Hi everyone I have a 94 k1500 with a 5.7 tbi.
Every cold start until the engine warms up it runs not good at all. It stumbles and has a obvious misfire with a pop from the exhaust.
Has new cap, rotor, temp sensor, plugs, fuel pump.
I did notice that my truck doesn’t seem to have the high idle that other TBIs have. I notice right from cold start that the rpm’s don’t stay higher and then gradually come down, it just starts and instantly goes down to 650rpm and runs rough until she warms up. Could a bad IAC or something cause this?
What else do you guys think it could be?
I do have a small exhaust leak from the header flange because my shorty headers have a crack. It is before the one O2 sensor, so could that be throwing off my AFR?
Considering getting a reddevilriver tool to hookup to TunerProRT for live data.
Every cold start until the engine warms up it runs not good at all. It stumbles and has a obvious misfire with a pop from the exhaust.
Has new cap, rotor, temp sensor, plugs, fuel pump.
I did notice that my truck doesn’t seem to have the high idle that other TBIs have. I notice right from cold start that the rpm’s don’t stay higher and then gradually come down, it just starts and instantly goes down to 650rpm and runs rough until she warms up. Could a bad IAC or something cause this?
What else do you guys think it could be?
I do have a small exhaust leak from the header flange because my shorty headers have a crack. It is before the one O2 sensor, so could that be throwing off my AFR?
Considering getting a reddevilriver tool to hookup to TunerProRT for live data.