Reduced engine power

Asked by Apr 10, 2017 at 12:55 PM about the 2004 Chevrolet TrailBlazer LS RWD

Question type: Maintenance & Repair

Alternator went out.
Changed it something popped when cranking it.
Now REP.

1 Answer

87,155

Should have the vehicle scanned for trouble codes to verify what it is, but Reduced Engine Power a lot of the time has to do with the Throttle Positioning Sensor. Since it is out front by the alternator, may have disturbed the wires. Common for a wire to break inside the insulation by the connector going into the TPS.

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