2004 Chevrolet Trailblazer Repair Question
Chevy boggs down ... no power
2004 Chevy Trailblazer 6 cyl Four Wheel Drive Automatic 100000 miles
We checked the catalytic converter and it didn't have back pressure. Changed the oxygen sensor. Changed actuaror.
What else could be the problem? When driving won't down shift after accelerates.
Possibilities: Inspect and test all the following listed below:
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Manifold absolute pressure sensor.
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.
Note:If it doesn't apply disregard it.
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