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1998 Pontiac bonneville ssei

Jraymsith
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Jraymsith Newbie

Jraymsith

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Hi guys I have a 1998 pontiac bonneville ssei. the problem i am have is the RPM meter is reading worng and the check engine light is showing a miss fire. so i replace spark plugs and wires and coils and the ignition control. I have no clue what is going on please help!

 

Ps. im having problems finding after market performance parts for my bonneville 

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Frosty Grand Master

Frosty

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What is the trouble code you are getting with the check engine light?

As for the tachometer being off, I would inspect the crankshaft sensor. See if it is dirty or damaged. This is where the PCM picks up the actual engine speed from.

 

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