05 F350 6.0 AT no start hot

piekar · March 30, 2011

I have 730 psi icp, 15% ipr, ckp and cmp sync, during cranking I have limited diagnostic tools right now but any info would be a great help.

Thanks

lmorris · March 30, 2011

Typically cranking you should have 1500 PSI ICP and around 45% IPR duty cycle. The 730 ICP with 15% IPR tells me you have a possible faulty ICP sensor and the PCM may be ignoring the signal. Clear any codes and try unplugging the ICP sensor and retry. IPR should go up, it may even start. If that is the case carefully inspect the ICP connector if it looks good try a new sensor.

If you had a leak in the system the IPR% would be at 85% cranking as it tries to bring up ICP.

GregH · April 2, 2011

+1 on the faulty ICP sensor. Check it at KOEO, should be .24 volts and 0psi.

If the seal or the plastic separator are missing I'd recommend a new connector. In fact, it's probably good insurance to sell a connector with a sensor if either are bad.

Jim Warman · April 2, 2011

The ICP_PRESS PID is there for your convenience... If you are going to pay close attention to something, make it the ICP_V PID.

FWIW... ICP_V is the actual sensor reading. ICP_PRESS is a computed value. If the PCM doesn't like ICP_V, it will insert a pressure reading it does like.... Everybody has to love a computer that will make shit up....

And if you think that is funny, wait until you take the EcoBoost course.