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Q: Reduced engine power

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My car engine performance is reduced what could be the cause

My car has 154016 miles.
My car has an automatic transmission.

A: Hello there, many common problems will caus...

Hello there, many common problems will cause your 2009 Buick Terraza to have a loss of engine power. The most common would be spark plugs, fuel pump, coil, fuel injectors, MAF sensor, vacuum leak, oxygen sensors, or a wiring harness fault. A qualified Technician such as one from YourMechanic will be able to diagnose your loss of power and make any repairs required for your vehicle to run normally again.

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