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Old 01-01-2019, 10:14 PM
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740ilDuke 740ilDuke is offline
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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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740iLDUKE
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
Greenville, NC
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