Is the thermactor bypass valve on an sefi 5.0 suppose to have vacuum going to it when the engine is cold as well as warm at idle?
Is the thermactor bypass valve on an sefi 5.0 suppose to have vacuum going to it when the engine is cold as well as warm at idle?
1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD.
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