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mike switzer
mike switzer,
Category: Transmissions
Satisfied Customers: 710
Experience:  lead diagnostic tech at Aamco
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I am having a transmission problem. Can you help? I checked

Customer Question

Hi, I am having a transmission problem. Can you help?
JA: When was your transmission fluid last checked?
Customer: I checked the fluid and it is right up.
JA: What is the model/year of your Ford?
Customer: I have a 2000 F550 with 75,000 miles. The transmission shifts great in first, second and third but when it shifts in to overdrive the RPM's go up but the speedometer goes no where.
JA: Are you fixing your F550 yourself? What have you tried so far?
Customer: I employ a gentleman who is really handy with mechanics. We have not really tried anything yet as we have only just come across this issue. The overdrive light is flashing and has been for quite some time. The button works but when in overdrive there is slipping going on
JA: Anything else you want the mechanic to know before I connect you?
Customer: I think that is all
Submitted: 9 months ago.
Category: Transmissions
Expert:  mike switzer replied 9 months ago.

this is a common issue on these transmissions and will require a rebuild. the band that controls the overdrive fails