OK I have just completed the driving pressure test and here is what I found:
When accelerate to 2500RPM = 3psi
constant 35 MPH 4 psi then needle moves to 3.5 psi then back up to 4 psi then back down almost like a watch.
@ 1500 RPM same as above 3.5 to 4psi
@ 1000 RPM = 4psi
When driving at...
The fuel pressure was 5 psi at idle. Driving to work this morning my tranny seemed like it was in between two gears and then it it smoothed out. Please tell me this lift pump is not in the tank...please!
Ok just checked the fuel pressure pre fuel filter change and it was 5 psi dead nuts. Post filter change 5 psi dead nuts. Also I just got the tranny services and the technician said I had an ABS code 9. Is there a remote possibility that they are related?
Demographics: tell us about your truck and your ambient conditions:
- Year: 1993
- Truck model and class (ie: c2500) GMC K2500 extended cab
- Automatic or Standard Auto
- Mileage: (indicate miles or km) 157000
Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) Heath Wastegate...