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Superbob, Senior Master auto technician
Category: Car
Satisfied Customers: 2609
Experience:  Ford Lincoln, Mercury, Seinor Master, diesel certified, mazda certified, ASE Master
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1999 f250 7.

Customer Question

1999 f250 7.3
No low end power
1 to 3 psi @ 2000Rpm Can get up to 15 @Wot
Cant pull 4000 lbs to save its life
Submitted: 4 years ago.
Category: Car
Expert:  Superbob replied 4 years ago.
Sounds like you may have an issue with your turbo! Take off your air inlet pipe between the air filter and turbo, verify that the air filter is clean, then grasp the shaft of the turbo to see if it spins freely when you spin it by hand, if it is ok, lift it top to bottom, side to side, and in and out to see if there is any measurable free play in the turbo center shaft! If all checks out, start the engine with the air inlet off and see if the turbine is respectfully responsive to rpm changes, it is possible that the exhaust side of the turbine has broken off and gone down the exhaust pipe.
Customer: replied 4 years ago.
The turbo has no free play and looks like its in good condition. I also changed the air filter. No change. Could it be a sensor? I will try to verify the exhaust in the morning. Was it common for the exhaust turbine to fail on that turbo(stock)??
Expert:  Superbob replied 4 years ago.

Not common, but has happened! Especially on trucks that are poorly maintained and or with an air filter lid that was not installed correctly! What is somewhat common is debris inside the fuel tank causing the pickup tube to become restricted and not allow enough fuel to be delivered to the engine!

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