Questions & Answers for: misfire idle block

...even no start conditions scan tools only test the idle air control valve motor not the bore that extends to block varnish gets built up on the pintle and in the bore wich binds the in and out ...

...idle of engine thanks for all suggestions i had a 94 that ran into problems like that with very rough idles and misses. i get about five different codes from injectors to oxygen sensor. turned out my ...

...idle. Sounds similar to what I had. In my case, the problem was the coil block. Here is how I diagnosed my problem: First I pulled the codes from the car using a code reader: 2 codes were recorded ...

misfire at idle backfire under load check the plugs.replace them if you havent.wires should be ok too.coil pack must be in good shape.if all this is done then you must look at your throttle body.if ...

misfire I have no code.. Already replaced the coils, map sensor, idle control, spark plugs. Still randomly cuts off while at idle and idles rough sometimes.... Once again its very random, sometimes it

idle random cylinder misfire 99 jeep grand cherokee 4.7L V8: pulled a few codes one that said random cylinder misfire and the other codes said misfire on cylinder 1,2,3. I checked for vacuum leaks but

...idle pulled codes cylinder misfire misfire, 02 sensor (this ones been showing a while with no problems) so I changed plugs and wires seemed to be fixed as far as misfire code was gone ran fine for a ...

Idle rough misfire code p0303 code po303 refers to cylinder 3--misfire detected===causes --engine mechanical fault---wiring---ignition/ fuel system---injector---ECT/MAF sensor---ECM. check plug and HT

idle and misfire cylinder 2 code Hooked it up to a reader and it was giving me a misfire in cylinder 2 code. It idles really rough as well. I tested to see if it was a brake booster vacuum leak and it

...misfire ===causes --fuel /ignition--MAP sensor---IAC valve ( idle air control valve ) misfires are more from faulty injectors and low fuel pressure than from electronic problems unless you have been ...