7.3 no power until warm (not exhaust back pressure sensor) - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 06-13-2013, 01:54 PM Thread Starter
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7.3 no power until warm (not exhaust back pressure sensor)

Hi Everyone, I am posting this for my Dad. He has a 1997 F-250 7.3L. Lately he has been complaining of a real lack of power from his diesel. He says that when the truck is cold (he always warms it up) it has a complete lack of power, and it feels just like his rear brakes are stuck on. Once the truck reaches normal operating temperature, it "takes off" and goes back to normal with tons of power. He took it to a diesel shop and they replaced the Exhaust back pressure sensor, and it didn't do a lick of good. He doesn't want to take it to the Ford dealer and have them "experiment" on it to try to find the problem at over $100/h labour. Any ideas out there. Many thanks in advance....
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post #2 of 5 Old 06-14-2013, 01:11 AM
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Try unplugging the ebpv harness, could be sticking closed longer than needed

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post #3 of 5 Old 06-16-2013, 06:34 PM Thread Starter
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I just talked to him. He says that he had all of his injectors replaced a year ago. (50,000 kms ago).
He also changed his fuel filter 6 months ago.
He reiterated that it feels like the brakes are on, or that it is starving for fuel.

I talked to him again and he said that he cant get the truck to go past 60km/h until it reaches full operating temperature, and then it is fine.
Any other suggestions?
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post #4 of 5 Old 06-16-2013, 08:45 PM
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Try unplugging the ebpv harness, could be sticking closed longer than needed
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post #5 of 5 Old 06-16-2013, 08:54 PM
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Hook up a scanner and see what it's doing while it't cold. On my 00, it will limit ICP to 1500 psi till I hit 150* water temp which makes it feel slow. But it could be anything, torque converter not locking up, dirty oil or even a stuck brake.

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