How many sensors in engine compartment does the 2002 lmz trailblazzer have that can cause the check engine light to come on?
NO, but it will cause bad engine performance Read More
Bad bearing or rod Read More
Yes it will. Read More
Every sensor on the engine and transmission can cause the light to come on. Read More
Look to the ECU/sensors or airflow. Check the O2 sensors, air filter, etc. Read More
Yes, just about any sensor on the engine could cause a no start. Read More
it could of been a short in the wiring in the engine compartment or you had a fuel leak and it got into wires or the ignition system Read More
Why is a 2002 Mazda mpv check engine lite coming on when all 4 sensors have been replaced car and the car seems to be running fine?
the check engine light could stay on because of other sensors. for example,the power steering sensor could be bad...this will cause the engine light to come on and other sensors could cause the engine light to come on. just get rid of the van. most sensors when they go bad cost anywhere from $200-$600 just because of the location of the sensor. manufacture put sensors in hard to reach places to keep you from replacing… Read More
Just about all of the engine sensors could cause it to not run. Read More
No, it will cause a check engine light along with fuel economy and power issues. Read More
Oxygen Sensor. Or the Knock Sensor. Or you could check the plugs for faults. Read More
no it can't. usually when the oxygen sensors are failing, u get your check engine light on. Read More
Yes, it can affect the oxygen sensors and catalytic converter. Yes, it can affect the oxygen sensors and catalytic converter. Read More
Would sprayin wd40 in the doorlatches of a Ford Windstar effect the sensors and cause the check engine light to come on?
no, door locks have nothing to do with check engine light. Read More
Anything that can change the emissions of the vehicle. Engine sensors, EGR, gas cap, transmission, etc. Read More
Will an after market cold air intake cause the check engine light to come on in a 96 Tahoe--If so how would I stop this from happening?
No, this will not cause the MIL light to come on, unless you removed one of the sensors such as the MAP sensor. You must have all sensors in place. There is no workaround. Read More
"They" do not cause any engine operation they are only a sensor. If they are faulty they will give a false signal to the main ECU. The engine will still operate safely until they are repaired. Read More
yes can cause poor exhaust flow and cause car to set codes for cat. converter, o2 sensors ,or fuel trim Read More
if it was like my 99, then a belt was worn out, and will cause a chirping noise, if it is in the engine compartment, it is very likely to be a belt Read More
Yes, a crank sensor is one of the major sensors used to control engine timing and cylinder firing. Read More
What sensors can be disconnected and not cause a check engine light I have high Idle and just read about the power steering sensor?
On almost all cars any sensor unplugged can turn on the check engine light. Read More
It could be a loose radiator grill, license plate holder or similar. It could be a loose cap in the engine compartment or even a problem with the engine. Read More
I have had a lot of issues with a 1995 Mazda millinia S. The problems I have been having has been O2 sensors, and engine coolant sensors which cause the engine to misfire. If you have a code reader it will show that the problem is a misfire issue. Mine only has the problem after the engine has been at operating temperature and then the problems strike. It is a cheap fix but it worked… Read More
yes if the leak is before oxygen sensors or catalic convertor. you can bring your vehical to any parts store to have the check engine light checked Read More
The engine power reduced light will turn on in Chevrolet HHR when a failure is detected in one of the sensors or engine components. An OBD II code reader can determine the cause and help with making repairs. Read More
Oxygen sensors are located at the same place on all cars cause they all do the same thing: analyze your exhaust gas. It will be on the exhaust pipe, between the engine and the catalytic converter. thats good but there are 3 of them Read More
What could cause a 1999 Toyota Camry check engine light to come on after replacing all the sensors and driving it for about forty miles?
what sensors have you replaced?? i am assuming the oxygen sensors. i need a code number to tell you what is wrong. if its a p0420 its probabily the catalytic converter. mabye a p0141-mass air flow needs to be cleaned Read More
Though there are several possibilities, by far the most common reason for that is a loose or glazed belt in the engine compartment. Read More
Your oil cap was left loose and now you have a lot of oil in the engine compartment so would this cause the exhaust odor in your car from your heater when standing still?
