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Hi all, I recently finished my project truck; however, I am having some issues getting it to stay running. It has a hard time starting and when it does start The truck will fire and die unless I keep my foot into it at about 1500 rpms and then it will run for 60 seconds or so. After it dies it wont start unless it sits for a minute or two and i cycle the key. Here's what's been done. Rosewood diesel 160/80 injectors, adrenaline hpop, t4 mount with s366 turbo and intercooler, Hydrachip with tony wildman tunes. And irate diesel full electric fuel system . The tach moves while cranking and I have smoke coming from the exhaust. Fuel pressure at the regulator is at 65psi while cranking. hpo res is full Icp is 53% while cranking and injection pressure is 3445psi.
Been cranking for hours now. charged the batteries twice and keep the chargers on during cranking. I'm having a hard time trying to believe there is still air in the system. what should I see ICP at? I thought that 3400psi seemed high?
3400 is a lie . You will never see that cranking . The ICP sensor is biased . Try unplugging it .The fuel system has air , so does the oil . When it runs let it idle till you can give it fuel
The IPR number is what the PCM is calling for . Yes , the IPR could be sticking . THe PCM commands the IPR based on what it sees from the ICP sensor mainly. It uses TPS input as well . 3400 would be WOT . . You are using the go pedal may be why the ICP is high . We normally start the engine at idle .
Well i just did some more diag, and found the IPR not moving at all. Put 12 volts and no movement or sound coming from the IPR. Will pick up a new ford one tomorrow and let you all know how it goes
Well i just did some more diag, and found the IPR not moving at all. Put 12 volts and no movement or sound coming from the IPR. Will pick up a new ford one tomorrow and let you all know how it goes
With the key on there is 12v to the IPR continually . The PCM sends ground to it as needed in a pulse . .
With the key on there is 12v to the IPR continually . The PCM sends ground to it as needed in a pulse . .
Thanks that's good to know for future use. I could not get the IPR coil to do anything on the bench so I picked up a new ford IPR today hooked up my scanner and cranked the truck for maybe 10-15 seconds icp went to 825 and truck fired right up! I let it run for maybe 10-15 minutes before the rain came and had to call it a day. One thing I thought was interesting that the old coil was measuring 10.8 ohms same as the new one but I couldn't get it to energize. Can't wait to wrap up the last few things and drive this truck with the bigger sticks in