Jake Brake

[Bob Lawrence]

Hi group,

On our way here to Fla from Texas,I have noticed the jake brake quit working on
the high position. That is the one I mainly use, very rarely the low position.
Thing is, the low position sounds like it has the high setting.
I changed out the switch figuring it's 25 years old and fried itself.
Didn't help.
My next thought is that there is a solinoid in the engine compartment that has
bit the dust. Problem is, where do I look for it?
I would think this part is pretty available, but I have to find it first.
Any thoughts on where to look?

Bob Lawrence
84 PT36
Tallahassee, Fla