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POWERSTROKE
POWERSTROKE, Ford Mechanic
Category: Ford
Satisfied Customers: 1065
Experience:  FORD DIESEL MASTER CERTIFIED, GAS ENGINE MASTER
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1989 ford f350: ton..a 7.3 diesel engine with automatic tranny with od

Resolved Question:

i have a 1989 ford f350 one ton dump truck. it has a 7.3 diesel engine with automatic tranny with od. i have tried everything to get brakes on this truck 3 new master cylinders all new brake lines from front to back new front calibers new hoses we have bled them and we got a steady stream of fluid coming out and when the truck is not running you have a half of a pedal when you start it it goes almost all the way to the floor and fades the rest of the way
Submitted: 5 years ago.
Category: Ford
Expert:  POWERSTROKE replied 5 years ago.

HelloCustomer/p>

 

Does the truck have 4 wheel abs and is the booster vacuum actuated?

Customer: replied 5 years ago.
it only has 2 wheel abs what does it mean for the booster vacuum actuated.
Customer: replied 5 years ago.
the truck is 4wd if that makes a difference
Expert:  POWERSTROKE replied 5 years ago.
Is there a traditional vacuum booster on the truck (larger round box behind the mastercylinder or are there lines from the power steering pump going to a small block behind the master cylinder)
Customer: replied 5 years ago.
this has a power booster does not run off power steering
Expert:  POWERSTROKE replied 5 years ago.
Ok check the vacuum pump on the front of the engine and make sure its supplying vacuum to the booster, they have been a know issue for failure. To check it just pull the line off the booster and start the truck and see if there is vacuum at the line.
Customer: replied 5 years ago.
we did that there is vacum at the line
Expert:  POWERSTROKE replied 5 years ago.
the booster is probably bad
POWERSTROKE, Ford Mechanic
Category: Ford
Satisfied Customers: 1065
Experience: FORD DIESEL MASTER CERTIFIED, GAS ENGINE MASTER
POWERSTROKE and 4 other Ford Specialists are ready to help you

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