5R55W Solenoid Block Replacement

[Phisherman]

I strongly believe the problems which keep occurring with 3rd gen explorer transmissions are related to the A/C drip line corroding parts of the transmission. I posted something about it to help prevent problems for others and hope I can help more... I bought mine with 165k miles and now have over 185k. I am now starting to experience some occasional slow/rough shifts around 2nd. This was after driving in the river... I need to waterproof some more.

 

[mdisalvo]

I strongly believe the problems which keep occurring with 3rd gen explorer transmissions are related to the A/C drip line corroding parts of the transmission. I posted something about it to help prevent problems for others and hope I can help more... I bought mine with 165k miles and now have over 185k. I am now starting to experience some occasional slow/rough shifts around 2nd. This was after driving in the river... I need to waterproof some more.

That's a really interesting theory. Mine has always shifted rough (late or harsh reverse engagement and late/harsh 2-3 shifts particularly) and I have definitely noticed it always seems to act up more after I drive through heavy rain. Hmm.

 

[exployerzoch]

was it the servo bore leaking.?

 

[Towelie318]

Thought'd I'd chime in here because the information I've found on this site have been invaluable to me.

Yesterday, I replaced pressure control solenoid, filter, and roughly half of the fluid. When it came time for a test drive, I was amazed by how much better it now shifted. Job was fairly easy, albeit pretty messy.

Thanks, forum.

 

[JW]

Which solenoid unit did you go with?

 

[Towelie318]

Which solenoid unit did you go with?

It was just a Bosch unit I picked up off ebay. The solenoid pack, a new pan gasket, and a trans filter went for $350. Add another 70 or so for fluid, the little brass Nipple thing you use to refill, a couple socket wrench extensions, and a fluid pump and you're still far less than the 850-1K my local shop wanted to do the job.

I went into it expecting the worst (finding metal shavings or loose/broken parts swimming around in the pan), but found none of those. Just some slightly dark fluid really. The removal/replacement of all the parts went very smooth.

So, thanks again for the write ups and information!

 

[jd4242]

Is the EPC solenoid in the ""solenoid pack"" or is it separate? ?

 

[JK080]

Is the EPC solenoid in the ""solenoid pack"" or is it separate? ?

Its within the "solenoid pack"

 

[jd4242]

Its within the "solenoid pack"

Thank you..can you recommend any other Sonnax parts thats not "in or covered " by the Transgo shift kit?? Ive done Oring servos and about to do the solenoid pack with TransGo shift kit

www.transgo.com/products.php?prd=SK-5R55W&homeinclude=catalog&category_id=74&parent_id=30&product_id=124&countdisplay=1&start=0&addcountview=Yes


Is this valve in the shift kit or equivalent? ?
http://www.sonnax.com/parts/4225-line-pressure-booster-kit

 

[jd4242]

Also is there a pan difference in the 4x4 and 4x2 models???? Can anyone measure their 4x4 pan??

I have a 2003 aviator 2wd and it appears to be a deep pan

 

[bluestream1]

Borland has left the board...Any way to get the pictures from 1st post back up? This is the problem with external posted pics, they all disappear at some point.

 

[05explorerXLT]

My 2005 XLT 4WD 102,000 miles is having tranny problems with no codes or flashing light. I have noticed that when the tranny gets up to operating temperature that upon slowing down one of the gears will downshift hard (bang) right before coming to a complete stop (not all of the time though). Occasionally after stopping with no down shifting bang, it will instead bang hard upon take off from a stop. These bangs have always happened since owning it with 18,000 miles but they were tiny in comparison to now. However, the bangs have gotten much harder this summer since I drive farther now during 100+ degree days. One last issue is on a rare occasion the reverse gear takes a few seconds to engage. Any ideas on the what it could possibly be. Thanks.

 

[steveatthebeach]

5R55W Solenoid Pack Replacement on 2002 Explorer XLT

Here’s the procedure.

Placed all fours on 4”x12” wooden blocks.

Disconnect the battery neg terminal

Draining ATF with 22mm wrench. Only about 4 qts drained.

Is the original post with pics still available? Pics from original post aren't showing up

 

[05explorerXLT]

Is the original post with pics still available? Pics from original post aren't showing up

Unfortunately I think your request will fall on deaf ears. I think a lot of smart folks have gotten rid of these vehicles and moved on. We may be the only ones left.

 

[steveatthebeach]

Unfortunately I think your request will fall on deaf ears. I think a lot of smart folks have gotten rid of these vehicles and moved on. We may be the only ones left.

Thanks!