After tune-up no power in accerelation

Asked by grandmother Nov 17, 2014 at 12:25 PM about the 2003 Lincoln Aviator Luxury

Question type: Maintenance & Repair

replace 2 coils, spark plugs, general tune-up. changed oil, put fuel injection oil, gas saver,gas/engine cleaner. when you push on the gas padle very slow in pick up speed, even if you change gears no RPM increase. We have paid $480. to a certified auto repair have taken the SUV back but they said they performed the correct repair, could be the catalytic converter. Help please.

1 Answer
100

DC answered 9 years ago

Are you hearing any popping sound under the hood. Like air popping. If so... The spark plugs may have been installed too loose or cross threaded. If so... You can lose compression thus losing power. Just an initial thought...

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