97 250 auto
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97 250 auto
Hello to all, I am new but I have an old problem. The truck in question lopes real bad hot or cold on start up. I have 170K on the engine, I replaced all injector O rings, my IPR reading is 12 to 13% at hot idle. All injectors appear to have equal oil exhaust out of the oil spouts, cyl.contribution is ok, truck has great power for a stock truck, replaced cam sensor, replaced IPR valve with a known good IPR with new seals, each head will start the engine on 4 cyls. when isolated, does anyone know what the IPR reading should be when the HIGH Pressure oil pump is dead headed? I can't seem to fix this truck, I also checked for oil aeriation. Dello 400 15/40 is in the truck. Any Ideas ?
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From: Levittown
Originally Posted by tjbeggs
you probably need a transmission range sensor. common lope idle cause if it does it hot and cold. TRS is on the driverside of the tranny at the shift cable/arm.
Bill
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tjbeggs, you are 100% correct. I found the problem yesterday about 3:30 and could not believe it. I did not have any codes but I inadvertantly placed it in neutral an cranked the engine and / smooth idle. I put it back in park and lope. While it was lopeing I shifted to neutral and smooth idle again. Replaced defective trs and everything is ok, thanks for the help everyone.
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