Chevrolet - Tahoe :: 2003 - Reduced Engine Power Error
Dec 11, 2014
From time to time, my Tahoe gives me the "Reduced Engine Power" error, and I lose acceleration capabilities and have to pull over. After a min or 2, I can go again, but the check engine light stays on. With no rhyme or reason, the light will be on or off on the next start up. The problem may or may not happen during a short ride or may happen quite often. I have replaced the Accelerator Pedal sensor, so that is not the problem, I'm assuming.
I've been told that it is the Throttle Body that needs to be replaced, but no mechanic can confirm. They just want to replace it and the pedal. I would really like to keep this truck for a couple more years. Other than this problem, the Tahoe has been pretty good to me. Here are the codes that have been read: P1125, 1516, 2120, 2125 ....
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I have a 2003 Tahoe that I love but is driving me crazy with a "Reduced Engine Power" message. I am driving along and suddenly it dings at me, the message center says "reduced engine power" and I am losing speed. It goes into a "limp mode" in which I cannot accelerate, it cannot pull itself up a hill, and the engine misses badly. I can pull over, shut it off for a couple of minutes and then start it up and run again just fine until it decides to do it again.
There seems to be no rhyme or reason, one day it did it 4 times w/n the first 20 miles, then ran 100 miles w/o doing it at all. I recently took it on a trip that normally takes me 1 1/2 hours, it took 2 1/4 hrs that day because I had to pull over so many times. I was having to stop every 3-4 miles by the time I got there. My usual mechanic has completely given up, told me to trade it. I have had it to another mechanic for over a month now, 3 times he has thought it was fixed, but it wasn't. One time, I didn't even make it the 5 miles to my house before it acted up again.
One other note on this: this past trip I made, I left early in the morning and my lights were flickering high/low. . . this went on for several miles. Finally my lights quit flickering, then I lost engine power, pulled over, shut it off. When I started it back up, the lights started flickering again. The cycle seemed to continue, once the lights would settle, the engine would lose power. I took it to a parts store and had the battery and alternator checked. They said both were fine. (Had never noticed the light thing before, but I can't think of a recent trip after dark.) How I can pass along to my mechanic?
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I just replaced spark plugs and now it is running rough and reduced engine power light is on. did not mix up wires or coil packs. did one at a time.
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This has been a decent truck... lately you drive for 5 miles or so.. it goes to reduced engine power. if you get to side of the road and turn completely off and sit maybe 10 seconds or so, it goes fine again.... I have tried to get a computer reading, but by the time I have gotten it anywhere, the check engine light is off again..
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I have a 2003 Chevy 1500HD 6.0L 4x4. I've recently started getting the "Reduced Engine Power" light along with the P1516 Fault code. I've checked all the wires going to the TAC Module, TPS, and MAP, all appear to be in good condition. The Throttle Body is clean and the "flapper moves freely with no sticking. I only have this issue when it is warm outside. Recently we've had fairly code days between 32-50 degree weather but on the few days that it has gotten warmer, I've had the issue. Since it seems to only happen when its warm, I believe it to be a moisture issue, but I'm not sure.
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I have a 2007 chevrolet uplander. Yesterday it started giving a message of reduced engine power and the engine light comes on.
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I have a 2010 Chevy malibu LT with 120000 miles. And today while I was driving my engine disabled and there was a message of reduced engine power. After letting it sit I turned the key and nothing happens all the lights and things come on but the reduced engine power and engine disabled shows up. The car won't crank up. Earlier that day I had my engine coolant temperature sensor replaced. What is going on or what needs to be done? I am getting so frustrated with this car.
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While my wife was re-parking my 2007 S60 this morning (currently at 73,143 miles), the error message "Reduced engine performance" came up.
She had switched-off the engine before calling me on the phone to report it, else i would have told her to rev the engine to see how far the rpm gauge could go.
While checking through the error on google, noticed there were several complaints on this in the past but could not see any inferences on what was done to resolve this except for guys who mentioned repeated visit to dealership.
