Question about 1986 Ford F150 SuperCab

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I have a 86 F150 5.0 EFI. AOD Trans. 2 problems have started at the same time. The trans doesnt shift correct. It wont shift out of 1st until I hit about 20 to 30 unless I let off the gas and shifts late in the rest of the gears it also down shifts to easly. Next prob. It running a little ruff at a idle but not to bad but when I try to hit the gas it just feels like the motor is being held back runs ruff just no power and the hole truck kinda shakes. Now for the very long list of parts I have already replaced. Idle air control sensor, knock sensor, pick up coil, control module, wires, plugs, cap, rotor, air charge temp sensor, thermo temp sensor, Now the cat was also stopped up I think so I just ran a peice of rebar thru it for a test. HELP

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  • achiltx Aug 28, 2010

    I did change the filter and fuild and it wasnt burnt and no medal in the pan.

  • achiltx Aug 28, 2010

    Isnt there a shift sensor bolted to the top of the trans case. There is some type of switch on top of the trans. When it shifts it shift hard. I did change the filter and no metal in the bottom of the pan

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That sounds like a transmission going bad to me.If it is shifting hard/winding out,maybe herky jerky too.With the rough running,truck shaking,and rough idle,it very much sounds it.Check the transmission fluid.Let it run for 5 minutes,leave it running and do at least 4 or 5 dips with the stick.If you see anything other than fluid such as metal chips or flakes,that is a definite indicator.If you do decide to replace the transmission,it is best to buy a new one,if one is available for your year.I have seen many people have disappointing results with used or rebuilt ones.You should call a couple shops and ask for their opinion,get estimates from different shops.NOT AAMCO.Someone is always willing to give a free opinion over the phone because it helps attract business.Sorry you already replaced all that stuff,but if you buy a new tranny,that truck will go another 20 years I bet.Good luck! Greg

Posted on Aug 28, 2010

  • Greg McCarthy Aug 28, 2010

    That is a very good possibility.Cheaper than a tranny too.Sorry I didn't mention that at least.It should be a speed sensor or something that tells what the RPMs are for shifting so it doesn't wind out.No metal is a great indicator too.Sorry about that.If you decide I wasn't enough help or did not solve it properly no hard feelings.I am not in it to make as much money as possible.I answer at least 10x more freebies than $ ones.Good luck! Greg You must be in the south or out west to have a 1986.

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