94 Legend Intermittent Rough Idle - Shake
#1
This has happened about six times within the last three months, all of a sudden my car starts to idle really rough, actually starts to shake, this is when the car is at a complete stop. Normally the car runs great, no knocking, very smooth. Do the IAC valves get clogged on these cars? They control the idle. I can not pin poiint the problem , no check engine light... nothing. 98% of the time the car runs like a champ.
#2
hey i had the same problem , i suggest fuel injector cleaner , and highly recomend using 89 octane all the time , that helped me. when this happened to me i had my lights and ac on , so i figured it was a fireing problem . i also bought a k&n airfilter and this seemed to help too. worse come to worse id just pull the handbrake and put it in neutral and feather the engine a little . if a slight force on the pedal seems to help you could just raise the idle speed a little . I hope this helps you as much as it helped me.
#3
My engine revs once in a while with my 94, also. I'll try your advice. I only use the highest grade gas, and it didn't seem to matter if I had just had a tune up or major engine work done. This usually occurs after starting the car with mine, though. I forgot to add that it only does it while in park. Not while sitting at lights, etc.
#5
hmmm how long has it been sence a tune up?
did the tune up include new oxygen sensors?
next time your in park and it starts acting up, try different things
like turning on your A/C, turning your wheels hard loading the
electrical system(lights,windows,etc...)
If it causes the symtom to stop then yes focus on having the idle air
controll circuit cleaned/replaced. if not them hmmm back to the basics
then.
tune up.
hose checking.
batt cables checked
chassis grounds checked.
but if your stuck in a parking lot with a crank no start situation (
kinda like vapor lock) then have that main buss relay replaced.
did the tune up include new oxygen sensors?
next time your in park and it starts acting up, try different things
like turning on your A/C, turning your wheels hard loading the
electrical system(lights,windows,etc...)
If it causes the symtom to stop then yes focus on having the idle air
controll circuit cleaned/replaced. if not them hmmm back to the basics
then.
tune up.
hose checking.
batt cables checked
chassis grounds checked.
but if your stuck in a parking lot with a crank no start situation (
kinda like vapor lock) then have that main buss relay replaced.
Thread
Thread Starter
Forum
Replies
Last Post