Father Stuck on Road Trip Passenger Bank Cutting out 7.3 - Ford Powerstroke Diesel Forum
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Old 11-19-2009, 02:48 PM
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Father Stuck on Road Trip Passenger Bank Cutting out 7.3

Lets see if you guys can start throwing out some ideas here my father is getting stranded on his way from Texas to NY, 4th time he has had to stop now and its getting expensive, and frustrating to say the least.
2000 7.3 6spd with 250K miles. Truck ran flawlessly for the past 40k miles but now the passenger side cylinder bank is cutting or so we first thought. First day it started it was running bad like it was partially missing. Checked all of the Valve cover connections, tested pulling one VC plug, passenger side first, idled the same. Reconnected and then pulled the drivers side and truck wouldnt start at all. After calling a few people from the forum concluded that it was the IDM. Changed the IDM, still same issues. Took it to the Ford dealer and they did a buzz test and contribution test, and 3,5,7,8 came up "bad". The Dealer ended up throwing a bunch of parts at it, new Valve cover harnesses, and flushing fuel system. On the road he goes.

100 miles later the truck does the same thing running like crap, and they limp to a dealer. They check it this morning and #4 and #8 are failing. Tech said they were stuck open, didnt know whether it was mechanically or electrically. But anyways replaces them and they are on the road again, 300 miles later its happening all over again and he is stuck in a Autozone parking Lot in HOPE, AR.

He says it feels like the truck is running on 7 cylinders and he can barely maintain 50mph. Is there a scan tool he can buy to run a buzz test to see if the same injectors come back up?

Any thoughts guys/gals, I feel bad he is getting stranded like every 100-300 miles on a 1600mile trip home.
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Old 11-19-2009, 02:59 PM
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Im not sure but heres a for you
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Old 11-19-2009, 03:26 PM
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Have him listen to the fuel pump on key up, it should be humming and not making a buzzing noise. if it buzzes, its getting air most likely from the regulator/pickup assembly in tank. this will cause unnescessary injector replacement and multiple misfire, and parts tossing!

Fuel pump can be amp probed, should not draw more than 15A while running steady, can also be scoped, should have nice humpback trace

fuel pressure can be checked by tee'n into line on output side of pump, should be 50 psi or better. seein'z how it ran better after they F'ed with the fuel system, i would suspect a fuel delivery issue, but I been wrong a couple times, lol. hope this helps
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Old 11-19-2009, 03:37 PM
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Bump for you
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Old 11-19-2009, 03:59 PM
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Quote:
Originally Posted by Robsr View Post
Have him listen to the fuel pump on key up, it should be humming and not making a buzzing noise. if it buzzes, its getting air most likely from the regulator/pickup assembly in tank. this will cause unnescessary injector replacement and multiple misfire, and parts tossing!

Fuel pump can be amp probed, should not draw more than 15A while running steady, can also be scoped, should have nice humpback trace

fuel pressure can be checked by tee'n into line on output side of pump, should be 50 psi or better. seein'z how it ran better after they F'ed with the fuel system, i would suspect a fuel delivery issue, but I been wrong a couple times, lol. hope this helps

This makes remarkable sense.... will pass it along. thank you!!!!
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