Question about 1995 Buick Regal

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Check Engine light & slight hesitation

I have a 95' Regal with the 3.8 L, normally runs great and would shudder only occasionally while excellerating or on cruise at about 2000 rpm, recently when the engine gets hot (after approx. 15-20 min. running time) the check engine light will come on and the car will hesitate or miss slightly under accelleration. It almost feels like it is being starved a little. I have already replaced the fuel filter and O2 sensor 1 and still no change. I have already had the transmission checked and it is ok. Where to next?

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  • truckerken Jul 01, 2008

    we are having the same problem, replacing the ignition module was the recomendation a mechanic friend gave us.

  • truckerken Jul 01, 2008

    found a loose connection on the plug wire when starting to replace module for ignition, so didn't replace. will see if that ifixed the problem.

  • Anonymous Mar 18, 2014

    Car will start and run until it warms up, then hesitates and dies when idling. The check engine light is also on.



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I had the exact same problem. The mechanic found a spark plug that was leaking on the back of the engine that was a pin to get to.

He replaced all plugs and wires and I no longer have this problem, so you may be onto something with the plug wire being loose.

Posted on Jul 22, 2008

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If you look under the cat. converter there might be a plug that you can remove to clean it out with.If you remove the plug then just rib - up the engine a time or two .That will clean it out for you.If the code that Auto Zone pulled up was PO420 then you might start by replacing the 02 sensor that's right before the cat. converter.

Posted on Jul 02, 2008


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