
- Short spark plug life
- No spark
Which of these engine operating weather condition can damage the camshaft position sensor?
- Worn-out engine oil
- High temperature
- Overstretched timing belt
- Cylinder misfire
Which of these important devices could exist disabled by a bad CMP sensor?
- starter motor
- radiator fan
- fuel pump
- timing belt

Answer Key

No spark
Loftier temperature
fuel pump

This content is accurate and true to the best of the author's knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

Questions & Answers

Question: Tin can a faulty camshaft sensor crusade a knocking sound?

Answer: No, a faulty camshaft sensor tin can't cause a knocking sound unless it affects ignition timing.

Question: Tin can a faulty camshaft sensor cause a P0300 code?

Answer: A number of faulty components may trigger a P0300 code, including:

a bad camshaft position sensor

bad spark plugs or wires

problems with an exhaust valve

bad fuel injector

bad ignition scroll

bad oxygen sensor

blocked or inoperative EGR valve

Question: What is code P0340 on my Camshaft Position Sensor?

Answer: The lawmaking points to a fault in the camshaft position sensor circuit.

Question: Volition a bad camshaft position sensor cause a car non to crank over?

Answer: Usually it won't prevent current from reaching the starter, but it may 'disable' the ignition system - no spark.

Question: I plant metal shavings on ane of the camshaft position sensors. Does this hateful the motor is junk?

Answer: Information technology'southward 'normal' for camshaft and crankshafts to collect some filings. The magnets pick this upward. It's role of the normal wear and tear, although sometimes this indicate damaged metallic parts.

Question: I take a VW Passat 2015 Auto DSG. I take had iv different camshaft sensors changed in five months, and I still accept the same jolting issues. And now its coming up camshaft sensor once again. I have only had the wires changed from the sensor to the ECU and new pins, seeing if this would sort out the problem. But it has not. Even so have jolting. ECU not coming up with faults. Whatever ideas what might exist causing the camshaft sensor to go? The parts are from VW straight. So not unnamed brands.

Answer: Sometimes this happens with a bad crankshaft position sensor, even though the calculator may bespeak to a bad camshaft sensor. Have the crankshaft sensor tested before replacing it. Also, download trouble codes, there may be pending codes. Run into what they say, if whatsoever. And clean the ECU retentiveness with a scanner, if necessary.

Question: Can a faulty camshaft sensor cause engine to overheat?

Answer: No, but this mail might help:

https://hubpages.com/machine-repair/What-Causes-a-Car...

Question: What does information technology mean when my automobile has a borer racket & when the dispatch is pressed only runs swell?

Reply: If you're not getting any trouble codes, the trouble could be purely mechanical. Does the racket only happens when the motorcar is moving, revving the engine, while coasting? You might want to cheque this mail service:

https://axleaddict.com/auto-repair/Why-Does-My-Car...

Question: Where is the camshaft position on my '96 Hyundai Elantra?

Respond: This video may help:

https://www.youtube.com/watch?5=Fj8V-DwWfRU

Question: My auto has lost power and backfires afterwards I shift and surges while driving. What could the problem be?

Answer: It could be a timing effect, only make sure there are no problems in the valve railroad train. Are all the valves working fine? Meet if you can remove the valve comprehend and check the valves at idle and see if something doesn't expect right. Press the rocker arms with your thumb on each. Come across if something changes.

Question: Can a cam sensor problem cause a rich mixture and misfire on 1 cylinder bank? The machine is a 2005 KIA sedona 3.v v6 w/136,000 miles. The cam belt was replaced at 93k miles. Recent new plugs, wires, and coils. The only codes showing are random misfire P0300, P0301, 303, 305. The scanner shows negative short and long trims on the same bank as misfires.

Answer: It'south possible if the sensor is sending fake readings. Other possible faults include leaking fuel injectors and bad fuel force per unit area. And so make sure to test the cam sensor and fuel system pressure. This other post may assistance yous here as well:

https://axleaddict.com/machine-repair/How-to-Test-a-F...

