High Pitch Whine When Driving Over 25 Mph

Complete Transmission Repair Cost Guide Transmission Forum – Ask an Expert Ford High Pitch Whine When Driving Over 25 Mph

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  • #377
    Administrator5
    Keymaster

    I am posting this here for Christofor who submitted this using the comment form.

    Hello yes, I have a 2001 ford escape ext AWD. I lost my third gear and just had a full transmission rebuild done on it. Leaving the shop, I start to hear a high pitch whining coming from the transmission. This whine only appears when I go over 25 mph and goes away when I am under 25 mph. The shop that i took it too said to drive it around, but i am worried that I might be messing up the new soft parts that i had just put in the trans. It does not make the noise when I am in neutral or park, just raising rpms. This noise did not happen before the shop took my car, what do you think it might be?

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    #656
    reinier1
    Participant

    Hi Admin,
    This problem has probably been resolved after more than a year, but I have some comments for the benefit of other members with similar problems.
    1.) No transmission should have noises of any kind after having been worked on. Whining noises in particular, are mainly the result of mixing old and new parts that do not mesh well together.
    2.) It happens sometimes that technicians do not replace complete roller or needle bearings when they rebuild a transmission. Using new roller/needle cages on old and worn outer bearing races can cause whining at cetain speeds.
    3.) Transmission noises do not go away by themselves, or by “using it for a while to allow it settle down”- if a newly-worked on transmission is noisy in any way, it is defective in some way, and it must be repaired under warranty conditions.

    Hope this helps.

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