When she switched-on the engine again, the error message didn't come up and she could rev the engine up to 6500rpm, i intend using the car for a long journey next week and do not want any breakdowns.
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IOur 2003 suburban often gets a "reduced engine power" displayed by the computer and the RPMs drop to below 1,000. The vehicle will not accelerate and will not go above 1,200 RPMs no matter how much gas it is getting. Flooring the gas pedal has absolutely no effect and the truck continues on its merry way at about 20 miles per hour.
I have been told by various amateurs that it is the gas lines or electronics that regulate the gas flow. The reduction in engine power seems to happen randomly, but most often if the vehicle is idling for too long (and I'm sure the 110 degree heat doesn't work). I can get it fixed much quicker if I know what the problem may be.
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My truck is an 2003 2500hd with the 6l engine and 89k miles. From time to time I'm getting message "reduced engine power". Usually at the morning after 10-15 minutes after starting. I have to pull over, shut it off, wait few seconds then restart it. The ses light goes off usually by end of the day ( or after few hours ). When scanned by chevy tech showing code P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance. I have new battery with new main cable. TAC Module was cleaned.
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I have a 2003 Escalade that I have maintained since day 1. Occasionally when driving the car it will say system disability and reduced engine power, which drops the speed to 20 and I can give all the gas I want it will not go. Happening on and off for 5 months. I can shut it on and off a couple times and it will go back to normal. Have taken it in a couple times to dealer and they have drove it and drove it and it behaves. They believe it is the Throttle body and sensor. But for the price of it, just replace the fuel pump 2 weeks ago, they suggest to see it happening to give me a 100% diagnosis. For now they believe it is that. Should I fix it or wait till it happens and slowly putt into the dealership.
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It happened as I was stopped at a traffic light. without warning it just revved up as though I punched the gas pedal, which I didn't. had my foot on the brakes but it still wanted to fly! I dumped it into park and it really howled! I shut off the engine, started it back up and everything was fine! what the heck caused this and what needs fixed?
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What fuse controls the engine compartment Light?
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So far, I have a small fortune into fixing this / related problems. I'll state what we've done and what is currently happening. I've taken it to my normal mechanic several times, I'm looking for additional opinions because they basically have no idea. This is on our 2003 Chevy Tahoe, my wife's daily driver, and what my kids are normally riding in. It only has about 60K actual miles on it and is a flex fuel model, if that matters.
Originally, the truck would have trouble starting. Cranking, but no ignition. Waiting a a few seconds, try to crank again and it would start up. This went on for about a week and then it stopped cranking cranking at all. Had it towed to our mechanic. PCM B fuse was blown. Replaced PCM B Fuse (20A) and it blew again after starting. It died while trying to idle. They did some voltage drop tests, seemed good. I'm not sure they did any current tests at the fuel pump which is on that fuse. Ended up there for 4 days (yes, lots of labor) and leaving with no real clue, but a 25A fuse would work.
A week later,we were still having problems (but my memory is a bit shady). The mechanic did some pressure tests and bleed tests and said that our fuel pump was outside the specified pressure and needed to be replaced. Dropped tank, replaced pump and sending unit with a new AC Delco, replaced fuel filter. Took it home, it seemed great.
Then my wife called me and said her truck was dying at every stop sign. When she got home, I verified, the tank read 1/4 full, truck would die at almost every stop. Truck would die slowing from 45 to 20 mph to make a left turn. This was dangerous, took it back to mechanic. Mechanic couldn't find an issue, but figured it was the sending unit. Replaced the part under warranty, didn't charge me any labor. They thought that we were really empty at 1/4 tank and had a bad sending unit, but that doesn't seem to be the case now.
Here are the basics of where we are: Truck runs fine when above 1/4 tank of gas.The truck suddenly dies when stopping or slowing down when the gas gauge reaches 1/4 tank. Starts right back up with no struggle, otherwise runs fine when the tank is low..Tank never empties. We can get a maximum of 16-17 gallons in it. The tank is 26 gal, and we previously have filled it with as much as 24+ gallons in one filling. The gauge needle barely touches F when full, and basically, the car is undrivable when it reaches 1/4.