Question: I have a 2009 Mini Cooper South that died on the road and will not showtime. Information technology has the code 2983 Intake Cam sensor and I have replaced it twice. I as well replaced the Vanos Solenoid and information technology nevertheless won't start. And the code keeps coming dorsum. Whatsoever ideas of what I should practise?

Answer: The problem could be in the connector or the wires in the harness. Cheque the connector for corrosion or buildup, and make sure the wires are non loose. Advisedly tug the wires and make sure they are tight and properly continued.

Question: When the camshaft is connected, the car doesn't showtime. And if starts, the engine works and so bad. When disconnected, the engine works good but the motorcar takes a longer time to outset. Can you aid me?

Answer: The problem tin be with the sensor itself or the wiring or connector. This video may help you test it:

https://www.youtube.com/sentry?5=pkwaqydbtas.

Question: Afterwards replacing the cam sensor, does the calculator memory need to be cleared before it volition start?

Answer: On some models, it'due south necessary to erase the trouble codes or it might feel the same problems or symptoms.

Question: Can a P2616 problem code on a Mercedes OM642 engine mean a replacement sensor is imminent?

Answer: The trouble could be in the circuit, the sensor itself or the tone ring. Have the sensor and circuit tested start before replacing any components.

Question: Can a faulty cam sensor crusade a catalytic converter to get blood-red hot?

Answer: If the faulty cam sensor has a bad consequence on ignition timing (at least in some models), it can lead to a misfire; enough raw fuel will cause the catalytic to get red hot.

Question: Would a bad camshaft sensor cause only one cylinder to misfire? The whorl plug and injector accept all been replaced on my 2004 Jeep Liberty three.seven.

Reply: The reckoner uses the camshaft sensor to notice cylinder power stroke, using its relative position to the crankshaft. If in that location's a problem with the bespeak plate, it's possible to have a misfire in one cylinder. Commonly, on these models, the ECM volition disable that particular cylinder to forbid raw fuel from going to the cat.

Question: When I start on a cold engine everything is fine, just after a minute the engine begins to cough, and there is a malfunction on the camshaft sensor. What could exist the issue?

Answer: Bank check the engine temperature sensor first, and and then test the camshaft before changing anything.

Question: Tin can a faulty camshaft sensor cause a difficult shift in an automated transmission?

Reply: Yep, a faulty camshaft position sensor can crusade difficult shifting or lock a gear in identify.

Question: What exercise I practice when my auto won't start due to a bad cam sensor?

Answer: Troubleshoot the sensor kickoff to make certain that'due south the problem - there could exist issues with the excursion too. You may need the vehicle repair transmission for this.

Question: If the sensor is bad, tin can the spark be functioning and the injectors not pulse?

Answer: camshaft references compression or exhaust stroke, simply a crankshaft position sensor is more likely to affect pulse.

Question: Can bad oil cause a cam sensor fail?

Answer: The more like sources of failure is the sensor itself, a trouble in the excursion or the PCM.

Question: I had the camshaft position sensor replaced for the beginning fourth dimension in March. The truck did OK until Baronial. And so it would cut off and hard start, code P0345. I replaced the same sensor in August. Now its November and showing the same symptoms. The automobile is a 05 Frontier. As well, the SLIP trouble light comes on simply goes out when the sensor is replaced. What can cause three sensors to neglect in 8 months?

Respond: For some reason, the computer is detecting that the Stability control arrangement is not operating. Simply the problem might really be in one of the principal systems, and this could be affecting the camshaft position sensor, possibly the sensor's excursion. Check the connector and related wires. There could be a problem.

Question: What would cause my car to quit while driving? It will only offset if you lot turn off the cardinal and so it starts.

Reply: There could be several causes, restricted fuel filter or problems in the fuel system (check for pressure), bad fuel pump, vacuum leak, or a bad sensor. Check for trouble codes, even if the engine calorie-free is not on. There could be a pending code.

