There is also a 1-2 shift valve in the valve body. A jumping speedometer can cause all sorts of shift issues.
The solenoids have +12v any time the key is on. The computer completes the ground to each solenoid when it wants to turn that solenoid on.
Does you OD OFF light work? Has it been flashing? If so, you have codes stored. Reading the codes is the best place to start any diagnosis. The places that read codes free cannot read these codes. You need either a good independent shop or a Ford dealer.
The solenoids have +12v any time the key is on. The computer completes the ground to each solenoid when it wants to turn that solenoid on.
Does you OD OFF light work? Has it been flashing? If so, you have codes stored. Reading the codes is the best place to start any diagnosis. The places that read codes free cannot read these codes. You need either a good independent shop or a Ford dealer.