[Wreckaboy1]

Long story short, i pulled my motor to re-do the oil pan and a bunch of other stuff. I replaced the CPS since it was out. All fuses check ok, fuel heater, hpop reservoir etc.. all look fine. The tach will not move. I have tried two new CPS"s so I am ruling that out. What else would cause the tach not to move while cranking? I have no exhaust smoke, so the injectors aren't firing. IPR was rebuilt as well. IM confused.

 

[action4478]

How long have you been trying to start it?...

 

[Wreckaboy1]

since sat nite. I cracked the oil lines and i have plenty of oil. Its purely electrical at this point i think. I do get a wait to start light. im going to take my chip out and see what happens next.
I've tried extended cranking and unplugged the ICP with no luck

 

[golfer]

do you have ICP pressure? on a mechanical gauge or scan tool?

If the IPR was rebuilt I would start there...with a new/known good IPR...

if the IPR is (absolutely) good, and the HPOP gear isn't slipping on the HPOP shaft...then it has to be an injector (o-ring or poppet) problem.

take care~

Dave

 

[96P_Stroke4x4]

joe just gave me a call and has his truck running. he said it was the ipr. after cleaning it out and splicing in another ipr connector, it fired right up. good call on the ipr, dave

 

[Wreckaboy1]

Truck is running, although a little lopey for now, but i think there is a lot of air in the system etc.. I have to put the chip back in. Thanks again Dave, you were right on the money!!