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Old 08-17-2010, 08:12 AM
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Question bad water pump causing truck to die??

some of you may know i have been having a problem with my truck dieing after running it for short periods. i have come up with an idea that i would like some input on. monitoring oil temp and coolant temp with auto engenuity i noticed they are both slowly getting into the red 325 on coolant and 150 on oil before the truck dies. with the temp gauge on the dash not going past normal but the engine block and hpop reservoir getting extremely hot to the touch also the radiator never gets hot and no pressure build up on the hoses. obviously the water pump and thermostat needs replacing. but will this cause the engine to just shut off? oil getting hot thinning out and hpop becoming ineffective or IPR valve malfunctioning due to the heat build up? when it does die the icp drops down below 500 psi then like 350 , 175 till it shuts down let it sit 15 mins and it fires right back up. and when it is running it runs great.

hpop reservoir is staying full oil is clean and full coolant was full till i drained it yesterday

any ideas ? ? ?
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Old 08-19-2010, 12:16 PM
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Old 08-31-2010, 10:20 PM
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Ok Its not the pump changed the thermostat and temperatures are all normal now but the truck is still dieing after about 60 miles of driving. Checked again with auto enginuity and I have 75 pounds high pressure oil while cranking and a no start. I checked tgr oil again ( topped off before the last drive) and its showing around a gallon over full. Diesel in oil? It doesn't smell like fuel but I've never mixed the to and then smelled it before. I'm planning to change the injectior o-rings and the #5 injector (failed contribution test) and oil. Then see what happens. Any other ideas?
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Old 08-31-2010, 10:45 PM
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so hpop psi is 75??????????


i was gonna say tstat but you got that already. fuel in water? change the fuel filter?
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Old 09-02-2010, 06:02 AM
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Quote:
Originally Posted by Jarrod B View Post
so hpop psi is 75??????????


i was gonna say tstat but you got that already. fuel in water? change the fuel filter?
no fuel in the water.. fuel filter is new. oil was new and at proper level until after this last run. HPOP psi drops to 75 after running it about 60 miles pull IPR and clean it let engine cool off i'll get another 60 out of it but the last time it died i gained over a gallon of fluid in my oil and its not water to it has to be fuel only way i know of it can get there would be the rings or injector o-rings the engine runs great when its cold my #5 injector failed the contribution test and i'm getting some whitish smoke.. so i'm going to change the injectore o-rings and the #5 injector this weekend fill with fresh oil and try it again.. wish me luck
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Old 09-02-2010, 01:56 PM
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whats your icp at idle and cranking?
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Old 09-03-2010, 09:26 AM
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at the moment its not starting and cranking like i said is not going over 75
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Old 09-03-2010, 09:51 AM
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The min should be around 500psi at crank. Anything under it the pcm wont let the engine start.
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Old 09-05-2010, 03:01 AM
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that is true but do you have any idea why if i pull and clean my new IPR it will fire up with ICP at 750 idle and run great for around 60 miles before it stumbles and dies. Sometimes it will refire and idle most times it will not till it cools off and i clean the IPR again. I have yet to actually find any trash in the valve but something has to be sticking it open. any ideas?
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Old 09-05-2010, 02:02 PM
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What are you doing to clean it? My last one was not opening enough and built too much pressure.
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