03 Envoy low power fault

[bigdog12]

Hello I have a 03 envoy,sometimes engine will rev high,shut down to low power,not rev up,not shift correctly,had at shop 6 weeks they were supposed to check throttle motor,sensor,wiring harness etc.I have replaced acc. pedal and it will seem to be better for a month or so.Im running out of patients and money to spend at the shops,what should I try next? Any help will be greatly appreciated Thanks

 

[bigrodrosin]

Hello I have a 03 envoy,sometimes engine will rev high,shut down to low power,not rev up,not shift correctly,had at shop 6 weeks they were supposed to check throttle motor,sensor,wiring harness etc.I have replaced acc. pedal and it will seem to be better for a month or so.Im running out of patients and money to spend at the shops,what should I try next? Any help will be greatly appreciated Thanks

i have this same problem with my wifes car, when she took it to the shop they wiped out the throttle body with a rag and said its a common issue? problem solved, hasn't returned.

 

[Molson02536]

Hello I have a 03 envoy,sometimes engine will rev high,shut down to low power,not rev up,not shift correctly,had at shop 6 weeks they were supposed to check throttle motor,sensor,wiring harness etc.I have replaced acc. pedal and it will seem to be better for a month or so.Im running out of patients and money to spend at the shops,what should I try next? Any help will be greatly appreciated Thanks

Common for the the throttle body and IAC to get carbon up and throttle body cleaner will address the issues 955 of the time.

Just follow the instruction on the can and keep us posted.

Molson02536

 

[bigdog12]

03 low power

Well I took throttle body off and cleaned,also cleaned the idle control valve.I also checked what I can replaced acc pedal,and still get p1280,p1275,and p1271 faults,trying to find throttle body GM dealer said they are on back order.If anyone has anymore info please let me know. thanks