power engine reduced nothing worked.
06-09-2010, 07:15 PM
#1
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power engine reduced nothing worked.
been in and out of different shops, had multiple people look at the car. Tried 3 different ecu's. had each one tuned by different places, gm zzp ottp, no matter what happens i drive for about twenty min and i get it, even when im not in boost or anything like that.
what i replaced:
TB, all the tb sensors, wires, connections
ecu, 3 different ecu's, all the wires, all the connection things
IC pump, new tubes for it,
o2 sensors
intake mani w/ a new maf
fuel pump
every sensor tb pedal ect.
all this has been done and im still getting the engine power reduced. I was told it had to do with something internally in the engine but i want to see if anyone has anything different i can try before i end up having to sell this car.
what i replaced:
TB, all the tb sensors, wires, connections
ecu, 3 different ecu's, all the wires, all the connection things
IC pump, new tubes for it,
o2 sensors
intake mani w/ a new maf
fuel pump
every sensor tb pedal ect.
all this has been done and im still getting the engine power reduced. I was told it had to do with something internally in the engine but i want to see if anyone has anything different i can try before i end up having to sell this car.
06-09-2010, 07:24 PM
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06-10-2010, 03:45 AM
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Could be the catalytic converter. They were recalled on some SS model Cobalts. Mine was recalled, but mine still hasn't failed on me. Just a suggestion. I would talk to a shop and see if ur VIN is included in the recall.
06-10-2010, 08:56 PM
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just went to scan the codes and there was no cel up.... did multiple crank relearns to no avail.
got a scanner, checked the car even though no cel was on and got codes. weird?
anways its a P2135 and P2176
got a scanner, checked the car even though no cel was on and got codes. weird?
anways its a P2135 and P2176
Last edited by Viceversa10; 06-10-2010 at 08:56 PM. Reason: Automerged Doublepost
06-10-2010, 09:56 PM
#15
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P2135 Throttle/Pedal Position Sensor/Switch "A" / "B" Voltage Correlation
don't know about this one.
P2176 Throttle Actuator Control System - Idle Position Not Learned
this one should have corrected itself as your car does an idle position learn everytime the car is started. seems to me your still having issues with the throttle body whether it be wiring or something else.
don't know about this one.
P2176 Throttle Actuator Control System - Idle Position Not Learned
this one should have corrected itself as your car does an idle position learn everytime the car is started. seems to me your still having issues with the throttle body whether it be wiring or something else.
06-11-2010, 02:10 AM
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gunna take it back to the shop and see what they say about it, for the tb maybe they can trace the wire and see if its split somewhere or something. but now that i have the codes it should help a bit.
06-11-2010, 01:33 PM
#19
don't remember if you mentioned it or not but disconnect the battery. my wifes car had the engine power reduced happen like a week or two ago, she shut it off, did it again like 2 or 3 times after waiting like a minute or so in between start ups, did it with me in the car yesterday twice, i noticed it wouldn't make or didn't wanna make boost, looked at the air filter at my buddies house, looked pretty dirty so swapped it out with the one that came with the CAI..it's an ebay one by the way, also DIScoonnected the battery for about 20 mins, hooked all back up, started car..drove down road, made boost...back to normal and hopefully for good, hopefully it was cuz the filter was dirty/nasty, it's an aem dry flow, can you clean them? i'm gonna search it next, hopefully you get your car sorted out,
oh an that's the only mod on her 06 ss/sc, 68,000 miles
oh an that's the only mod on her 06 ss/sc, 68,000 miles
06-11-2010, 05:41 PM
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i've disconnected the battery for a while but same **** still happened. My friend and i looked under the hood and checked out the fuses bc apparently having a bad fuse in the injector slot can do this too. hmm. i'll be cleaning my air filter and **** in a lil maybe i got alot of dirt which could also cause this. got a K&n btw
gotta wait till tuesday to bring it in. ****. well hopefully they can get it done, by any chance would my mods have any effect on this happening bc if this doesnt get fixed soon parents are going to make me go back to stock and sell the car.
gotta wait till tuesday to bring it in. ****. well hopefully they can get it done, by any chance would my mods have any effect on this happening bc if this doesnt get fixed soon parents are going to make me go back to stock and sell the car.
Last edited by Viceversa10; 06-11-2010 at 05:41 PM. Reason: Automerged Doublepost
06-18-2010, 12:08 PM
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yeah mine is doing this crap today. I checked my spark plugs yesterday, and after i did, the power reduced came on while we were going down the road. Now today after it went away, i went to the doctor and it did the samething. I could get out of the car and jiggle the battery cables around and it would come on, so could it be that the battery isnt connected good or what....but the car done fine before i messed with the spark plugs yesterday. Any HELP!!!!
06-25-2010, 12:34 AM
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Wow, you sounded just like me a month ago dude.
Here's the reason why you are going into limp mode and why all your repairs aren't fixing the problem. You need to get your car tuned by somebody with experience with the HP tuners program. My car had the exact same situation you are experiencing right now. Your throttle position sensor switch is related to either the wiring going to your throttle body and/or it needs to be tuned properly so it doesnt hit bad cells in the pcm.
Regardless of the situation, if you wish to keep your car, I recommend you talk to cobaltss3. He is the guy that saved my car from being put on the lemon lot. He is an expert at HP tuners and is familiar with this problem.
Here's the reason why you are going into limp mode and why all your repairs aren't fixing the problem. You need to get your car tuned by somebody with experience with the HP tuners program. My car had the exact same situation you are experiencing right now. Your throttle position sensor switch is related to either the wiring going to your throttle body and/or it needs to be tuned properly so it doesnt hit bad cells in the pcm.
Regardless of the situation, if you wish to keep your car, I recommend you talk to cobaltss3. He is the guy that saved my car from being put on the lemon lot. He is an expert at HP tuners and is familiar with this problem.
06-25-2010, 06:30 AM
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well the guy i got it from said that it was supposedly already hptuners tuned, said he took the torque management out, and set the rev limit to 7200, so i'm not sure what else he had done to it. I finally got it running again, but it's still acting like it's missing or something. So idk what i'm gonna have to do. All i know is it's damn annoying...lol
06-25-2010, 10:07 PM
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Wow, you sounded just like me a month ago dude.
Here's the reason why you are going into limp mode and why all your repairs aren't fixing the problem. You need to get your car tuned by somebody with experience with the HP tuners program. My car had the exact same situation you are experiencing right now. Your throttle position sensor switch is related to either the wiring going to your throttle body and/or it needs to be tuned properly so it doesnt hit bad cells in the pcm.
Regardless of the situation, if you wish to keep your car, I recommend you talk to cobaltss3. He is the guy that saved my car from being put on the lemon lot. He is an expert at HP tuners and is familiar with this problem.
Here's the reason why you are going into limp mode and why all your repairs aren't fixing the problem. You need to get your car tuned by somebody with experience with the HP tuners program. My car had the exact same situation you are experiencing right now. Your throttle position sensor switch is related to either the wiring going to your throttle body and/or it needs to be tuned properly so it doesnt hit bad cells in the pcm.
Regardless of the situation, if you wish to keep your car, I recommend you talk to cobaltss3. He is the guy that saved my car from being put on the lemon lot. He is an expert at HP tuners and is familiar with this problem.
went throught multiple ecu's tuned by zzp ottp trifecta and gm, so i find it hard to believe that hptuners would do much better than that. just my 2 cents.
and i found out that the wire harness was custom made by the previous owner of my car so the splicing job/sauntering was bad and the wire from the TB was coming loose and causing this to happen. Thanks to blue2.2 i did a little check and replaced the wires and now im problem free.
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