1998 Buick Century rough running engine

1998 BUICK CENTURY
60,000 MILES • 6 CYL • FWD • AUTOMATIC
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JIMRENNAK
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  • 1 POST
I have a 1998 Buick Century with 3.1l V6 engine. When driving in the highest gear and need to accelerate - the engine runs rough. When then downshifted, the engine runs fine. It runs fine when acellerating from a stop or in any gear other than the top gear. It runs rough under even a mild acceleration - not full throttle - in top gear. It runs just a little rough at idle. There are no engine codes.
Dec 18, 2007 at 3:49 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Any codes? MIL on? If not, pressure test the fuel pump. Might be starved for fuel at wide open throttle.
Dec 18, 2007 at 4:16 PM
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