96 7.3 396,000 p1211 check engine light on

batmantech · August 7, 2009

Under full load light comes on, p1211 did ppt fuel pres ok , oil areation ok, icp during koer only goes to 2.0v should be 3.0v plugged each head ipr was same, installed known good ipr same, ppt indicates a bad high press pump unable to build press (also ipr at idle is 500 psi 50% which is high) Has anyone seen anything like this before? Thanks

Bruce Amacker · August 7, 2009

Sounds like a bad HPOP to me. No stalling complaints, just a CEL? IPR is 50% at an idle? Wow! It could be low pressure oil starvation, but probably not. I might pull the plug on the reservoir and look inside just for S&G just after an idle shutdown to make sure it's full.

Good Luck!

Posted Image

batmantech · August 8, 2009

Just finished it was the high pres. pump Now 500psi at idle with 14% ipr thanks good accel no codes Thanks!!

Bruce Amacker · August 8, 2009

14% hot or cold idle? If that's at a hot idle, there might be leaky o-rings on the injectors. IPR command is usually 9-11% at a hot idle, if it's above that there could be "issues", like leaks.

Glad you got it fixed!

Posted Image