Transmission Slipping - HELP! - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

Ranger83 · 07-11-2007, 18:22

I started noticing that everytime I drive my car to work (cold start) my transmission keeps slipping. Its as if someone put me in neutral then it catches again. It slips out of drive in to neutral. Seems like the problem goes away when its been running for a while and gets hott. I don't know what the problem is. Can anybody help?

**Big Block Ford** · 07-11-2007, 19:18

First thing is to check your transmission fluid level.

Ranger83 · 07-11-2007, 19:45

I checked it. Its fine. Thanks though.

dryelf327 · 07-17-2007, 10:34

Vehicle? Mileage? Tranny Service History?

You might try throwing in some Lucas Transmission Fix to help alleviate the problem.

Ranger83 · 07-17-2007, 11:24

Its a Ford Ranger 1983. C4 tranny, never been to a shop. Brand new engine and tranny and I've put in some of that stuff and it worked temporarily

backlash1 · 07-18-2007, 05:23

Sounds like a worn forward clutch, but I can't remember if they're adjustable from the outside on those boxes. Does it only happen in "D" or also when you manually select 1, 2, etc ?
marc

cjperformance · 07-18-2007, 06:54

no clutch adjustment on a c4. the clearence is set when assembled. the front and rear bands are exernally adjustable. you mentioned that its a new trans and motor. that problem usually happens on high milage tranys caused by hardened clutch piston seals and lower than spec line pressure. if the trany is new, i would be guessing that the trans builder may have accidentally nipped a seal when building the trans, or there is a problem in the valve body. cheers

Ranger83 · 07-18-2007, 15:17

it only happens when the truck is cold. (1st 2nd Drive and Rev. are affected) Once it has been ran for a while the problem goes away completely.

cjperformance · 07-19-2007, 02:42

your problem is most likely valve body related. you will need to get it to your local trans specialist and have them repair it before it does more or serious damage to the rest of the trans. cheers.