Vacuum issues, defroster is stuck on
#1
Vacuum issues, defroster is stuck on
So I know that I have a vacuum issues because no matter what I have the vent selecter set to air will only come out of the defroster. I also am pretty sure I know where the vacuum leak is. The rubber vacuum lines for the locking hubs are old and cracked and are actually not connected to the front axle. My question is if I cap off the auto locking hub lines will that stop the vacuum leak enough so that I can once again use the vent selector? Or is there something else that I can do. Let me know what you think.
#3
I'm not sure what year you have. My 2000 had the same problem. The vacuum pump and res. on the pass. side engine compartment builds up when you turn the key. My front hubs didn't work any longer and the vacuum would never build up. The defrost is the default position and the heater/ a/c needs the vacuum to actuate. I just plugged the ports that fed the hubs, and all is well.
2000 F-350 7.3l Crew cab dually
2000 F-350 7.3l Crew cab dually
#4
I'm not sure what year you have. My 2000 had the same problem. The vacuum pump and res. on the pass. side engine compartment builds up when you turn the key. My front hubs didn't work any longer and the vacuum would never build up. The defrost is the default position and the heater/ a/c needs the vacuum to actuate. I just plugged the ports that fed the hubs, and all is well.
2000 F-350 7.3l Crew cab dually
2000 F-350 7.3l Crew cab dually
#5
I plugged them at the pump/res. I'm not in front of the truck, and sorry, I don't recall what I used. But any "plug" that will stop the leak will work. I'm sure that most parts houses will have rubber fittings/sleeves that slip over a vacuum line connector that will work.
If you still need help tomorrow, I can revisit and see what I used.
If you still need help tomorrow, I can revisit and see what I used.
#6
#7
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