Ford F150 Only Shifts at High RPMs

Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
    Posts
  • #9529
    Administrator5
    Keymaster

    My 96 ford f150 2wd automatic transmission will only shift at the highest shift points. Not slipping but goes neutral at lower speeds and have to rev way up to reengage. Any thoughts? Just started after a line leak. Repaired and refilled and this starts. Also just rebuilt entire top end of motor. May need vacuum lines repaired as many were brittle and broke. Tried my best to patch them

    Need a replacement transmission? Quality transmissions are hard to find. Free estimate to your email.

    #9531
    Administrator5
    Keymaster

    Nuisance problem with my 2005 Ford Explorer 4.6 V8 and 5R55S transmission. Shifts occur at uncommonly high RPM. 2000 to 2300 Rpm under moderate, normal acceleration. Difficult to ease it along to get a shift at 1500 rpm.

    Another problem is an exceptionally touchy and erratic throttle response (especially bad after initial engine start and transmission engagement) The car has prox 85000 miles. Concurrently owned a 2002 Exporer Ltd with same engine and trans with 185000 miles and no similar problem

    Any ideas on potential causes of the problem and how to diagnose and repair or reprogram?

    #9547
    Hostgator
    Member

    At this point, we will have to shift our focus from mechanical and other problems to diagnostic work. Both of the problems are remarkably similar: each vehicle has scream up to shifting speed before it will happen. This means that a sensor or control module is sticking and thus preventing the transmission from shifting correctly.

    In order to determine where the problem is, you will have to have a complete diagnostic run of each vehicle with the proper OBD-II diagnostic software. The printout will point to the general area where the problems exist.

    If you are lucky, Ford, whose diagnostic software is very detailed, will tell you exactly where the problems are and will then indicate the devices that should be swapped out or reprogrammed.

    Once you have the results, be sure to have the proper sensors replaced (throttle positioning, quite possibly and maybe the Mass Air Pressure), plus a step-down sensor or two. This should cost under $600, while any reprogramming may add another $150 or so to the cost.

Fair Replacement Transmission Cost by Vehicle

  1. Use the Year / Make / Model lookup tool to determine what transmission your vehicle has.
  2. [transtar]
  3. Find your transmission model in the table below for fair prices from reputable suppliers. Also fair labor cost for local installation at a local auto repair shop.

  4. Get a free estimate on a remanufactured transmission by email.

Fair Remanufactured Transmission Price Ranges by Transmission Model Updated May 1, 2018

transmission repair cost
Download Replacement Transmission Cost Guide PDF
Viewing 3 posts - 1 through 3 (of 3 total)
  • You must be logged in to reply to this topic.