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Hot idle compensator - 1980 Toyota Tercel

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Y does my 97 honda accord exsalorat when park


most engines idle in park at around 900 rpm this drops slightly when a gear is selected as the motor comes under load. The idle speed sensor should compensate for this the same as it should compensate for when the load is removed . Check for fault code in idle speed sensor area

Jan 29, 2013 | 1997 Honda Accord

1 Answer

My 99 buick lesabre runs hot when the a/c is on and i'm sitting idle, what is the problem


thermostat may be at fault or engine doesn't lift idle to compensate for extra load of A/C

May 31, 2012 | 1999 Buick LeSabre

1 Answer

I cleaned out my choke with correct spray and now just replaced my idle air control sensor but the car is still


You are equipt with a idle speed control motor.There is no way cleaning is going to clear it,When the RPM jumps it is either working and trying to compensate for a vacuum leak.Have the vehicle running as it jumps up and down feel the EGR is it hot to touch? Becuase that can cause the jumping RPM,Check the PCV valve with the car running plug it does the RPM stabalize? If it does replace PCV. You are searching for a vacuum leak

Mar 10, 2012 | Cars & Trucks

1 Answer

1989 Cadillac Sedan De Ville engine stalls when air is turned on...tries to take off when stopped at stoplight..sometimes dies while driving..


It sounds like the idle compensation circuit for the engine is dirty or faulty. Have your car checked at a shop. have them check the idle air motor for dirt or malfunction. It could be that it only needs to be cleaned or replaced.

The compensation circuit adjusts the idle/slow speed of the engine. The air conditioner puts a load on the engine and this circuit adjusts the engine speed to compensate. Also, when the car is cold this circuit adjusts the idle speed to prevent stalling and help the engine warm up faster. I hope this information helps you.

Aug 16, 2010 | 1989 Cadillac Sedan DeVille

1 Answer

Idle fluxuates at warm up..has no power and feels like it will stall ...to compensate for the low idle..the idle will rise too 2grand and then blow out smoke from the tailpipe...


just to be cautious, after warm up, check your exhaust system for any components that are red hot. if so, that is your catalytic converter and will need to be replaced. it sounds like you have a mass air flow sensor issue. have the vehicle scanned for codes and let me know what they find. cheers

Jan 21, 2010 | 1999 Audi A4

1 Answer

When started idels high about 2000 rpm then drops when hot cold ?


the iac probably has carbon built up around it this controls the idle speed try cleaning it first,if not it could be a bad iac or a vaccum leak that the iac takes some time to compensate for to control idle.

Sep 17, 2009 | 2002 Jeep Wrangler

1 Answer

C240 wagon (4-matic) idles low almost cutting out at stops


Hi,is never a bad thing to add a good fuel injector cleaner to your gas tank to prevent injectors from getting cloged ,you can try this for two days ,if no diference , check your air conditioner idle compensator,this regulates the idle when you turn the air on and off. good luck

Aug 18, 2008 | Mercedes-Benz C230 Cars & Trucks

2 Answers

Idle speed


This is because the computer compensates idle for when the A/C compressor is on or off. When the A/C compressor kicks in the computer will increase the engine idle to compensate for the drag in from the compressor. When the A/C is off it will decrease the idle to try and maintain a steady idle. If it is causing a high surge when the brakes are on it may be the IAC valve. If it is just slight it shouldnt be anything to worry about.

- Tech101

Jun 17, 2008 | 1994 Toyota Pickup

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