Trans Problem
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Joined: Nov 2006
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Trans Problem
I just got a 1986 f-150 and I'm trying to get the kinks out before I start working on it...The truck has 89000 original miles but has been sitting for a while...The trans shifts fine untill it runs for sometime and gets hot..Then it wants to slip and change to soon...Could it be the Trans Cylinoid..Valcum Modulater..or TV Cable...Where should I start or should I replace all and change fluid and filter...
Cargo Master
Joined: Dec 2003
Posts: 2,182
Likes: 7
From: Saint Augustine, FL
You didn't say which transmission you have. We will assume its either an AOD or a C6, the two most likely options. Neither has a solenoid to control shifting. The AOD is controled by a TV cable. If it shifts normally when cold, then its not the cable out of adjustment. Sounds like the seals are dead and open up and leak internal pressure as they warm up.
A C6 will have a vacuum modulator but again, temperature shouldn't have much effect on the modulator. If it had a vac line losing vacuum it would shift late and hard instead of early and slip.
I would pull the pan and inspect it for debris and see what the fluid looks like. New fluid may help but I suspect you will need an overhaul
Steve
'95 Clubwagon XLT
A C6 will have a vacuum modulator but again, temperature shouldn't have much effect on the modulator. If it had a vac line losing vacuum it would shift late and hard instead of early and slip.
I would pull the pan and inspect it for debris and see what the fluid looks like. New fluid may help but I suspect you will need an overhaul
Steve
'95 Clubwagon XLT
What dose AOD Means
Cargo Master
Joined: Dec 2003
Posts: 2,182
Likes: 7
From: Saint Augustine, FL
AOD = Automatic Over Drive. Then there is the AODE = Automatic Over Drive Electronic.
If your '86 F150 (302) has an OverDrive transmission in it, its an AOD. If its a 3 speed it is most likely a C6.
Steve
'95 Clubwagon XLT
If your '86 F150 (302) has an OverDrive transmission in it, its an AOD. If its a 3 speed it is most likely a C6.
Steve
'95 Clubwagon XLT
