BUICK ENGINE RUNS ROUGH

Car Runs Smooth On The Highway But Idles Rough When Parked And Service Engine Light Comes On What Could Cause This?

When You Take Off After About 20 Miles An Hour The Car Will Jerk A Couple Of Times Then Seems To Run Smoothe As If Nothing Is Wrong. The...

Engine Performance Problem 1989 Buick Century 6 Cyl Automatic 90,000 Miles In Last 2 Days, After The Engine Warms It Starts To Run...

Car Runs Smoothly But Dies Abruptly When Idling Or Slowing Down To Stop.

Dtc Codes Refer To Egr, Pcv Intake Leaks. Cannot Find Egr Valve Or Typical Pcv Valves. Car Now Backfires With Black Exhaust And Stalls...