Hey there I am working on my mother-in-laws 92 Acura Vigor and I am stumped. When sitting at idle the car seems to miss every once and a while sometimes more often the not. The idle drops then it picks back up again. However when in gear ( it is an Automatic) the idle drops too far and the engine light comes on putting the car into safe mode I think because it wont go higher then 2800 rpm. I thought maybe it was a fuel fikter or injector problem but after running injector cleaner and replaceing the filter it is still doing it. Is there any way to check the computer for the sensor codes?
Edit: I thought I would add that even when the car is in gear the motor misses but the light wont come on until you try to give it fuel then the idle drops to about 500-600 rpm followed by the check engine light .
A 92 would be OBD I; and I dont believe there is a way to pull the codes without a scan tool. Could be anything from a crankshaft sensor to just needing a tune up from the way it sounds. Ive seen them do that with bad throttle position sensors too. See if you can get a trouble code out of it.
I found some info online. there is a two wire plug under the dash on the passenger side that when jumped it will give you the error codes I got four flashes which means (acording to the web site) Crankshaft position sensor. So I am starting to think that the timming belt jumped a tooth. I am not sure how hard it would be to fix because I have never worked on one of these inline 5's
Yea I am going to start with the sensor then move to other things. I also found out that they have Timeing chains and not belts so it didn't jump a tooth. Also if the timing was out I think it would be constantly miss firing not sporatically.