Re: 2000 Ford F250 Diesel air cond problems
Run a vacuum line directly from the pump to the damper actuator. Or buy a hand vacuum pump and do the same. Eliminate each device. But if you start at the actuator and it moves and stays in position it should be ok. The rubber diaphragm may be cracked and is leaking.
Sean
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Sean Marconette
84 Mustang
5060 SS/N
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