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Old 01-01-2019, 09:04 PM
RRPhil RRPhil is offline
Join Date: Jan 2011
Location: Blackburn UK
Posts: 395
RRPhil is on a distinguished road
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.

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

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