At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
There are a number of different problems that can cause rough idle. These are a few. Test fuel pressure, check timing,
Will dropping into neutral save it from dieing? torque converter may be going bad.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
4.9 clean throlle body / tps adjustment and or replace / minuim idle air adjustment and idle control motor adjustment and or replace
4.6 clean throlle body /adjust idle control motor and or replace
Remove, clean and inspect the idle control valve on the throttle body. These tend to clog up over time, or the stepper motor fails. Check this before anything else.
check for vacuum leaks. You can do this with a can of carb spray but please be careful as it is flammable! if the ignition wires are leaking and you hit them with carb spray you will start the engine on fire!
The safer alternative is to have the engine "smoked" for vacuum leaks. This is done with a smoker. Any place that is leaking you will see smoke.
A trained ear will also be able to hear a leak.
If no leaks are found try unplugging the MAF sensor. Is is in the air tube next to the air filter box. If performance improves try cleaning it with some MAF sensor cleaner. If that doesn't work than you may need to replace it.
Its the IAC i had the same issue, with my 2002 xl-7 with 159,000 miles on it, i had it clean and it causing me no more problems. the part itself to replace is 200 bucks at Autozone and my mechanic will do it for 100 bucks in labor. Good Luck
×