Re: 97 7.3 e4od torque converter unlocks every now and then
So do you have two problems, one that it won't stay locked, and two, it's shifting in and out of overdrive?
You need to get the codes read. The flashing overdrive light means codes have been stored to tell you where to start looking. Without the codes, all I can tell you is that something is wrong. The places that read codes free CANNOT read these codes. You need a good independent shop or a Ford dealer.
Former Ford Automatic Transmission Engineer
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