03 2.0 spi rough idle, hesitation
Ok guys been looking through a lot if threads here which have helped a lot but problem persists. The motor is idling rough ( almost stalls). It also jerks little when u let off throttle going down the road. What I've replaced so far is: fuel filter, PCV valve n new line to TB. New egr valve, egr control solenoid n dpfe valve. Checked for vac leaks three times no leaks. Wiggled all wire connectors. Pulled n cleaned IAC even though it wasn't too bad. Check resistance on injectors all between 17- 17.5 ohms. This is an automatic and timing belt tensioner n water pump changed at 100k. Currently 108k. Not throwing a code. This one is driving me nuts. Any help surely would be appreciated. Thanks.ok since I posted this I've done the following: new iac new pcv and checked /tested maf sensor which tested good I.e good inputs and signal rises n falls with throttle. Also checked coil. No cracks anf resistance was good. Checked brake booster vac line. No cracks or leaks n check valve works fine. UPDATE: Car is at dealer. They found a problem with timing. Here after only 8k miles the spring in tensioner got weak n let the belt jump a tooth or two. I never gave timing a thought since belt etc was done recently.
Last edited by jd1971; 11-07-2013 at 06:37 PM.
Reason: more info added