Have been going for nearly 6 months now with no problem, only hing is the idle fuel rate is a bit low according to what it should be. But no problems with the truck and all the codes I kept getting before I changed the OS is now gone.
After the OS change everything has been going fine, truck runs good no codes or problem.
But, there is always a but, my idle fuel is at 4, should I try a bump to get it a little higher? what are the consequences of leaving it as is?
Thanks
So I ended up getting a used pump cheap and took the optical sensor out of that and stuck it into the pump in the truck and all codes disappeared except the 16. Have just under 6mm2 of idle fuel and it runs perfect now.
Took the optical sensor from my pump and checked it, the electronics...
Ok tested the OS and CPS, there is no change in how it behaves or what codes I get with OS plugged in or unplugged. With the CPS unplugged and Os connected there is no start.
Reading the voltage from the ECM says 13.5Volts on battery voltage with engine running and 1.3 Volts on the Voltage...
I have now gone through the DTC checklists for the most common codes I have and need some help with the results.
First DTC 17 &18
checked for 5 volts on terminal A on the optical sensor harness and valid ground on D both checked out.
For 17 disconnected shutoff solenoid and checked voltage on...
The alternator sounded plausible so I tried removing the cables from it and took off the belt to see if that made a change but no joy.
Was wondering if the TPS could have something to do with it as on the last trip it kept ticking at 1500 rpms, had to brake and gently tap the throttle before it...
Took off all the grounds today cleaned and ground everything down to bare metal, also added redundant grounds so each ground point is now attached to two other ground points in the hope if one of them is bad it will jump to another and still work.
Still had the problem with long crank on startup...
I keep getting pump and other codes and need some help figuring this out. The truck is a 95 K1500. Started out earlier this year with first a no start and then hard start with pump codes, ran the atf through the pump a few times and it cleared and worked fine for a short time and then it started...