03 Windstar - Tranny "slips" when hot

[pedaltroy]

My van runs and shifts perfectly when cold - no problems at all. After driving for 30 minutes the transmission will disengage, usually when trying to pull away from a stop light. The motor spins but no power is going to the wheels. But only when its hot. No engine codes show. I have changed the TR sensor, but that has not helped.

[mark v]

Transmission needs a rebuild. When it gets hot the parts expand and slipping results.

[vindctar]

Yes, mark v is right...and get the rebuild sooner than later, so you are not left stranded somewhere. Aamco do a good job!

[sixgun95]

How many miles are on the van?

[GraybeardAv]

Is the fluid clear, or burnt? I would change it and filter until it remains clear, and put in an additive. You may get at least a few thousand more miles out of it.

GB

[firstwindstar02]

changing or flushing the fluid can cause more problems than help a bad transmission. The reason for this is because this will disrupt any globs of buildup which will clog the intricate fluid path somewhere down the line... result: imminent catastrophic transmission failure.

[vindctar]

Exactly!

Originally Posted by firstwindstar02

changing or flushing the fluid can cause more problems than help a bad transmission. The reason for this is because this will disrupt any globs of buildup which will clog the intricate fluid path somewhere down the line... result: imminent catastrophic transmission failure.

[GraybeardAv]

Uh, you're telling the person to get it rebuilt anyhow. What is there to lose?

Assuming the fluid is dirty, changing fluid and filter can only help. The filter collects crud, and it can clog.

GB

[HIGHROLLER1963]

I got the same problem

[midnight rumbler]

I would agree with Greybeard on this one.....

I do not think this individuals problems can get any worse by installing new fluid int he tranny. Unfortunately they have not specified the miles on this particular unit but one may assume it is a higher mileage unit.

I had similar problems with my vehicle and for $120.00 for a new filter and fluid versus $2800.00 plus for a rebuild, I chose to invest $120.00 first to resolve the issue and it worked excellent. My shudder went away and tranny no longer has any issues.

Besides the fact I took my vehicle into a reputable tranny shop only for them to say the fluid was fine. Well, let me tell you, when you look at the dip-stick, it looked and smelt fine, but with 90,000 miles and after dropping the pan, the filter was clogged and the fluid was BURNT. By looking at the stick does not give adequate results.

Do the regular maintenance and most issues can be resolved

I also ran LUCAS in there as well for an added boost of assurance.

GO WITH THE FLUID CHANGE FIRST and see what happens, what do you have to lose but $2680.00 on an unescessary rebuild at the moment?????