Engline light that Mass air sensor bad - replaced - cam position sensor bad - replaced. Around the air sensor there is engine oil.......must be coming from the engine. How do I find the problem and what is the cure. Any help would be greatly appreciated. If possilbe cc reply to firstname.lastname@example.org Thanks.
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Could be a few things. But here are the obvious. Check for a vacuum leak around the intake. When you put the car into drive it starts putting strain on the engine, a vacuum leak will give it too much oxygen and cause a fuel mixture issue / reading.
If nothing wrong there, you may have a bad throttle position sensor. When you put the car into drive and it starts putting strain on the engine it will pull the idle down then the sensor will adjust it automatically. Hope this helps.
This problem is caused by a MAF sensor or even a clogged file pressure rail check both and if those aren't your problems then it could be bad diesel or your idle control is bad check all of the above and replace all if possible
Remove the mass air flow,and clean it with intake cleaner spray,or mass air flow cleaner spray,if this does not help,reset the system again,by removing the negative battery cable for at least 20 seconds,then put it back on,if this does not help,replace the mass air flow sensor
my sister had the same problem. There are 2 sensors that can cause this when they go bad. One is the oil pressure switch, which is located near the oil filter. When the PCM reads this switch, and gets a low reading, it will automatically kill the engine. The switch costs around $4.00 and is a 5 minute replacement job. The other possibility is that the crank position sensor has gone bad. When this sensor goes bad, the PCM can't read the appropriate speeds of the crankshaft, and will adjust the fuel and air mixture to compensate, often times the engine will die because it is getting insufficient fuel and air. The Crank position sensor is located on the engine block near the water pump. It is around $40.00 and at the most a 30 minute replacement job if you are unfamiliar with the process. I hope this helps. I'm a vehicle mechanic in the Air Force, with roughly 7 years of experience on the floor.
this may the problem which you told before but this may only one of the cause.
2.due to the broken clamp the filter element might have moved from its position. so there may be a blockage in the line due to this the amount of air going for the combustin may be reduced which tmakes your car to stall. please relace the clamp and it wil be oki.
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Code PO1309 : Misfire Monitor Failure
Description : When the misfire monitor is disabled,usually due to the input signal generated by the camshaft position sensor, by sensing the passage of teeth from the camshaft position wheel.
Possible Causes : PCM(power train control module), Mass Air Flow Sensor, Engine Coolant Temperature Sensor, Crank Shaft Position Sensor, Camshaft Position Sensor.
check aux air control valve , thats what controls the idle it may be bad,also with that kind of mileage i would replace the mass air flow sensor ,do that first, good luck , the mass air flow sensor has alot to do with your gas mileage .
It might but what exactly are the codes. Before you change the Mass air flow sensor, try cleaning it first with a can of mass flow cleaner.
If your running a oil K&N filter, there could be some oil residue on the sensor. Start with that and change the filter or clean it if it's a K&N.
The O2 sensor's could be bad also, you really need the code's to be sure what sensor is giving you the faulty signal.
Good luck and hope this helps.
The service engine light DOES NOT mean change your oil. The change oil or maintence required light means change oil. The service engine light is the same as a check engine light and means that there is something (not always really bad) is going on with your motor and need someone that has a code reader to let you know what the code is. Yes that code is a camshaft position sensor code. It is located on the passenger side of the engine in the "valley" between the two cyclinder heads. Its not too hard as long as you have some tools and some skills. Its easiest to remove the serpentine belt and remove the bolts for the power steering pump. That way you can move the pump a little to gain better access to remove the cam sensor. Just replaced one yesterday on a 99 century. Hope that helps!