Intermittent problem
truck runs great nice power....then decides to start hesitating from 2000rpm to 2500 rpm sometimes a backfire..... then takes off like a rocket once it hits about 2500 rpm.
also when this hesitation starts it will start idling badly.
it will do this if cold or hot.....
things checked
1. TPS....ok
2. IAC....ok
3. MAF....ok
4. O2.....ok
5. all sensors on water pump replaced...
6. all vacuum leaks fixed....
NO CODES CEL flashes like it should with no codes
i have FSM and have been going through them one at a time.
when it wants to run nice it runs perfect like new truck.....
HELP!!!!!
truck runs great nice power....then decides to start hesitating from 2000rpm to 2500 rpm sometimes a backfire..... then takes off like a rocket once it hits about 2500 rpm.
also when this hesitation starts it will start idling badly.
it will do this if cold or hot.....
things checked
1. TPS....ok
2. IAC....ok
3. MAF....ok
4. O2.....ok
5. all sensors on water pump replaced...
6. all vacuum leaks fixed....
NO CODES CEL flashes like it should with no codes
i have FSM and have been going through them one at a time.
when it wants to run nice it runs perfect like new truck.....
HELP!!!!!