Question about 2000 Buick LeSabre
High idle setting jolts transmission when reveres selected.
Idle is set by the coolant temp. sensor. You could try to clean the throttle body plate with combustion chamber cleaner.
hope it helps
Posted on May 09, 2014
Those numbers appear to be in the normal range, possibly a bit high? Since adj are all computer controlled, I would suggest removing the air intake hose and inspecting the throttle body bore for "coking" of built up carbon, which is a common cause of idle maladies...
Posted on May 08, 2014
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Posted on Jan 02, 2017
had same problem i would check the Idel Air Valve and also check all of your vaccum hose lines makeing sure there are no cracks or splits in rubber connectors if there is repair immediatelt because over time they start to dammage the internal parts fo the engine and if youve replace tps mass air etc. sounds like a vaccum hose problem
Posted on Feb 10, 2009
change the auto choke temperature sensor ,its in the head somewhere ,but i have no experiance of this model to know exactly where it is ,not many of these here in spain
Posted on Dec 12, 2009
SOURCE: 1993 park avenue idles high
try redexe petrol additive.could be carbon buildup.when you take to the highway do not use heavy acceleration,but build up speed gradually..could also be sticky throttle cable.....
Posted on Feb 19, 2010
You need to get your engine coolant thermistor checked and tested. This is what tells the ECM when the engine temperature is at normal working temperature and turns the idle down.
But when the idle won't come down from cold to warm this is usually the main fault.
Hope this helps.
Posted on Jan 28, 2011
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