Jim Warman Posted February 27, 2011 Share Posted February 27, 2011 So... it's -28C yesterday AM and I get the keys to a no start that's been out back for a few days. Push it into the shop, plug in the block heater and hook up a charger. Not quite an hour later, I hook up IDS and watch my "no start" PIDs as I crank the engine.... 48.5 volts.... 4.5 volts.... 600 and some PSI ICP.... FUEL_PW is like 13ms or better... hmmmm - IPR is 84% and cranking rpm is 108... Motor and oil are pretty cold yet... could IPR be that high because of low engine cranking speed? We have already decided that this motor is plain wore out and the customer is trying to keep it patched together while they wait for the proverbial new truck (the one that never seems to show up on time). Left it to warm up for a few hours while another, more pressing job was at hand.... Cranking rpm is better.. closer to 150... IPR is still 84% but FUEL_PW is zip and ICP is running a close second at 40 PSI. When oil gets that cold... it can do some funny things..... Oh, yeah... turned out to be a stuck IPR..... Quote Link to comment Share on other sites More sharing options...
mchan68 Posted February 28, 2011 Share Posted February 28, 2011 Low ICP psi no-starts cold, USUALLY end up being a faulty IPR valve. Quote Link to comment Share on other sites More sharing options...
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