Transmission

Asked by Jul 01, 2016 at 09:30 PM about the 1984 Ford F-150

Question type: Maintenance & Repair

I have a 1984 Ford f-150 4.9 automatic, I
was on the freeway and all of a sudden it
started acting like it was down shifting to a
lower gear! I always use the overdrive when
I'm on the freeway, the engine started to
tacking at high rate, the transmission fluid is
ok, could use some expert advice on where
to troubleshoot first!

5 Answers

217,315

Check the rod/TV cable from the carb to the transmission to see if it hooked up, sometime they come loose or break.

Best Answer

I checked them out they looked ok , do you think it could be a sensor?

217,315

Hard to say until a mechanic looks at it. Being the truck is an 1984 and probably has over 150K miles, I'm thinking it's time for another transmission, because if something internal failed , your doing a rebuild or replacing with a used one.

I have rebuilt the engine and just about everything else on this thing except the transmission. I was hoping that I wouldn't have to but it sounds like that might be the problem. Do you know how much a new transmission would cost, versus a rebuild?

Would the transmission speed sensor cause these problems?

Your Answer

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