Question about 1994 Chevrolet Camaro

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Engine problems? severe reduction in power, continually stalls when speed is reduced,

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You need to take it in the timing is off

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Reduce power light on has no throttle and keeps giving throttle accuator cdes

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Reduced Engine Power Message Displayed on GM Vehicles
Dec 10, 2012 - Tech Tip: Reduced Engine Power Message Displayed on GM Vehicles ... Model year 2008-'10 vehicles must have the engine control module (ECM) reprogrammed ... Do not drop the electronic throttle control components.

Oct 28, 2015 | Cars & Trucks

1 Answer

My 2006 Buick lacrosse reduce power light came on today--what does that mean

Reduced Engine Power
Refer to Throttle Actuator Control (TAC) System Description in Engine Controls - 3.6L or Throttle Actuator Control (TAC) System Description in Engine Controls - 3.8L
TAC System Default Actions/Reduce Power Modes
There are 2 reduce power modes that the engine control module (ECM) can default to if an error is detected in the throttle actuator control (TAC) system. If an accelerator pedal position (APP) sensor 1 or APP sensor 2 circuit fault, throttle position (TP) sensor 2 circuit fault, or if a TP sensor 1 circuit fault is detected with some APP angle, the ECM goes into one of the 2 reduce power modes. In this mode, the engine torque is limited so that the vehicle cannot reach speeds of more than 100 km/h (60 mph). The ECM remains in this reduce power mode during the entire ignition cycle even if the fault is corrected.
If there is a condition with the throttle actuator control circuits, throttle actuator command vs actual position fault, return spring check fault, or a TP sensor 1 circuit fault, the ECM goes into the other reduce engine power mode. In this mode, the engine speed is limited to 2,500 RPM and the 3-6 fuel injectors are randomly turned OFF. At this time the Reduced Power indicator is commanded ON. The ECM remains in the reduce power mode during the entire ignition cycle even if the fault is corrected. Observe, if a TP sensor 1 or throttle actuator control circuit fault is present at the time the vehicle is at idle, with no accelerator pedal angle, the engine may stall.

Jun 21, 2015 | Cars & Trucks

1 Answer

Reduced engine power

Have the vehicle checked for DTC'S - diagnostic trouble codes ! Do you know what electronic throttle control is ? The gas pedal assembly has electrical connector an sensors inside ,hooked to the PCM / ECM - engine computer . The engine computer uses these position sensors inputs to control the DC motor on the throttle body to open the throttle plate to control the speed . Plus there are position sensors inside the throttle body to input PCM/ECM to see if it's calculations are corect . Your best bet maybe to take it to a qualified repair shop .
Drive by Wire Function and diagnostics by Wells

Reduced Engine Power Mode
When the PCM detects a condition with the TAC system, the PCM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The control module will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The control module will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The control module will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The control module will perform the following actions:
- Limit engine speed to idle by positioning throttle position, or by controlling fuel and spark if throttle is turned off.
- Ignore accelerator pedal input.
• Engine shutdown mode--The control module will disable fuel and de-energize the throttle actuator.

May 12, 2017 | 2004 GMC Sierra Denali

1 Answer

2003 nissan frontier stalls when i slam on the brakes

Check oil level, but might be idle motor going bad. The idle motor kicks down the idle as needed as the rpm dictates. If sudden reduction in rpm occurs the idle motor normally keeps up and motor continues running at reduced idle. Unless its going out on you, then you may experience stalling when speed is suddenly reduced such as hard braking.

Mar 16, 2013 | 2003 Nissan Frontier Crew Cab

1 Answer

Stabilization traction comes on with reducing engine power for 2009 GMC Siera

not under warranty. What was the trouble code from the computer?

Aug 16, 2017 | GMC Sierra Cars & Trucks

3 Answers

Se enciende la luz power reduction y el carro avanza lento "Power reduction light comes on and the CAR drives slowly" (lacks normal power)

I have problems with power reduction and review it with the computer but sheds no fault code, and I made several changes but it is not

Jun 02, 2012 | 2001 Isuzu Rodeo

1 Answer

In my 2007 tahoe power reduction message comes on what could be the problem

Your Tahoe goes into "Power Reduction Mode" to keep you from continuing to operate the vehicle with an OBVIOUS problem and destroying high-dollar parts like catalytic converters, cylinder heads, etc.. Yeah, the old days of simply ignoring Check Engine lights are over.... The manufacturers have made it so the engine will go into reduced power mode and FORCE you into properly maintaining your vehicle.

(Not saying that you don't maintain your vehicle...Just pointing out that you can thank all of those people that continuously run around with warning lights SCREAMING all over their dash for the wonderful little "Reduced Power Mode" feature.)

As for what could be actually causing thie problem? Well, just let me say that the last time I counted, there were over 600 "generic" OBD fault codes available for most cars (80% of which will turn the Check Engine light on long before reduced power mode takes place), and several hundred more "vehicle specific" fault codes that have not yet made the generic code list.

So, to put it simply, you will have to scan your computer network and gather all the fault codes and perform fault code diagnostics to determine the actual cause of your problem.

Jan 10, 2012 | 2004 Chevrolet Tahoe

1 Answer

I have a 2006 Chev impala. Engine power reduced. I have had the accelerator pedal changed, the housing for it changed, and replaced the computer and paid to have it "relearned," Still having...

There are several causes for this, sadly in your case none of them were addressed at all.

In any case, changing the accelerator pedal wouldn't help with that particular problem unless it was
broken in such a way as to prevent it from being pushed down.

A reduction in engine power is part of the engines' computer (PCM) program to prevent damage. The root cause of the power reduction is what needs to be serviced. That is why even after a new computer you still have the problem.
On a GM vehicle with the factory programmed PCM, reduction in engine power *if that really is what your vehicle is doing* is sometimes referred to as "abuse mode." If at any time there were any incidents of doing a full throttle start, this mode and thus it's programmed reduction in engine power would be enabled.
Another cause of reduction in power does not have to pertain to a PCM program but rather the engines' running condition. Bad spark plugs, plug wiring, fuel system problems, gross exhaust leaks or engine air intake problems will cause loss of power.

I thought it might also be of service to you to remind you to carefully review your warranty, as the engine computer (PCM) is part of the emissions system and thus covered 100% far beyond the powertrain warranty required by EPA law.

Jan 12, 2011 | 2006 Chevrolet Impala

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