Lifetime Supporting Member
Join Date: Dec 2009
Feedback Score: 0 reviews
The IPR valve solenoid can be heat sensitive. Something about electromagnetic coils - they get weaker when hot and one on its last leg can work when the engine is cold and then not have enough oomph to close the valve when hot.
Set your Mac scanner up to monitor ICP sensor data and IPR duty cycle and watch it when it dies - if the ICP data is going down and the IPR duty cycle is going up - might be a good indication. If when you are trying to restart it, you can't get to 500 psi, that's your problem.
2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM