First, thanks for this web site and all the information.
1999.5 F250 7.3 starting stalling while going down the highway. Had this before and replaced the CPS. Run good for 2 days. Died at the redlight today. Cranks right back up and drove 30 miles home with only 1 slight cut out.
Going to replace the IPR valve once I get off work.

Am I going in the right direction for fixing this problem?? Any thing else I need to check or look for?

 

where did you get that cps ? you could have a bad one. i would only get one from the dealership. the auto parts box store's are not always dependable.

 

I'd look at this before IPR. Fast, easy and free to check.

https://www.ford-trucks.com/forums/1...tch-short.html

Also check the 42pin harness at the valve cover for chaffing. Do everything before IPR!!!

Check out the ScanGauge II as well. This OBDII gauge will display every parameter the PCM monitors and displays (4) parameters at a time (as well as read/clear DTC's). This would easily diagnose an IPR/HPO issue. Retail $160 IIRC.

Its no AE, but will answer almost all of the same questions.

 

Thanks a bunch skyskijason- I will check out the wiring when I get home for work. I always like the easy things first. I will post if I find something tonight.

 

Bought the CPS from the stealership parts house. That is why I can't figure out what is going on.

 

I know of a ford grey cps failing as it was leaving the dealership. it didn't even make it a mile!
if the cps fixed it the first time and it is acting identical could be the cps again or associated wiring and when you changed it you moved the fault in the wiring enough to make it work for a while.
also the fuel bowl heater can be an intermittent short with out blowing the fuse.

 

I will try out- dang IPR is $215.00- that is a lot of beer money or fishing trip!
Thanks for the info- all is helpful.