Sensors on the pedal?? not sure what you mean by paddel though never heard of this term before
Testimonial: "03 Envoy:My reduced engine power keeps happening. My car goes 20 mph. Changed throttle body, pedal, wiring. Need new thermostat. Car not heating up."
hmm not sure about this ,but before you spend anymore hard earned cash ,try blocking off the ERG valve ,you know the one between the inlet and exhaust manifold .try that first and see if dies after that
if engine runs ok then thats your problem,as for the cat if it was blocked it wouldnt run simple as that .thermostat ,yes it must run right temperature or engine will be running on autochoke which will cause the cat to fail .
check the engine temperature is correct before you change the thermostat,look at the erg valve first ,this will cause engine to lose power and give the symptoms you describe
got to go to work ,have a another look at this question tonight
if engine is not reaching temperature then this can cause the cat to block up ,before you go any further try disconnecting the exhaust at the manifold ,i know it will sound like a tractor but try it ,if it runs ok you need a new cat
you are changing sill things for nothing ,just because a gauge has the wrong resistance and its showing a bit different to teh norm is not an excuse to wast cash on it.please describe what the problem is now and what has been done to it so i can give a second opinion but i would have expected your local mechanic to have been able to tell you whats wrong with this vehicle straight away .Or your money back
yes i would have gone for the computer ,so two choices either trade it in quick ,or try to find the complete works from a scrapyard ,like a ECU ,the key chip and the transponder ,so it will run straight away,the dealer will not fit a secondhand one they want the profit
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I don't think I have a solution, however i believe to have information which may help. The same thing happened to my 2003 envoy XL. each time i brought it to the dealer, they found no codes at fault. I almost thought they didn't believe me. I would drive for a few days and it would happen again. i do lots of highway driving so i'm getting good at the re-start thing. One day, it happened only a few miles from the dealer. I decided to drive there (20mph) with flashers on. i pulled in and got my guy and made him drive the truck. he plugged in his computer gizmo and said he has a few codes to review. The truck is there now...we shall see...
SOURCE: What does reduced engine power light mean
this model has what they call fly by wire.. no accelerator cable. If the computer detects a problem in the thottle system it will not allow the engine to accelerate and will show reduced power and possibly set a check engine light. The dealer usually wants to replace the throttle assembly which is very expensive and usually un nessesary.
I have had a lot of succes with just cleaning the throttle plates real good.
SOURCE: 2002 gmc envoy check engine and reduce engine
typical causes: dirty air filter, clogged up catalytic converter
SOURCE: 2004 GMC 2500, 6lt. V8. Reduced Engine Power Keeps
Have the codes checked first and go from there.
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I spelled a few things wrong! Forgive me! But I did have the pedal and the sensors changed. Also the throttle body with other wireing done.Now they are saying that it may be the ECM that has to be changed.I just put a lot of money in this truck and what if this is still not the problem. Should i change this part.
So if I block off the ERG valve and it dies or not dies what do this mean what do I fix.
I also wanted to say that what about my cat converter,or I also need a new thermorstat, my car is not heating up all the way. It's not over heating.
So do you think if i change my thermostat my reduced engine power would stop happening going 20mph!!
IT'S BEEN A WHILE BUT WHAT IS A ERG VALVE. AND WHERE IS IT LOCATED.I KNOW NOTHING ABOUT CARS.
anymore help out there!! need car fixed!!
THE MACHANICE SAY THIS YEAR 03 ENVOY DO NOT HAVE A EGR VALVE..
they say for this year and model car they stop making egr valves. i changed the thermostat anyway because i had a code come up for it to be changed. also on my dash the temperature gage would not reach the middle.now sence i changed it, it in the middle.should i still try what you said. or could it be my ECM. PLEASE NOT THAT.
O.K. my check engine light in nov. then a few days later my reduced engine light came on while driving to reduced to about 10mph had to turn car off,then turn it on drove fine to two minutes then it happened again. it still happens till this day.took it to a local manchanic put it on there machaine they said the code read to change peddle.I did same thing still happing.took it to the gm dealer put on their machine the code said throttdle body. the cleaned that,was not it then they replaced it,was not it then changed some wiring,was not it, now they want to change my ECM.I paid about $1,100 for all this stuff, still not working. and this other job the gm want's me to do is about $800.00.not labor.i cleared all the codes.as can you tell i am a girl that needs this help. should i take it to another dealer. and can i get my money back. and i change my thermostat.
CHANGED THE ECU THAT WAS NOT THE PROBLEM. NOW THEY ARE TRYING THE FAN CLUTCH. THEY ARE AT A GUESSING GAME. COULD THIS BE IT.
On Feb. 15, 2010 i took my car back to get my fan cluthc fixed. This was the problem all along. It kept reading low on their machine but they left that for last because the reading was so low.This was the problem!!!! my car has been running good ever since. It's teh fan clutch!!!!
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