I have a 89Pontiac Bonneville 3800 76,400 miles started sputtering until get to 50mph then jerks what could be going on

Asked by Dec 14, 2015 at 07:13 PM about the 1989 Pontiac Bonneville LE

Question type: Maintenance & Repair

4 Answers


Check fuel pressure, it should be 37 to 43 lbs.

2 out of 2 people think this is helpful.

Another thing on those is the intake gaskets are known to leak. Is there lean condition code?

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Actually the '97 and forward are the ones with the intake gasket issues.A lean condition would be trouble code 44. Sounds like a fuel pressure regulator problem. HTH. -Jim

1 out of 1 people think this is helpful.

Oh, thanks there Js...

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