Misfire and rough idle

Asked by Mrbt671 Oct 20, 2017 at 11:20 PM about the 2004 Pontiac Grand Am SE

Question type: Maintenance & Repair

I  have an 04 Grand Am and it is running rough at
idle so I hooked up the scanner in his reading PO
301 and PO 171
I just changed  all  of the spark plugs but still reads
the same codes

4 Answers

GuruSDL8P answered 5 years ago

Chk fuel pressure if ok -chk fuel pressure regulator and fuel filter if pressure is low before the fpr..kl

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GuruF188X answered 4 years ago

I have the same problem with my grand am. Changed all the spark plugs and wires and it’s still doing the same thing. Don’t know what else it could be.

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10

GuruMY9FF answered 4 years ago

i dont know to much about this ,but had similiar problem so,i would guess that you might have a faulty spark plug pack, or tip.... check your plug bottom out and see if any are "torn"at bottom,because they will "ground" to the walls... then see if theres any blue to white "arch", to see which "one" it might be... for the pack..hope this helps...

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