Question about 1991 Buick Park Avenue
No spark to the spark plugs. car is fueled and the fuel pumb is working. engine started to run rough at low speeds, but with high rpms would run smooth pulled off on an off ramp stopped and the engine stopped and refuses to start. engine spark plugs in good condition. wiring appears to be good condition
The 3.8 engine has an electronic control module under the coil pack that commonly fails.
The harness connecting to that unit is also often the culprit of many ignition problems ... its wiring harness fills with water or other corrosives and rots away. So be nice when removing it from the coil/ignition module... There are numbers visible w/o removing it you will need when searching for one to replace it... 1668994 or something like that... you may want to check prices for a used ignition module/coil pack at car-part.com or mypartshop.com... and try a used one to start...
Posted on Nov 16, 2008
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Posted on Jan 02, 2017
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