i put a new cam sensor in didnt help somtimes starts somtimes dont when it does it might run 5 mins maybe 30. when it does die let it sit awhile it will start. keep getting keep alive memory code. could it be the ipr

 

When it doesn't start is it hot or cold or doesn't really matter? Any smoke when it doesn't start? Any reading on the tach? Does the wait to start light come on all the time?

The KAM code is nothing to worry about. Its normal if there is a chip or programmer installed.

 

Anything is possible with intermittent faults, but I doubt it's the IPR

p0603 Keep Alive Memeory (KAM) code is common.
But you may be losing power to the PCM.

Possible causes:
Battery or PCM has been disconnected
Battery cables loose or poor connection
Battery discharged
Open in KAPWR circuit (Keep Alive Power)
Blown fuse - Is Battery voltage present on both sides of the fuse? (5A MINI Fuse 2 on F-Series or Fuse 27 on Econoline)
PCM

Check for other codes:

Have it scanned with a good scanner. Most "Code Readers" will not give you the info you need. A recording scanner needs to be hooked up when it fails.

CHECK FOR VOLTAGE TO PCM

Back probe the PCM connector KOEO. Check the voltage between PCM Pin 55 and ground Pins 25, 51, 76, 77, 91 and 103

If B+ is present on all pins then put her back together CLEAR codes, RERUN test, If it happens again or the code comes back REPLACE the PCM.

If B+ is not present on an one of them then REPAIR open circuit.

 

i messed up the truck im working on is a 95. the start light comes on and cycles good. it dont seem to matter if its hot or cold. check engine light dont come on but i will get codes and when it dont start the check engine light is on KOEO. when i turn the key on on the check engine light goes off it will start. thanks for the diagram it will come in handy cause this morning my scanner wouldnt connect and its a MAC scan tool