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NO SMOKE ! FIRST IT STARTS! THEN AFTER ABOUT 5 TO 10 MINS RUNNING IT WILL JUST DIE. It will not start until after it cools or I change the CPS. Which at this point its cool anyhow. But even with another CPS it goes through the same cycle! Runs for 5 to 10 mins. Could the both CPS be bad or could something else be causing this? Could the IPR valve solenoid cause this?:
02' 7.3L running superchip...Ok this seems like a common issue. Sometimes the truck cranks and runs fine...sometimes it turns over but will not start. I removed the superchip...still not start, changed CPS and it starts...next day will not start....finally i tried it again and it starts! Code was P603(CPS). Next day it started a I drove it about 5 miles it died and wouldn't start, pullled it home after checking it out and it cooling off..it started! I have changed the ICP. I have changed the CPS twice. It keeps doing the same back and fourth. Each time I change the CPS it will crank then later not crank! Maybe both CPS or bad? Any ideas?
thanks in advance for your help!
Last edited by JCW; 07-28-2010 at 05:19 AM.