Join Date: Nov 2008
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Sorry it took so long to get back to this. Been working extreme hours lately.
Truck is a 2000 Excursion Limited, 4x4, auto, 7.3
While cranking solus reads over 100 rpm, about 2200psi, EPR at about 40 percent. There is fuel in the bowl, it does refill, I have not hooked a pressure gauge into it yet but I will be trying to at some point this week.
Solus says my fuel PW comes up to about 3.9 to 4 ms while cranking, but I still have no audible buzz coming from any injector. I have had three different IDM's in the truck, Every buzz test returns as a pass, but there is no buzz. if I unplug any given injector it will return the code for high to low open for that particular injector.
So I jumped into wiring diagnostic, Pulled the connector off the IDM, and hooked a halogen bulb into pins 14 and 26 (Power and Ground for the IDM) and measured over 12v under load. Have checked continuity between in 2 of the IDM and pin 91 of the PCM, pin 16 of the IDM and pin 96 of the PCM, pin 4 of the IDM and pin 48 of the PCM, and pin 7 of the IDM and pin 95 of the PCM. All have good continuity.
Took my spare IDM's and put them into my 94 just to make sure they were still good after sitting on the shelf, and they all start and run that truck fine.