Question: What would happen if simply one camshaft sensor does not work merely the other one works?

Answer: In some models, the engine may nonetheless work with i sensor without starting problem if the computer uses the crankshaft signal to figure camshaft position.

Question: Tin the camshaft sensors get out without the bank check engine light coming on?

Reply: Commonly, if the sensor starts wearing out, the computer may not turn on the cheque engine light, or if the fault is intermittent. Merely once the PCM detects a problem with the sensor or the circuit, the engine calorie-free will come up on.

Question: can a faulty Camsensor crusade the motorcar to not spark at all?

Answer: Yep, it's possible the ignition system can neglect.

Question: What will happen if I confuse the camshaft and crankshaft, thus accidentally trying to first the automobile with a camshaft sensor where the crankshaft sensor should be?

Answer: I've never done it myself, only both sensors mensurate speed and position of internal engine components. I would assume within the same awarding the physical configuration of each sensor is dissimilar to avoid mounting the sensor in the wrong place.

Question: What does P0335 code coming from my vehicle mean?

Respond: The P0335 code usually refers to a possible failure of the crankshaft position sensor or the circuit (harm connector or wries). But the fault tin as well exist with the reluctor ring or, less likely, the motorcar calculator.

Question: My automobile has a 345 code. What is that?

Answer: The code points to a problem with the camshaft position sensor - bank 2. A worn voltage reading. Audit the sensor for contamination, also the wires, or a bad sensor.

Question: What does code P0303 mean related to a camshaft position sensor?

Answer: The computer has detected a cylinder 3 misfire. This is normally a problem in the ignition system for that cylinder, or sometimes an intake leak affecting that cylinder.

Question: My 2011 Altima is letting out white smoke and is needing oil depending on how much miles I run information technology. At present, the figurer merely came up with the camshaft position sensor. Is that sensor whys it'due south doing that?

Answer: The CAM tells the computer the position of the camshaft, and works in sync with the crankshaft sensor, so the calculator knows when to fire an injector (depending on model) and to burn down spark. The white smoke is more related to coolant or oil leaks (blue fume) into the combustion bedchamber. So most likely there'due south a leak at the cylinder wall, rings, valve or head gasket. You may demand a compression exam and leak down test to diagnose the problem.

Question: Tin can a sensor human action this bad? I take a Nissan Sentra 2005, and after the car becomes hot; anywhere from 15 minutes to 3 hours, I have to creepo it at least twice before it starts. I have replaced the creepo sensor, but no modify. I replaced the cam sensor four times from different suppliers, and the car won't start hot or cold. So I put the original sensor dorsum in, and it starts. Yet I still have the same issue for that ii to iii hours when it'south hot

Reply: Some models will not function properly unless you use OEM. Get the DTCs and become from there. You may demand to check the excursion too.

Question: Tin a bad CMP cause engine light to come up on?

Respond: Yes. Either a circuit or sensor signal trouble can throw a P0340 – P0344 trouble code.

Question: What is a Code 0341?

Reply: This ordinarily points to the cam sensor excursion, merely it could also exist a sensor problem. A loose wire or bad connection (at the sensor or PCM), a bad sensor, or a sensor that has difficulty "reading" the reluctor bicycle is possible.

Question: Can a car's camshaft get out if you were striking?

Reply: If it was a hard hitting and it acquired the sprocket to misalign, it tin can probably affect the sensor.

Question: Tin a faulty camshaft sensor non show a code?

Answer: Usually a camshaft sensor intermittent failure can produce no code. But yous'll discover a alter in driveability operation at times.

Sometimes information technology'southward possible to detect the failure with a scan tool.

Question: I have lawmaking PO340 The engine starts and runs fine, "but has extended starter turn over. " Meaning the starter will seem to turn the engine over at least two cycles earlier it starts. What could be the trouble?

Answer: The trouble could be with the sensor itself or the excursion. The signal is not properly reaching the computer.

