1996 Pontiac Bonneville

Tiny
BIGJOETWO2
  • 1996 PONTIAC BONNEVILLE

Engine Mechanical problem
1996 Pontiac Bonneville 6 cyl Two Wheel Drive Automatic 113232 miles

1996 bonneville will not start has gas fire on plugs. Long term fulel -5.5% ignition timing adv -7.0 po300 code

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Wednesday, September 17th, 2008 AT 7:25 PM

3 Replies

Tiny
JACK42
  • MEMBER

Does it have injector pulse? I have seen some of those Pontiacs with the 3.8 rot out the upper intake manifold around the EGR and fill the intake with coolant causing no-start conditions and random misfires, is coolant mysteriously diappearing?

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Wednesday, September 17th, 2008 AT 7:56 PM
Tiny
BIGJOETWO2
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Yes but not in the oil put on new water pump

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Friday, September 19th, 2008 AT 5:59 PM
Tiny
JACK42
  • MEMBER

The leak I am refering to doesnt put coolant into the oil, it goes into thec ylinders and wets the plugs causing misfires and no-starts. Have you checkced for fuel pressure? GM pumps are great for only lasting about 100k

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Saturday, September 20th, 2008 AT 7:30 AM

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