cmpbiker wrote:
Oh I was not specific but it will crank like nobodies business. Fairly new red top Optima. Not feeling the battery fix.
New update from the mechanic, more weirdness.
Maybe a new direction. I had them install the old computer to compare against the "new" computer. Old computer will occasional start and run but will not restart. Mechanic started checking fuel pressure, when running there is plenty of pressure. When not starting little to no pressure. I am pretty sure this was done with the "crack the fitting" test.
This could be a fuel delivery issue but none of the codes are showing fuel issues. Not sure how it works but I assume there is a pressure regulating valve on the rail leading to a return. Is this electronically regulated? What would cause intermittent pressure issues?
There is a fuel pressure solenoid attached to the high pressure fuel pump.
A stupid question maybe but does your jeep have the SKIM security system with the transducer in the keys...does the SKIM key symbol flash on the console or stay on permanent?
If so, how did Keith manage to program your junkyard ECM properly....the PCM needs the unique SKIM data...did you send him a spare key for the programming?