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On most vehicles there is a screw located on the throttle body, it is the idle control. Sometimes it is cover and sometimes not but most times it is recessed. Tightening the screw will cause the idle to drop as it is cutting off the airflow through a secondary passage in the throttle body, loosening the screw will raise the idle allowing for more air to pass. Sometime in warmer or colder weather the airs density can be too high or low for the vehicle to idle properly and this screw must be altered.
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Why does your 1990 civic idle so low?
How low is low. If you have the Multiport Fuel injected engine it is normal for it to idle just at 500rpm give or take 50 prm. Anythign lower and you have a problem.
How do you set idle on a 1999 dodge intrepid 2.7?
Idle speed is computer controlled and is not adjustable. If the speed is incorrect you could have a sensor or actuator malfunction. Other causes include a vacuum leak.
Why does your idle drop when you turn your driving lights on?
Turning the lights on put a load on the alternator causing the idle speed to drop. I would have the battery and charging system tested to make sure everything is okay. The battery may be on its way out.
Why does your 78 firebird with a chev 350 drop from 1500rpm to 500rpm when you shift into gear can it be the ignition timing?
Unless that is an extremely radical 350 it shouldn't be idling at 1500 rpm in the first place. It should idle around 800 rpm and drop maybe a couple hundred when put in gear. If you are having to idle it at 1500 to keep it running you do have other problems. Could be timing, vacuum leaks, or a poorly adjusted carb. I'd start with those first.
How do you know if your iac valve is bad are there symptoms?
Your motor will idle badly. The revs will not stay at a constant level, even when your engine has reached operating temperature. ***Sum's Answer***- the engine will idle bad, and it wont catch its idle when droping RPM's. It may drop to 500rpm, shoot back up to 1k then slowly figure its way out to 6000-800rpm. Overall, it will idle badly, and not know where its going. It may not be your IAC motor though, I had that problem in my 03' Cavalier and it wasnt the IAC, it needed a computer update.
What causes the idle to be low rough and miss after replaced the timing belt on a 98 Honda 5 speed manual crv?
Computer needs to re-learn the idle. Spark plugs are bad. Valves are not properly gapped. Adjust Idle Speed on Throttle body.
What causes hunting on an x reg focus 1.8 petrol engine?
If you mean hunting at idle, the problem is caused by the idle speed being set too high or the idle switch is not properly adjusted. When the throttle is closed as indicated by the idle switch the fuel is cut off by the fuel cut solenoid until the engine speed drops below a preset speed. If the engine speed is higher than that speed and the idle switch is closed there is no fuel for the engine, thus the engine speed drops. When it drops below the preset speed the fuel is turned on and the engine speed goes back up.
Is it normal for the idle speed of a diesel engine to go up to 1100rpm when cold then drop to 800rpm after 5 mins?
NO that's bad
Where is the Idle speed control valve on a 1999 Mercedes?
Does not have one. Idle speed is controlled electronically through an idle speed control module.
How do you adjust idle speed on 2010 sebring?
Idle speed is PCM controlled and is not adjustable.Idle speed is PCM controlled and is not adjustable.
How do you set idle speed on a 300m chrysler?
Idle speed is computer controlled and is not adjustable.Idle speed is computer controlled and is not adjustable.
How do you adjust the idle speed on a 2001 Subaru Forester and what should the idle speed be?
how to adjust idle on 2001 legacy