Question: My car gets spark and fuel, but withal, no get-go. Can a bad cam sensor crusade the no beginning? I ran a scan which read as a bad sensor.

Respond: On some models, a bad sensor tin forestall your auto from starting. Bank check the sensor. Consult your vehicle repair manual for your model for this.

Question: How long can I go with a bad camshaft sensor. It happened on 1/25/18. I tin simply become to 60 miles per 60 minutes normal speed and won't let me go farther than that?

Respond: That depends on your particular vehicle make and model. If the sensor actually has failed, y'all are doing more damage to the engine and you lot could end up with an expensive repair subsequently on. It'due south much cheaper to replace information technology.

Question: I have a P0320 mistake lawmaking, and I replaced both the camshaft and crankshaft sensors. What could be the problem?

Answer: The trouble is more probable to exist in the circuit, between one of the sensors and the reckoner (power or footing), a brusque. Check the connectors (possibly a poor connection) and wiring (loose, damaged or corroded). Less likely, a trouble with the calculator.

You may need a digital multimeter to check for an incoming reference signal for the sensor(s). This other mail can help you check the crank and camshaft sensors. Yous'll probably need the wiring diagram to identify the wires and the specs for your model. You can detect the diagram in the vehicle repair manual for your model.

https://hubpages.com/auto-repair/How-to-Test-a-Cra...

Question: Tin can a faulty camshaft sensor cause unexpected acceleration while the restriction is being applied?

Answer: Besides man mistake, unintended acceleration normally is acquired by a mechanical malfunction in the accelerator assembly (cheque if something is interfering with the linkage going to the throttle trunk) -- or from an electrical organisation malfunction in the prowl control system (sometimes a bad throttle position sensor) or the calculator. Haven't heard of a bad camshaft position sensor causing this, though.

Question: Is repeated failure and replacement of a sensor a symptom of another problem?

Answer: If the aforementioned sensor is failing, the problem could exist in the circuit. You may want to check the wiring diagram for your particular model. Utilize your vehicle repair manual. if you don't take the transmission, bank check the reference section of your local library. Possibly you lot tin use a test light or digital multimeter, depending on the circuit you lot are testing.

Question: Would a faulty cam sensor get worse over fourth dimension? What are the symptoms over six months?

Answer: On some models you may notice first problems staring the vehicle, then y'all'll detect problems while accelerating or at idle (hesitation, stumbling), until the sensor is gone.

Question: I installed a new benefactor v months ago and I had a miss immediately. I thought It was mayhap a bad plug. Now it either won't beginning for long periods and shuts off real ofttimes during idle and while driving. Now I hear information technology'due south probably a bad COS and it's located in the distributor equally unserviceable function. I don't know how to check it and costly to replace. Could the COS exist bad and what is your advice?

Answer: Yous may demand to check the ignition system to trace the error. Most likely the vehicle repair manual for your model volition tell you what tests you can exercise. If you don't have the manual, check the reference section of your local public library for it.

Question: Can a faulty camshaft sensor make my transmission stop working?

Reply: Information technology is possible in models where sensors share information for the transmission as well. Just check the sensor before replacing information technology.

Question: I just replaced the camshaft two months ago. Why is it bad once more?

Answer: Contamination from oil, moister or oil, vibration, can cause a camshaft sensor to neglect prematurely. Cheque the mounting area for signs of contamination and make sure the unit is properly secure. Likewise, check for wiring harm. This may likewise cause a bad effect on the sensor itself.

Question: Can a faulty camshaft position sensor cause smoke to come out of your frazzle?

Reply: It is possible for a bad cam sensor to crusade black smoke. Other possibilities are the MAF and MAP sensors and bad fuel injectors.

Question: Can a P0335 code exist caused by a bad timing concatenation?

Answer: It'south possible, just it's usually more likely to exist a fault with a crankshaft position sensor or circuit.

Question: Why does the meridian metal function of my sensor accept wear on it like something is scraping it?

Reply: Loftier temperature and vibration may take a "wearing" upshot on the sensor's fabric.

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