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I bought my 2005 Chevy Tahoe used in December 2010, with about 2200 engine hours and 54,000 miles. It's been a great car - I love it! In January 2012, when the engine had about 3000 hours, it reset to zero! I went to a dealer, they had no explanation. They contacted GM, who had no explanation either, other that to say it couldn't be done. Since I was left with no way to reset the hour log, I made a note of what I thought was the correct amount of hours. Last month, with about 350 hours showing, it reset again to zero!
I'm at a loss to figure this one out, and don't want to waste my time again with the dealer, or GM. Is it possible cold winter weather has anything to do with the on-board computer malfunctioning? Is it possible the odometer was tampered with, before I bought the car? It runs well, but the only thing I've had to deal with is the transmission, which went out two days before Christmas, at about 87,000 miles. $3500 later, we were back up and running.
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I have a 2007 Chev Tahoe. Description of Problem: Past month engine light came on. Then some days for a short time will go off. When light is on the auto start wont work. Battery has been drained so today I changed the battery and have a total electrical power system failure. Zero power to anything. Last month I put a scanner on it but i didnt save the code. It was related to a "throttle body module" i think. Have been reading about the BCM also so im at a complete loss...
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Our 2006 Chevy Tahoe will at times while running the speed limit (or slightly above) will suddenly without warning lose power. All the gauges remain in good ranges. This will happen without warning and not on a regular basis - sometimes going six months without happening and then happen three times within thirty minutes. The stability system warning message comes on as does the check engine light. Also the traction control warning light comes on. We can pull to the side of the road, turn the engine off for a few seconds and then it will start up again and run well with only the check engine light on. When this happens, the rpms will drop and go under 1500 and the engine will still be running, just without power.
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I have a 2001 Chevy Tahoe, and for the past couple of years, I have been having an incredibly frustrating issue with my car. When I go to turn the key, it sounds as if it is about to turn on (ie the engine is about to turn over and it sounds normal) then right before it catches, it will start clicking, the noise sounds like the battery is dead. When it first started happening, I called AAA, however by the time they reached me, the car had started again. Now when it occurs, I wait 10-15 minutes and it will start- every time. I have had it in to 4-5 different car repair shops, however no one can seem to figure out what it is. I have had the battery replaced, and several other things altered, etc, however nothing seems to fix the problem. I am not sure where to go from here, I was informed to check the fuel pump and/or filter yesterday- it happened twice on me yesterday as well.
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My HVAC blower switch only works when I put it on 5 (the highest setting). What needs to be replaced (besides the whole truck)?
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I have a Chevy Tahoe 1999, Went to the store came out my Tahoe wouldn't start i had it towed home. My husband said the starter was clicking but wasn't getting enough power to turn the flywheel. We got a new starter put it on and it clicked just like it did when i tried to start it before. We took the new starter back and had the old one tested and it was ok so we put it back on and it still clicked like before. He said the flywheel was easy to turn, then he replaced the hot wire from the battery to the starter, now the starter don't even click.
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My 08 Tahoe will 'die' at odd times. Sometimes I open the door and there is no charge from the battery. This can happen between opening the door with the remote and trying to start the car. It can happen between putting the car in park and cutting it off. I have come home, dut the car off and been unable to open the doors until I remember how to do it manually. a jump will always restore the car - for a while. If I leave it alone for an hour or so,it usually will start but the clock and climate control have reset. Most recently, the alarm went off, I turned it off using my remote. I found later that the car had 'died' momentarily. I have had the car checked and rechecked. Everything seems to check out each time - battery, alternator, whatever. This stated a 18 months ago when my battery died and I got a new one. Most recently, my mechanic has changed the make of the battery and checked every connection and every component. I am now waiting to see if this happens again. Usually, it happens every 4 months +-. I am at my wits end. I do not know what to do, My mechanic does not know. He has even tried to update the computers n the car.
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