temp related running problem??
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temp related running problem??
alright the truck runs incredible until it gets to operating temp then it cuts in and out real bad and will die and doesnt wanna start after its warm and if it does start it isnt healthy and it dies very quickly after .. most of you know what
i have already done to the truck and my latest would be IPR O rings and the bb in FPR mod
i have already done to the truck and my latest would be IPR O rings and the bb in FPR mod
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
yep, i heard it running guys. this engine is not running good at operating temp. it sounds like the ICP is all over the place and like its missing a couple cylinders.
Wait for it to cool off and call me then start it. i wanna hear it when its cooled down. i'm still at a loss.
I had him unplug the EOT when it was running all messed up and he reported that it changed nothing. if it changed nothing would the sensor be bad??? i'm not sure what happens when the EOT sensor is bad and tells the PCM the oil is like 1* or something. this truck has new IPR o-rings, ICP, FPR shim, new UVCH, new injector o-rings, and a CPS i believe. this thing has got me baffled...
Wait for it to cool off and call me then start it. i wanna hear it when its cooled down. i'm still at a loss.
I had him unplug the EOT when it was running all messed up and he reported that it changed nothing. if it changed nothing would the sensor be bad??? i'm not sure what happens when the EOT sensor is bad and tells the PCM the oil is like 1* or something. this truck has new IPR o-rings, ICP, FPR shim, new UVCH, new injector o-rings, and a CPS i believe. this thing has got me baffled...
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
Also guys. on his truck the EBPV is unplugged, the fuel heater is unplugged, and the exhaust back pressure sensor is busted. like it's physically busted all up. don't think the EBP sensor makes much difference tho... hopefully someone else has some ideas b/c i'm out of ideas at this point.
Postmaster
Joined: Sep 2007
Posts: 4,195
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From: Medford Oregon
Also guys. on his truck the EBPV is unplugged, the fuel heater is unplugged, and the exhaust back pressure sensor is busted. like it's physically busted all up. don't think the EBP sensor makes much difference tho... hopefully someone else has some ideas b/c i'm out of ideas at this point.
An EOT signal that is detected out of range high or low by the PCM will cause the PCM to ignore the EOT signal and default to a 212°F (100°C) value for engine oil temperature. The CHECK engine lamp will also be illuminated as long as the fault condition exists.
My assumption here is if the EOT sensor is unplugged the above condition exists. Did the CEL come on when that sensor was unplugged? My initial thoughts were since it was heat related, and everything else done to the rig, it probably could be the EOT sensor. However guess that is out the window now.
All the 3 wire sensors are powered by vref +5 volts from the PCM. If the EBP sensor is all damaged up like you indicated I would unplug it and isolate it as a possible cause.
It could be the CPS to cam gear clearance, a heat thing. If it was me and I had no shims I would take some tin foil, fold it and make one for a quick /dirty test.
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Logistics Pro
Joined: Oct 2008
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From: Avilla, IN
WAG, Injector O-rings?
Are you sure that your CEL works?
Maybe the IPR is bad. I know its rare, but the non rare problems aren't the trouble.
Are you sure that your CEL works?
Maybe the IPR is bad. I know its rare, but the non rare problems aren't the trouble.
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Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
i should have told y'all last night that the CEL came on last night when it started running like crap. i don't know if it was before, but now it is. Thanks for y'alls responses. i simply haven't been able to think of any other reasons this truck would be doing this.
Hussler, the CEL was on before the EOT sensor was unplugged and it changed nothing in the way it ran. i would assume if it defaults to 212* then there shouldn't be any problems since nothing changed when it was unplugged and it defaulted to 212*. You are also correct in that it could be CPS air gap.
So do this, check fuel pressure when running badly, if fuel pressure is good, then move on to checking oil related problems like check HPOP rez level when running badly and stuff.
Hussler, the CEL was on before the EOT sensor was unplugged and it changed nothing in the way it ran. i would assume if it defaults to 212* then there shouldn't be any problems since nothing changed when it was unplugged and it defaulted to 212*. You are also correct in that it could be CPS air gap.
So do this, check fuel pressure when running badly, if fuel pressure is good, then move on to checking oil related problems like check HPOP rez level when running badly and stuff.
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phew this is alot to take in , but what Im getting is run it til it runs like poop then check the fuel pressure? and iv had the codes scanned twice at advanced and from autozone and everytime it cam up clear which I thought was weird
Hotshot
Joined: Aug 2006
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alright the truck runs incredible until it gets to operating temp then it cuts in and out real bad and will die and doesnt wanna start after its warm and if it does start it isnt healthy and it dies very quickly after .. most of you know what
i have already done to the truck and my latest would be IPR O rings and the bb in FPR mod
i have already done to the truck and my latest would be IPR O rings and the bb in FPR mod