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  #11  
Old 01-01-2019, 04:53 PM
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Quote:
Originally Posted by snik View Post
Similar to the issues I've had.
Your valve body is done. Probably has some dead solenoids too.
Send it off to get rebuilt, put it back in with fresh fluid and seals and you should be good to go.
I used a rebuilder in eBay, it was great. Will ok turnaround too. Under $700.


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Fun. I guess Ill send it off to RevMax for $599 in Charlotte, NC. Nearing having a shop lined up to pull it out. Spent part of the afternoon defunking the underside and under the hood.
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  #12  
Old 01-01-2019, 05:12 PM
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Quote:
Originally Posted by 740ilDuke View Post
Fun. I guess Ill send it off to RevMax for $599 in Charlotte, NC. Nearing having a shop lined up to pull it out. Spent part of the afternoon defunking the underside and under the hood.


The 5hp may be cheaper to do.
I have a 6hp with the A051 plate. Apparently they're becoming rare. Most places are only rebuilding them now rather than outright selling rebuild units.

Why are you paying a shop to drop it. So it yourself. It takes maybe 30mins.
Drain fluids. Drop the pan.
Pull the mechatronic locking tab. Turn mechatronic sleeve to unlock/unscrew electronic plug. Remove plug.
Unscrew valve body bolts and lower valve body. Let it all drain. Dry off. Remove TCM carefully. Pack in about 3 bag. Package and mail off.


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  #13  
Old 01-01-2019, 05:50 PM
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Quote:
Originally Posted by snik View Post
The 5hp may be cheaper to do.
I have a 6hp with the A051 plate. Apparently they're becoming rare. Most places are only rebuilding them now rather than outright selling rebuild units.

Why are you paying a shop to drop it. So it yourself. It takes maybe 30mins.
Drain fluids. Drop the pan.
Pull the mechatronic locking tab. Turn mechatronic sleeve to unlock/unscrew electronic plug. Remove plug.
Unscrew valve body bolts and lower valve body. Let it all drain. Dry off. Remove TCM carefully. Pack in about 3 bag. Package and mail off.


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Im rounding up a shop to drop the transmission, once that's drained and out I can remove the valve body & torque converter for reconditioning.
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01' DINAN 7 S62 Swap - Stratus Grau
(1587 produced in SG 440)
02' 4.6is DINAN X5 S2 Supercharged
833/3258 produced | 1/27 Dinan X5's
85' BMW 635csi, 60k miles
Greenville, NC
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  #14  
Old 01-01-2019, 06:10 PM
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Unless you are sure what the problem is, since a transmission shop is pulling the transmission, I would have them do a diagnosis before they pull it and you start buying parts.
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  #15  
Old 01-01-2019, 07:08 PM
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Quote:
Originally Posted by 740ilDuke View Post
Im rounding up a shop to drop the transmission, once that's drained and out I can remove the valve body & torque converter for reconditioning.


Ahh. Ok. Gonna have the whole thing rebuilt?
You may not need it tho. The transmission itself is pretty solid.
From talking to many rebuilders, the impression I get is worn valvebody cylinders and half dead solenoids cause most of the issues.


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  #16  
Old 01-01-2019, 09:04 PM
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If the mileage is high it may be worth getting a Sonnax main pressure valve fitted. Worth doing a vacuum test first, but I find that I need to replace quite a few.







https://www.youtube.com/watch?v=54gBRA_yMnM

https://www.youtube.com/watch?v=jm_M4hk1YHI

https://www.youtube.com/watch?v=MZH3BkKlNfM



Unlike the 6-speeds, the solenoids on the 5HP24 are generally very reliable



Based on your symptoms, itís also worth checking that your upper valve block doesnít have a crack in the SV-1/KV-F circuit





Phil
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  #17  
Old 01-01-2019, 10:14 PM
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Wow, thanks Phil. That's a ton of information.

The X5 has 107k miles on it. It shifts perfect until it
gets warm and then loses it's mind. Upper gears seem fine, so
when I drive it (hardly never until this is fixed) I start in M-3 and
drive easy until up to speed and shift into M4 & M5.

Im not a transmission expert by any stretch, but appreciate the insight
and knowledge you've shared.

Here's the shop that's rebuilt a VB for me in the past.
https://revmaxconverters.com/product...ed-valve-body/

A gentleman about 90 miles away will rebuild the transmission for $900
& a shop in Chicago is charging $250 to reman the L51. VB another $600.

I'd considered a flush, but would rather just rebuild it instead of some now and some later. One shot and check all the boxes is what Im after.

What fluid is recommended?



Quote:
Originally Posted by RRPhil View Post
If the mileage is high it may be worth getting a Sonnax main pressure valve fitted. Worth doing a vacuum test first, but I find that I need to replace quite a few.







https://www.youtube.com/watch?v=54gBRA_yMnM

https://www.youtube.com/watch?v=jm_M4hk1YHI

https://www.youtube.com/watch?v=MZH3BkKlNfM



Unlike the 6-speeds, the solenoids on the 5HP24 are generally very reliable



Based on your symptoms, itís also worth checking that your upper valve block doesnít have a crack in the SV-1/KV-F circuit





Phil
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01' DINAN 7 S62 Swap - Stratus Grau
(1587 produced in SG 440)
02' 4.6is DINAN X5 S2 Supercharged
833/3258 produced | 1/27 Dinan X5's
85' BMW 635csi, 60k miles
Greenville, NC
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  #18  
Old 01-02-2019, 04:46 AM
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Quote:
Originally Posted by 740ilDuke View Post
What fluid is recommended?
Only ever use either ZF Lifeguard Fluid 5, Pentosin ATF 1 or Mobil ATF LT71141 in your 5HP24. This guarantees that you have the right friction modifier pack to ensure that the torque converter lock-up clutch functions correctly in its Ďcontrolled slipí mode





Phil
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  #19  
Old 01-02-2019, 01:51 PM
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Had a similar issue, cant recall the codes, but the solution was simply replacing the harness in the transmission. Something about a thermostat/temp sensor that failed. Maybe you will get as lucky, but after a new filter, fluid, and the harness, all was great
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  #20  
Old 01-02-2019, 10:03 PM
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Quote:
Originally Posted by oldskool racer View Post
Had a similar issue, cant recall the codes, but the solution was simply replacing the harness in the transmission. Something about a thermostat/temp sensor that failed. Maybe you will get as lucky, but after a new filter, fluid, and the harness, all was great
What made you decide to replace the harness? Codes? Hmm.
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01' DINAN 7 S62 Swap - Stratus Grau
(1587 produced in SG 440)
02' 4.6is DINAN X5 S2 Supercharged
833/3258 produced | 1/27 Dinan X5's
85' BMW 635csi, 60k miles
Greenville, NC
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