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Mark, since I replaced the transgo springs and valves with sonnax parts essentially making a sonnax accumulator body shift kit, should I remove the calibration plate? I notice all the other shift improvement kits do not use a accumulator body plate.
Remove the calibration plate.
Sonnax kit doesn't require this part.
Remove the calibration plate.
Sonnax kit doesn't require this part.
Where do I find the original plate? I honestly cannot find proof of there being a plate there originally but mark was an engineer for these transmissions.
I don’t think it’s the accumulator body. When I bought the truck the previous owner sent me a video of it driving before I bought it. Truck shifted excellently and locked up when it should. Only thing that changed since then was it being shipped to me and it having a MLPS sensor code. Bought a new MLPS sensor and the code went away but the shifting is still bad. I am reading online the issue could be the PSOM, the VSS or the MLPS isn’t reading correctly. Any tips on this?
So I’m still trying to fight this shifting issue.
Im currently trying to figure out why the truck shifts as it does.
When i floor it, the truck will either downshift or lock the converter.
I was under the assumption the truck should upshift or unlock the converter.
Sometimes after a few seconds the truck will decide to upshift or unlock the converter cause the engine is lugging.