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99 Chevy silverado 4.8l it idles fine until you drive it then it idles up to 15-1700 rpm and wont stop till you shut it down then when i start it again it idles normally until i drive again why?
Probably a bad idle air control valve.
Why would a 1999 Ford Contour shake or vibrate at idle?
I also wish someone would answer this question as my 1997 Ford contour does the same thing. It shakes and vibrates very bad when it idles and it idles really low. They set the idle up to make it so it wouldn't die so now when I start it it revs up really bad then it idles down then it idles down to low and shakes I also wish someone would answer this question as my 1997 Ford contour does the same thing. It shakes and vibrates very bad when it idles and it idles really low. They set the idle up to make it so it wouldn't die so now when I start it it revs up really bad then it idles down then it idles down to low and shakes
Your 87 Nissan truck idles up and down?
check for vaccum leaks.
2002 ford pick up idles fast when first stated then idles low runs good going down the road but when you stop it idles low and rough?
It could be a dirty air filter or a dirty throttle body.
98 Chevy Metro idles up down worst when turn headlights on?
When you turn on the headlights of any car it causes a load (or horsepower drag) on the engine. Your car has an idle problem and the load on the alternator simply exacerbates it.
Lawn motor idles up and down?
Either the fuel mix is adjusted wrong or the carb is dirty
Chevy s 10?
OK, you have a Chevy S10. What is your question? my truck dyes out when i give it gas, i changed fuel filter and transmission oil and filter.it idles fine,and starts right up.
1993 buik Le Sabre idles up and down?
Listen and look for a vacuum leak. Could be anywhere.
The car starts fine but idles up and down then stops running?
Check the air filter, it's probably clogged.
Your dodge Dakota idles up and down and some times hesitates?
I changed my tps sensor on my 2001 Dakota and it solved this problem.
When sitting with vehicle in gear it idles up and down and temperature gage goes up what is the problem just recently had a tune up and fuel system cleaned?
take it to a mechanic for a diagnostic
If a vehicle idles up and down and the lights dim with the idle and when it is in gear the battery light comes on would that be an alternator problem?
Alternator needs replacing.
