95 Olds Cutlass Supreme bucking during acceleration

1995 OLDSMOBILE

TWRAUCH

MEMBER
1 POST

[b:6924c4ae35]95 Oldsmobile Cutlass Supreme 3.1L Sedan, 135K miles[/b:6924c4ae35]. Car hesitates, bucks, and surges at about 30 mph when accelerating from a stop, especially with A/C on until you get up to cruising speed, and then it seems fine. Very annoying at stop lights/signs. It hesitates and surges unless you rev it and really give it the gas. Changed fuel filter, air filter, plugs, and wires - still surge and bucks. Went on a fairly long trip (2000 miles round trip), and my highway fuel economy has dropped from about 29mpg to about 25mpg.

Aug 14, 2006 at 3:06 PM

MIKEYBDMAN

✓ASE Certified Mechanic
623 POSTS

[quote:811064b388="twrauch"][b:811064b388]95 Oldsmobile Cutlass Supreme 3.1L Sedan, 135K miles[/b:811064b388]. Car hesitates, bucks, and surges at about 30 mph when accelerating from a stop, especially with A/C on until you get up to cruising speed, and then it seems fine. Very annoying at stop lights/signs. It hesitates and surges unless you rev it and really give it the gas. Changed fuel filter, air filter, plugs, and wires - still surge and bucks. Went on a fairly long trip (2000 miles round trip), and my highway fuel economy has dropped from about 29mpg to about 25mpg.[/quote:811064b388]

No engine codes? Sounds like something is having the computer run it rich. I would have the fuel pressure system checked. Maybe you have a faulty pressure regulator.

Aug 14, 2006 at 4:18 PM

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