Yes, just had exactly the same problem, I tightened oil cap correctly and cleaned the oil thst has splattered around the engine compartment and it has solved the odour of oil / fumes. Read More
On a 1985 928 the engine has quit on several occasions while driving for no reason at all nobody has been able to determine the cause Has anyone had a similar problem How was it solved?
if this engine has computers, you need to check the cam positioning sensors Read More
A throttle position sensor might keep the engine from starting. Any number of things can cause a vehicle not to start. The starter and the gas line sensors are also a possible culprit. Read More
Its a long shot but... If you have a leak in the exhaust before the oxygen sensors, the sensors will think the engine is running lean. The computer will compensate (from incorrect input data) by increasing fuel delivery, causing the air/fuel mixture to go rich. If the engine runs super rich the exhaust will be black, and very noticable when you accelerate. Read More
check for tune-up, check maf sensor, check o2 sensors, do a fuel system service. Read More
Usually caused by faulty sensors in exhaust system. Could also mean Catalytic converter is plugged/faulty/emissions problem with vehicle Read More
A blown fuse will cause the 1995 Ford Taurus headlight to stop working. The fuse box can be found in the engine compartment. Read More
Yes. There are sensors in front of and behind the catalytic convertor that relay information to the engine computer which in turn adjusts fuel flow, timing adjustments and airflow. If there is a problem the computer cannot correct for it will cause the engine warning system to engage. Read More
Some of the factors that caused the "check engine" light are: defective oxygen sensors defective air mass meter emmission systems Hope this will help Read More
Clean the mass air inflow sensor. You may also have some engine sensors that are borderline working and won't cause a check engine code but are feeding the engine control computer the skewed readings. If you have a check engine light on- go repair that problem. LOL Read More
What happens if the oil dipstick compartment comes out of the engine when checking the engine oil in an 84 cutlass supreme?
If the place where the dipstick for the oil is comes out of the engine it will cause an oil leak. The engine might not be able to build up enough pressure to keep running either on the 1984 Cutlass Supreme. It should be replaced. Read More
Yes, it is possible. If you have checked all fuses in the dash and they are ok, try looking for a fuse panel under the hood in the engine compartment. There's been known to be ignition fuses in those panels in the engine compartment (if it is equipped with the engine compartment fuse panel). Otherwise, check starter relay, ignition wires near starter relay, ground wires, or even the ignition cylinder (where the ignition key goes)… Read More
Dirty air filter. Sensors going bad but not enought to set a code. Low idle speed adjustment on carb. Engine control computer needs a relearn session after battery or connection failure. Read More
Many of the engines sensors do not operate until the engine has reached running temperature (195 degrees F). Without the thermostat the engine won't reach that mark. It may also trigger the check engine light to illuminate. Read More
It would be easier in this case to list the things that would NOT cause this problem; Seats, interior, glass, and the radio. Things that could cause this problem Begin at the Battery and end at the tailpipe. If the engine does not crank (turn over) battery, starter, ignition switch (and all wiring in-between) If the engine cranks but does not start: *all wiring, connectors, fuses, sensors *Fuel Pump, fuel delivery system *Spark system (sensors… Read More
There are several causes for the engine light to come on. The most common problem is the oxygen sensors. If you decide to replace the oxgen sensors, make sure you disconnect the negative battery cable before you replace them. Otherwise, the engine light will still come on. Another cause can be the mass airflow sensor. The best thing to do to be 100% sure is to have the dealer diagnose it. Good Luck! Read More
The engine management light comes on when the on board systems pick up a fault in the engine. Modern engines are littered with sensors and the most likely cause is that one of these sensors has failed thus resulting in your light being on. You will probably need to take it to your local garage and get them to put it on diagnostics. This will hopefully pick up on the fault and identify it to… Read More
No. It is not legal. The check engine light will turn on. The computer will try to correct for improper sensor readings and that will cause fuel economy and performance issues. Read More
What would cause a humming or howling noise coming from the engine compartment of a 1989 Pontiac Bonneville on hard acceleration?
sounds like a motor mount is broken or a transmition mount. have those checked. Read More
possibly the crank angle or cam sensors Or injectors Read More
95 Villager runs terrible and sputters-backfires when cold is there in fact a second oxygen sensor or what else could cause these symptoms?
Oxygen sensors generally do not operate when "cold". Engine is in open loop mode while warming up. In additionl, oxygen sensors generally do not cause this kind of problem. I've read elsewhere that there is a sensor in the distributor that can get dirty and cause the symptoms you're experiencing. Sorry, don't have any links handy. Read More
Engine temperature rising when the engine is idling is normal. The car is sitting still and no air is entering the engine compartment. This will cause the engine temperature to rise. The cooling fans then come on and the engine returns to a normal temperature. Unless the cooling fans do not bring the temperature down, you have no problems and this is totally normal. Read More