having issues with the small vacuum pump under the hood. vents wont switch from defrost to panel to floor. learned today that controls auto hubs as well. is there a fuse that controls this? anyone have any input on this situation
i have checked and all hoses seem to be fine. can you hear the pump while it is running. i have unhooked a hose and cant seem to tell if the pump is running or not. i have checked and there is voltage coming to the pump
I don't recall being able to hear the pump running while the truck is running. If your grey hose to the heater hose was indeed hooked up, and you unhook it and put your finger on it (with the truck running) you should feel a slight suction. Be sure and not only check connection points, but also check the entire run of the vacuum lines for cracks/splits. If you don't have any breaks in the lines and don't feel suction when you test them then order a new pump.
Work the same? Yes. They might be in the same place and possibly the same pump. Cause from what I remember a lot of the condenser and blower motor A/C components didn't move much if at all which is what the pump is next to along with the vacuum reservoir.
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