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Power Strokes
7.3 Aftermarket
Diagnosis Help
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[QUOTE="TARM, post: 1043919, member: 578"] Before you throw money at it first at the very least diagnose the parts you are planning to replace. To rule out the wiring from the IDM all the way to the injector soleniod pull the IDM connector and OHM each of the connections and test the ground. You should get 2.8-3.6 but the lower end is considered spec. Here is the instructions with diagram [URL="http://www.gbreman.com/techbulletin_103.html"]http://www.gbreman.com/techbulletin_103.html[/URL] What you should look for is one bank or individuals that are way off the others. If there is a dif say 2.8 and 2.9 that nothing. But if I got one bank 2.9 and the other 3.5 regardless of it still being in spec I would be checking or replacing the later. If they all come back good it is just wasting money to buy new UVCHs. You can also check the wiring coming out of the top harness connection where its going over the valve cover. Disconnect and check it carefully. Honestly though if you had IDM issues you would be getting the IDM code even if it was intermittent it would stay logged. IPR going up is starting to sound like you might have o rings going out. There has been some orings that seem to be a defective lot as a number of people with fairly new injector installs have had torn orings. Put to some into the oil rails and listen for where its pissing out may help to find the injector in that case. Honestly though if its more than one I would replace all 8 of sets. One can be written off as bad install but a few doubtful. [/QUOTE]
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