What Causes Frequent Stalling at Low Speeds in the Buick LaCrosse?
1 Answers
LaCrosse engine stalling at low speeds may be caused by excessive internal engine wear, cylinder pressure issues, excessive carbon buildup, improper maintenance, etc., leading to stalling. Damage to internal or external engine components can also cause stalling. Overheating coolant temperature, malfunctioning or abnormally operating radiator cooling fans may result in stalling. Issues in the chassis system such as locked brakes, tire leaks, or seized bearings can also lead to stalling. Here are the related explanations: 1. Intermittent Idle Stalling: If the engine occasionally stalls at idle but operates normally after restarting, this is called intermittent idle stalling. This type of fault is very difficult to diagnose and can be caused by numerous factors. 2. Causes: Common causes of intermittent idle stalling include: sticking idle air control valve; worn insulation on idle control valve wiring; clogged idle air passages; faulty throttle position sensor; issues with camshaft or crankshaft position sensors; dirty or malfunctioning engine speed sensor; or problems with the idle control program in the engine control unit (ECU).