Cadillac Fleetwood Problem Report

Cadillac Fleetwood Performance Issues Due to Faulty ECM Grounds at Front of Engine

(6 reports)

The engine control module (ECM) electrical grounds on the front of the engine block may have high resistance causing a rough running engine or stalling condition.

Runs fine, the all of a sudden, begins to run rough, rough idle, stalls when stopped or in turns, check engine light comes on only when on highway, sevice soon light on sometimes. 2 different mechanics couldn't find problem. -
Related Items:
The EGR valve or control solenoid may fail causing the check engine (SES) light to illuminate.
The first time the engine stalled I was waiting to get gas. It started right back up,so I fille...
An engine vacuum leak may develop from the throttle body gasket causing a higher than normal id...
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases,...
An internal distributor fault could cause the Check Engine Light to illuminate, an engine misfi...