Question about 2000 Isuzu Rodeo

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The reduce power light comes on and the check engine light stays on what may cause this problem

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The 1st thing u need to do is have the system tested for the trouble code that is stored when the check eng light comes on, that will lead you in the direction of the problem

Posted on Jul 24, 2009

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Could be a TPS sencor or vehicle speed sencor gone bad, You really need a obdII reader to know what it is

Posted on Jul 24, 2009

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1 Answer

Why did the reduced engine power and service traction light come on. The car can be started then looses power and stalls out.


When the check engine light comes on it disables other module features as a safety issue. The reduced engine power light is normally caused by a defective throttle actuator motor assembly. In some instances, it can also be caused by a defective gas pedal sensor as well. In my experience, the throttle actuator motor is the most common repair

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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
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

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Dec 29, 2015 | 2008 Ford F-250 Super Duty

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Reduce engine power intermittent


Run a diagnostic test to see what codes come up and go from there.

Oct 04, 2014 | 2002 GMC Envoy

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What is causing reduced engine power message to come on with check engine light and service stability control warning


There are a lot of things that can cause this. Get the check engine light test done for free at a local auto parts chain.

Aug 15, 2014 | 2011 Chevrolet Silverado 1500

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What causes the reduced power light and check engine light o come on while running and makes car lose power?


sound like you have a co sensor problem. you will have to take it for OBD scan. will give you the error code for what sensor is faulty.

Aug 14, 2014 | 2003 Isuzu Rodeo

1 Answer

The engine light in the 2004 Envoy stays on and the reduced engine power light


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

Jun 21, 2012 | GMC Envoy XL Cars & Trucks

1 Answer

I have a 2003 Envoy- GMC. Why does the reduce engine speed light come on


you need to scan you vehicles ECM, there is a trouble code stored there. depending on where you live most parts stores( such as a shucks/orielleys) will have a scan tool they will let you use if the vehicle is in thier parking lot. this should diagnose the issue, provided the battery hasnt been disconnected since then.

Mar 12, 2012 | 2003 GMC Envoy

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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1 Answer

Reduce engine light comes on with a/c use.


Most likely it is the fan clutch as it is computer controlled. I have had 2 in the shop this year with the same problem. To be sure, have someone check the codes before you start spending your hard earned dollars.

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