loses power when warmed up
#1
loses power when warmed up
hey blazer owners. i have a 97 blazer. 4.3 6 cyl. it has been good to me until recently. i have been having trouble it runs great when i first start it and go. but as soon as it warms up it starts losing power. i have changed everything i can think of on it. i got it to run better but still have a power loss. its not as bad. i changed the fuel pump,filter,regulator. changed cap rotor plugs. replaced all the sensors. done compress, fuel, and emiss. checks. now i'm going through tne wiring. does anyone know what could be wrong. i dont want to get rid of my blazer. please help
#5
MAF might need a cleaning as well as the IAT (intake temp sensor - that lil plug in a grommet in the intake beyond the MAF) or the wiring is fubar on either.
Maybe the MAF wiring got too close to the exhaust?!
Check fuses as well for them.
Maybe the MAF wiring got too close to the exhaust?!
Check fuses as well for them.
#7
checked all o2 sensors. found 2 bad sensors #3 and #4. going 2 replace today. also found wiring to maf and iac bad. repaired that. seems 2 run better. as of now seems like it is running in limp in mode. hopefully o2 sensors take care of it.