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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23001
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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Ford F250: I have a F250 diesel 4x4. It thumps when you first

Customer Question

I have a F250 diesel 4x4. It thumps when you first start it up n while you are driving n it makes the truck go faster. Tires are fine.
Submitted: 1 year ago.
Category: Ford
Expert:  Ray M. replied 1 year ago.
What year is your truck, and is it a standard transmission?
Customer: replied 1 year ago.
1993 manual transmission
Expert:  Ray M. replied 1 year ago.
Does the thump or noise change when you push in the clutch and put it in gear or speed up the engine?