Discussion Starter · #1 ·
Ok, I inherited a 1995 ford super duty turbo diesel 7.3 because it needed an hpop replacement. I did the replacement and the truck ran ok, maybe a little short on power but it blew grey smoke fairly bad. So I rebuilt all 8 injectors thinking that it was oil leaking past the seals. While inside I found 5AA injectors 2A injectors and 1AD injector, which I am sure isn't right, so I replaced the 3 odd balls with AA injectors. The smoke issue didn't disappear so I thought it might be that oil was being introduced through leaking seals in the turbo, so I rebuilt the turbo installing a wicked wheel while I was at it. Now that that is all done I am having a massive loss of power after a minute or two of driving. This coincides with the check engine light coming on. If I turn off the truck (while running I just cycle the key off and then on) the check engine light goes away and power returns for a minute or two till the check engine light comes on again. I have also disconnected the egbpv and jb welded the valve open and disconnected the wiring. In the plug I soldered 3 resistors reading .451 on the 2k scale on my meter. I read that you need 460 ohms of resistance for the egbpv to not throw a code and hope that's close enough. I have a very minute exhaust leak on the y before the turbo which I am addressing, but I don't think that is the problem at the moment. Any help would be greatly appreciated. A couple of things I read about are the ipr valve might have failed, the undercover wiring harness or that the computer might need to be programmed with new injector IQM codes? A little help I'm possibly diagnosing where to start or how to test rather than just throwing more parts and labor into this would help a lot. Thanks in advance to all of the great knowledgeable people on the site the feedback I have found on here that has been provided to other members has been a great help already.