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Reduced engine power light come on.would barely go what is cause an is it an easy fix 2005 Chevy pickup v8 4 door

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Depends on if you get the fault codes read. Engine lights come on to protect the engine and the gear box so have the codes read and then decide if it is easy to fix or not.

Posted on Dec 15, 2014

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Posted on Jan 02, 2017

  • 543 Answers

SOURCE: reduced power light/check engine runs very rough

usually when it gets colder outside the car will misfire and run rough because the ignition module/coil pack goes bad and makes it misfire,youre gonna have to replace the coil and module,,its the black long piece that sits on top of the spark plugs,1 wire connector and 4 10mm bolts remove them and pull up hard to pop the plug boots off the spark plugs,then install the new parts and you should be ok

Posted on Oct 20, 2009

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SOURCE: WHAT IS THE REDUCED POWER LIGHT ON AN 2005 CHEVY

It means that there is a problem in your throttle actuator control system.The PCM will limit power until the problem is resolved.You should probably take your vehicle to a GM Dealership for further diagnosis.

Posted on Nov 07, 2009

motor1258
  • 6674 Answers

SOURCE: 2006 Chevy Impala reduced engine power

best bet is to stop in at a Pep Boys, Autozone, or similar big autoparts seller, and ask for free trouble code scan, which should pinpoint area causing problem. If not obvious by codes, what is necessary to repair the problem code, get back to us with those codes and we will be glad to assist you further. Better this way, takes away the guess work, and saves you money, as well as getting it right the first time.

Posted on Dec 12, 2009

  • 1810 Answers

SOURCE: i am getting a reduced engine power message and

check your oil is it time for a change or just a refill

Posted on Jan 05, 2010

  • 714 Answers

SOURCE: The "engine power is reduced" light comes on

po455 is Probable Cause[s]

1. Defective, loose or missing fuel cap
2. EVAP canister broke, hose cracked or not connected
3. Purge or vent solenoid defective
4 . Vacuum leak at engine po121 code po121 means Throttle Position Sensor/Switch A Circuit Range/Performance Problem . it is usually indicative of a faulty throttle position sensor or faulty wiring harness in the engine bay.

Posted on Feb 27, 2010

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Diesel. Reduce power lite turned on. Shut off engine and started back up - lite is off. Can it be driven?


Jerry, Drive to a good shop. So many things can cause reduced power light unfortunately. The first step would be to get the truck hooked up to a scanner/computer and have the computer scanned for trouble codes. One thing that you could try is to drain the water from the water separator that is mounted on the frame under drivers front door. If the PCM picks up on water, power is reduced until water is removed/drained. It could be an exhaust sensor that is reading faulty. Unfortunately from here its impossible to tell you exactly what the fault is because there are just so many engine sensor inputs that could cause your problem. Check the attached links, forums,instruction and guides, Good luck
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How to fix power reduced in my Chevy duramax


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OK, many things can cause a reduced engine power message, ... as a regen message and no, idling long enough to fix a wheel WILL NOT plug it up. ... I have a monitor onmy truck that I can watch the accumulated soot grams ...

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Whats the ball park figure in money to fix trottl actuory control module


Engine power reduced can be caused by a number of different issues. Is the check engine light on and have you had codes read?

Let me know.

Sep 05, 2014 | 2005 Chevrolet Malibu

2 Answers

Reduced Engine Power message comes on along with the engine light. It does this off and on. Sometimes it runs good and sometimes it barely runs at all. What causes this?


need to have vehicle scanned the trouble codes will be stored in the computer most auto stores offer thi service for free check ur local area there are a few hundred different codes or problems that can cause ur problems and being interment can also be an electrical connection/harness problem

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why does the reduced power light come on , then the truck stalls. If you pull over and shut down the engine and wait a 30 secounds the truck will restart and run fine until the next time you start the truck. The truck has 48k miles

Aug 07, 2010 | 2005 Chevrolet Colorado

1 Answer

My 2005 chevy z71 will go to reduced engine power when pushing on the gas i believe it is the throttle position sensor where is an affordable place to get one?


it sounds me like the app sensor is bad, i dont think tps will cause reduced engine pewer, but app sensor will . u have to replace the trottle body to fix the app sensors uder the hood.
replace the accelleator pedal to fix the app sensors n the cab.
there is a ground wire in the big wire loom behind the intake if u loose ground ull get that reduced power issue i replaced throttle body and accellerator pedle n had the same reduced power few minutes after test drive came back cleared the codes then found a hit on idenafix for ground in the big wire loom ground went to fire wall and was bearly hanging on broke when i touched it fixed it witha crimp on fitting, havent had the code set since

Mar 25, 2010 | 2005 Chevrolet Silverado

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2005 chevy cobalt, car wont start ... check


disconecting the battery should reset the pcm. but you will need to find out what caused the problems.

Jan 06, 2010 | 2005 Chevrolet Cobalt

4 Answers

Why does reduce engine power light comes on chevy


That is a hard problem to pin point without knowing what codes the computer has stored. It can be any number or sensors or engine problems.

You can go to most auto parts stores and they will pull the codes for you for free.

Jul 27, 2009 | 2005 Chevrolet Cobalt

2 Answers

Car has no power when driving


Its a Mapp sensor super easy fix only like a $30 part

Mar 12, 2009 | 2005 Chevrolet Malibu

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