Last post on Jan 31, 2011 at 11:34 AM
You are in the Isuzu Trooper
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Isuzu Trooper II, Engine, SUV
#50 of 59 Re: Engine Check and Reduce Power lights are on. [biryani]
Jul 19, 2010 (10:21 am)
I am having this same problem - but it only occurs when it is above 85* outside. Last August it started, I spent several hundred dollars and several having it trouble shooted and I thought fixed.Would run fine, then have the issues randomly. Replaced 02 sensor, idle control, etc. 3 different shops. Then was told maybe needed to have the fuel injectors cleaned, used Lucas fuel cleaner. Ran great all fall, winter, spring (also rebuilt transmission this spring). Last week it started it again. Very random, doesn't matter if AC is on, it will reduce power. If I pull over and let it sit for about 5 minutes it runs great again. The check engine light will also go off after driving a couple of miles. Anyone else have a solution?
#51 of 59 Re: Engine Check and Reduce Power lights are on. [johndeeregirl]
Jul 21, 2010 (11:17 am)
Finally I found out this stupid "REDUCE POWER" light on resolution.
It comes in only because your battery is start dying, you would think it's working perfectly fine but in reality it just start dying and not sending enough voltage to your ening.
All other functions will remain working fine untill it really died but for the 4 wheel drive SUVs, voltage has to be on a constant level.
So, if you see that light start coming either try to recharge your battery or replace it with good one.
This exactly what happened to my Isuzu Trooper 2002 SUV. Good thing is that mechanic from Isuzu dealer is my friend and he told me about that. So I bought a new battery and go back to dealer and installed it by myself (coz they are charging $200 just for battery and installation) and now there is no more Reduce Power light.
#53 of 59 Check Engine light flashes
Apr 07, 2009 (8:15 am)
I have a 2002 Trooper, 85,000 miles. When I accelerate the check engine light flashes, when I let off of gas it goes away. Just a weeks prior to this problem I turned on my heater and my truck died. There were none of these problems until I changed the spark plugs and put a new battery in it a couple of weeks ago. The battery that was in it was too small. Would either of these changes cause these problems?
#54 of 59 Re: Check Engine light flashes [grabber7]
Apr 07, 2009 (8:59 am)
Troopers are real picky about the plugs you install. Stay with those listed in your owner's manual. My 2000 LS came with the following listed for use. I used the Champion RC10PYP4 that matched what came from the factory:
#55 of 59 EGR on 2002 trooper
Apr 15, 2009 (8:29 am)
Is it okay to clean EGR with carb cleaner?
#56 of 59 Re: Check Engine light flashes [grabber7]
Apr 18, 2009 (3:52 pm)
I am sure you did not disconnect the battery properly. When you did this You erased all the E.E.R.O.M Electrically erasable read only memory. I would not be surprised If the computer needs to be "reflashed" or reprogramed or even worse you might have done physical damage to the computer. Maybe if your lucky the PCM Power Train Control Module will re learn Its programed instructions.
How do you know the battery was to small? Make sure you did not put a larger battery then needed compare the old and new battery. Hopefully you put O.E Orgnial equipment spark plugs in the car. There is a lot more to batteries, spark plugs and even air filters Nowadays. Every thing is tied into each other and the computer. I would suggest taking this to a shop. Hopefully this helped.
#57 of 59 2001 Trooper Trouble Codes P1125, P1295 and P1515
Jan 08, 2011 (8:40 am)
I had the same codes displayed and this is what I found. Isuzu moved the ECU into the engine compartment and the wiring is most sensitive. After replacing the TPS (throttle Position Sensor) the problem still occured. You recieve these codes becuase there is a loss in cunductivity within the wire harness in the engine compartment. The connections after time get loose and correded. I pulled apart every connections of the wire harness within the engine compartment, cleaned and made sure they snapped back together. I was told by many mechanics that this is a common problem and most recommend replacing the main wire harness. This is a major job if you do not know what you are doing and the harness itself costs $700+/-. By simply making sure that your connections are solid, they problem will solve itself. My Tropper was down for three weeks, new battery, new TPS and the problem was just the wires. She has been running like new with zero problems.
I hope you find this helpful. Exhaust all avenues before spending major $$$$. It took me a good hour to make sure alll the connections were cleaned and snapped together. Good luck.
#58 of 59 Re: 2001 Trooper Trouble Codes P1125, P1295 and P1515 [fkorbmacher]
Jan 08, 2011 (9:14 am)
What did you clean the connections with? That is what they were going to do last year, replace the main wiring harness. I thought that was ridiculous, so I replaced a bunch of other parts and still have the issue. Let me know what to clean the connections with and I will give it a try. I also experience the engine turning off while the tank is almost empty. I wonder if there is crap in the tank?
#59 of 59 Re: Isuzu 2002 ECBM Location [cope77]
Jan 31, 2011 (11:34 am)
It's located behind the passengers side head light. You will see all the brake lines running into it.