2005 Grand Prix Engine Power Loss

Asked by Sep 08, 2016 at 02:40 PM about the 2005 Pontiac Grand Prix Base

Question type: Maintenance & Repair

Check engine light came on and I took my car in.to
get the codes which read which stated I need a
tune up. Did the tune up and the light is still on and
my information screen says I'm losing engine
power. Can anyone think of a reason why this
would be happening?

2 Answers

25,355

to what extent did you do the tune up???? fuel filter/cyls all hittin? vacuum leak/bad gas/converter....?

Codes read to replace spark plugs and writes do that's what I did.

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