My 93 f150 5.8 auto has an issue I never came acroos before.

When first started in the morning (especially when cold), I start it and let it run a few minutes (4-5), I put it in DRIVE and I can feel it engage.

The first few take-offs from a dead stop it almost feels like the transmission is slipping, but it shifts pretty solid.

After a mile or so, take-offs from a stop give no indication of sllipping....smooth and progressive with good solid shifting.

I recently changed the transmission fluid and added a bottle of Lucas Trans fix and nothing is different.

I am also wondering if it could really be an engine issue with a sensor acting up until it gets warm...I dunno.

IDEAS?!?!?!!? Thanks in advance...Dave

 

WHICH auto does it have? If you don't know, read this caption & follow the links in it:



Then put the truck's specs in your profile &/or signature so you don't have to remember to type them next time.

 

or you can use this.

 

The one in the caption of my diagram shows MANY more transmissions than that one.

 

But in a 93 with a 351 he's going to have an E4OD or an outside possibility of a C6.

 

There were 3 autos available for F150s in 93 (C6, AOD, E4OD), but it's moot. As soon as he checks the door code, he'll know.

 

With a 351, it won't be an AOD.

AOD: PRN(D)D1
E4OD: PRN(D)21 with OD lockout button
C6: PRND21