Originally Posted by Transman

Did you try to see if you had OD pressure? Report back your findings.

If the solenoid is truly good, first thing to look for is a stuck OD control valve, which lies underneath that solenoid.



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I don't have a pressure gauge, but I know it must put out 50lbs around 50mph.
My home brew controller has a pressure switch that activates at 50mph, LU still works, the OD just isn't kicking in.

I took car for a test run, for another issue I'm chasing, and tested both the LU and OD with the manual switches (only above 50mph)
Randomly toggling the OD switch and it did kick in (1 time) and the RPMs dropped as expected and ran fine until I had to stop for light.
OD never came back on, but LU always works.

So at this point I'm thinking my next step is to just bite the bullet and attempt to change the solenoid.
Any other options?

Any harm in driving it as is, and just use the LU above 50mph?

Thx




Last edited by BDW; 11/06/22 05:50 PM.