I have a transaxle warning light. A diagnostic on my 2000 cougar said NTT malfunction. What is that?

Q: This issue is causing overdrive to go off and gives it shift shock and hard shifting in lower gears. No slippage of tranny. It has fluid.

A: "NTT" may be the error code assigned to this problem. You may find it if you can find a book listing all the error codes, or you may have to take it to the dealer or a repair shop. Transmission work isn't cheap - major repairs can run well into 4 figures. It's usually cheaper to catch it early and fix it before it turns into something major. Off to the Ford garage with you, I think.

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