Air brakes
It seems that after I replaced the crank position sensor the bus will not build air. the air drier valve is open. There are three small senors(?) near the ABS controller on the back of the bus, they were corroded. Does anyone know if these are universal parts and if so what is their proper names. I am guessing a low pressure sensor relay, a high pressure sensor relay, and a pressure sensor. Could this be the cause of the open air drier valve and which is not allowing any pressure to be built up?
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