Engine power is reduced

2003 Chevy Trailblazer-CHECK ENGINE LIGHT AND REDUCED ENGINE POWER ...

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Dec 23, 2011 - 2003 Chevy Trailblazer-CHECK ENGINE LIGHT AND REDUCEDENGINE POWER ... The reduced engine power ligth comes on and I lose power. ...Next, the fan clutch failed -- which is when he did an "above and beyond" .... yesterday I have not replaced anything bc they have told me nothing is wrong.

the ecm is in limp mode causing the reduced power. That is a result of a sensor going out of parameters and shutting down the engine to protect the engine and the transmission.
You are required to have the fault codes read, repair/replace the problem item and reset the ECM when fixed.

Many things cause reduced engine power. Could be engine sensors/parts or could be transmission sensors/parts. You need to have the codes read. Repost with them and we can help you with your problem. Year, make, and model also helps..

The most common problem on your trailblazer if it has a 4.2 liter engine is the cam shaft actuator gets stuck due to a clogged screen. If the reduced engine power light is on then the check engine light should also be on. You need to check for fault codes to see what step you need to do first.

I suggest you tell us what this mystery vehicle is so we can try to help. But from what you described i would start by checking fuel pressure at the fuel rail. And changing the fuel filter.

It is the APP sensors , Your vehicle has electronic throttle control . P2122 Throttle Pedal Position Sensor Switch Circuit Low Your best bet would be to take it to a qualified repair shop .

You may need to find a different shop

Nothing showing up, is about as common
as any vehicle coming into a repair bay

They know you won't pay diagnostic time or believe
anything your told,so they sent you on your way

there is a acuator that contolls the throttle they dont use a cable anymore. thats were i would look 1st

This has nothing to do with the heat on the vehicle .
Reduced Power
The reduced power telltale is turned ON by the cluster when it receives a command from the body control module (BCM). The engine control module (ECM) (L81) engine sends a message to the BCM over the CAN serial data link.
The reduced power telltale is illuminated when the ECM is limiting engine torque in a low traction situation. This telltale is used only for the V6 (L81) engine application.
The reduced power telltale is turned ON by the cluster for 2-3 seconds, when the ignition is turned to RUN, for a visual system check.

Taking the vehicle to a qualified repair shop an having it diagnosed would be your best . Unless you have a factory tech 2 scan tool to read BCM DTC'S - diagnostic trouble code's an have factory diagnostic repair info.
Reduced Engine Power Mode
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The ECM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The ECM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The ECM will perform the following actions:
• Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned off.
• Ignore the accelerator pedal input.
• Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.

It was reduced engine power. I'd bet you have some "TAC" codes, Unless you are very mechnicaly inclined then you need to end up at a shop. They have been rewiring the tac modual and replacing the trottle bodies to fix this problem.