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95 PSD wont start when hot
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<blockquote data-quote="ChopTop84" data-source="post: 1478390" data-attributes="member: 19210"><p>OK, you can rule out the CPS. If your tach moves at all (or goes up to a steady RPM) then the CPS is working, and your problem more than likely is in the High Pressure Oil system.</p><p></p><p>Just for shits and giggles, check the wiring going to your ICP sensor. It should be on the drivers side head, toward the front. That sensor works in tandem with your IPR to regulate the high pressure oil. Unplug it, look over the wiring, look inside the sensor and make sure there is no oil coming up thru the sensor. Maybe give the little connectors inside a squeeze with needlenose plyers and then plug it back in. Ive seen that connector cause weird shutdowns in the past.</p><p></p><p>But my guy feeling is either your IPR is sticking/dirty or your O-rings are gone. Either way, your not making the oil pressure needed to run the truck.</p><p></p><p>I dont think its a fuel pressure issue, as these things will run on like 1psi of pressure, but wont make any power. But to rule out fuel pressure issues, open the drain valve on the fuel bowl (lever on the side of it) while someone cranks the key. You should get a high pressure blast of fuel from under the truck. If you put a piece of rubber hose on the drain line, you can catch the fuel in a can instead of spraying the ground. The drain should be a metal tube on the passenger side of the block, somewhere close to your ICP sensor.</p></blockquote><p></p>
[QUOTE="ChopTop84, post: 1478390, member: 19210"] OK, you can rule out the CPS. If your tach moves at all (or goes up to a steady RPM) then the CPS is working, and your problem more than likely is in the High Pressure Oil system. Just for shits and giggles, check the wiring going to your ICP sensor. It should be on the drivers side head, toward the front. That sensor works in tandem with your IPR to regulate the high pressure oil. Unplug it, look over the wiring, look inside the sensor and make sure there is no oil coming up thru the sensor. Maybe give the little connectors inside a squeeze with needlenose plyers and then plug it back in. Ive seen that connector cause weird shutdowns in the past. But my guy feeling is either your IPR is sticking/dirty or your O-rings are gone. Either way, your not making the oil pressure needed to run the truck. I dont think its a fuel pressure issue, as these things will run on like 1psi of pressure, but wont make any power. But to rule out fuel pressure issues, open the drain valve on the fuel bowl (lever on the side of it) while someone cranks the key. You should get a high pressure blast of fuel from under the truck. If you put a piece of rubber hose on the drain line, you can catch the fuel in a can instead of spraying the ground. The drain should be a metal tube on the passenger side of the block, somewhere close to your ICP sensor. [/QUOTE]
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