1990 Buick LeSabre Q&A
1990 Buick LeSabre Question: car will not idle
car will not idle - Visitor
There are way too many possibilities that could cause this problem and so difficult just to guess without being able to drive your car and experience the problem first hand and or do some basic diagnostic tests. The engine may stall due to a problem in the idle control circuit (modern cars have a motor controlled by the computer to stabilize and control the idle). Vacuum leaks, break down of the ignition or fuel supply to the engine can also cause the engine not ot idle.Your car has On Board Diagnostics Level 2 (OBD2) many scan tools are capable of reading live data from the many sensors on your engine and transmission by simply plugging in a scan tool (hand held computer) to a diagnostic port under the dash board of your car, this scan tool reads an amazing amount of information which is live sensor data without having to intrusively test each sensor individually (convenient and time saving) The tool is only as good as the person interpreting the data and not every scan tool has the full capability to work on every particular manufacturer of car. - patrick mannion
it stays at a high idle until I kill it and restart it. Then it's back to normal until the fans kick back on.
I have V6, 3800 that will not idle under 1800 to 2000 rpms. changed idle control valve,checked for any vacum leaks, including intake manfold, nothing. Removed and reconnected power.
I have a 3800 v6 we have done a compression test all cylinders are at 150 psi. cooling system pressure check holds 18lb. no oil in coolent or coolent in oil. engine runs smooth, and starts easy. Ru...