Questions & Answers for: idle revs down

idle problem: motor revs up and down at idle idle problem: motor revs up and down at idle it sounds like your idle control valve needs cleaning or replacing

...revs you need to clean or replace your idle air control valve(IAC). The IAC allows your engine to idle smoothly by opening and closing a valve that allows air flow to the engine that is monitored by ...

...revs are still above idle, it will rev a second time if you let the revs drop to just above idle, I've cleaned the carb, petrol tank and petrol tap, cleaned the air filter, the power valves are free ...

...idle the engine revs up and down by its self my 1990 toyota starlet idles fine its when i put my foot on the throttle it revs up then drops down by itself even when my foot is to the floor ...

revs up and down in park after starting. Sometimes after driving put into park and it will idle fine.. Sometimes it will rev up n down ..is this a vacume leak? Sounds like vacume leak or *idle stepper

revs comes down slowly and missing just above 1000 rev and then falls to normal rev.what could be wrong? missing when idling If the engine has a constant miss the computer should record a trouble code

...idle when you first start the car it idles high and low and sometimes shuts off but once it warms up its ok and runs great what can this be? it revs up and down and will shut off till it warms up it ...

revs go up down idle If you have an aftermarket exhaust fitted this could be normal, It depends on the range of the change in revs. 50 or 100 revs up or down at idle is no big deal.

...it idles it revs to 2000 rpms and revs up and down and when driving in OD at 55 to 60 it revs up and down about 200 rpms Looks like idle stepper motor issue - try to clean it first before

...revs weer n bietjie af of as ek die rem trap rev jy baie hoog check die idle beheerklep it foutiewe kan wees check the idle control valve .it could be faulty google translate I have a spark in 2013 ...