2004 Buick Lesabre engine missfire/stalling

2004 BUICK LESABRE
220,555 MILES • 3.8L • 6 CYL • FWD • AUTOMATIC
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JAMES FARLEY
  • MEMBER
  • 1 POST
engine has quit a few times from overheating. it would start up after it cooled the last time it quit while driving in rain and had to be towed . it now starts but runs rough ,miss fires, stalls and backfires when throttle is applied. I changed out tps per computer diagnostic check==no change. what do I check now.? Fuel in full and fuel pressure seams ok
Sep 29, 2015 at 7:52 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
Probably time to have it tested for a blown head gasket or you could just save your money and look for another car. You just abused that one into the grave.

It only takes one good overheat to destroy the engine but you did it multiple times.
Sep 29, 2015 at 9:28 AM
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