Question about 2001 Isuzu Rodeo

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Reduced power light is on and truck will not pick up speed

The reduced power light goes off and on at times. When it comes on the truck has a slow take off and will not pick up speed over 40 mph. I bought the truck 2 months ago as is and the light came on the first day but when I stopped and turned the ignition off it didn't come back on. Now its on again and turning off the ignition isn't working this time.

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  • garryadrian Oct 30, 2008

    My 2001 rodeo is doing the same thing, i replaced my Throttle positioning sensor and that wasn't it, they said it could be my APS but isn't that the same thing as the TPS? HELP!!!! I just bought it 4 weeks ago and it started this **** the day after I bought it.

  • Blacksuv Apr 10, 2009

    My 2005 rodeo is doing the same thing, Engine light and Reduced Power .....the computer and battery were replaced October 2008, seemed to be okay until NOW! 04/09. Service dept. can't find anything wrong?? Any solutions out there??

  • Anonymous Mar 12, 2014

    after coming to a complete stop jerky when taking off no power.after accelarating then will pick up speed

  • Anonymous Mar 24, 2014

    when light is on feels like pulling a anchorwhen accl. till you reach about 3000 rpm then takes off lights off and could stay off awile or backon next stop

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Hello,

I just purchased my 2001 Rodeo the engine light came on. I replaced the spark plugs and oxygen sensor and though the car seemed to ride a little better, the engine light continued to stay on. After a week or so I experienced the exact same problem. The vehicle would not go over 40 miles per hour and the reduced power light came on. I had it put on a machine and got many different codes, however, all the codes lead up to the computer. I had just the computer replaced and all is well. Most of the time, the read out will show many codes, but most of the time they all lead to just one part. Try that. It worked for me and now it runs great.

Posted on Nov 03, 2008

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This happened to my 2002 EXT and two of my buddies Escalades. All 3 were AWD. All we did was replace the Front Hubs. I replaced both Front hubs and the speed sensors. Actually I replaced the speed sensors first because thats what code was coming up, and it didn't fix the problem. So after talking with a freind who is a big time GM Mechanic, he told me it's probably my barrings and since they are sealed I needed to replace the hubs. This is an easy job. I did them myself, and I am by no means a "mechanic".

Posted on Mar 21, 2012

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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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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 .
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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.

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Reduced power is a mode the engine goes into when there is something wrong with the cooling or the firing. If the engine gets to hot it uses the pistons to air cool. This of course is not a for sure but where I would start.

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1 Answer

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reduced power usally points toward a gas pedal to throttle correlation meaning the drive by wire system is where the problem is

Apr 18, 2009 | 2001 Isuzu Rodeo

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Locate the IP to body harness connector, which may be located in and around the left hand kick panel area or inside the IP. Check to see if there is a water leak into the area and repair as necessary.

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