Vac control module?
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From: S.W Ohio
Vac control module?
Hey all, I was told that i needed to replace my vacume control module so my 4x4 would work like it's suppose to. Problem being I can't find the part number anywhere to order it. I really want to fix it asap, cause winter will be here soon and I don't want to have to get in and out of the truck to engage my hubs. Has anyone else had this problem? Thanks Bill
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99 - 10 F250 F350 F450 OEM Genuine Ford Vacuum Solenoid Valve 4WD Locking Hubs
7C329H465A
Many threads here on the subject, type "vacuum hubs" in the search box toward the top of every page. Lots of good info.
Or better yet, click here ---->https://www.ford-trucks.com/forums/1...50-diesel.html
This is the ESOF thread from our Tech folder.
7C329H465A
Many threads here on the subject, type "vacuum hubs" in the search box toward the top of every page. Lots of good info.
Or better yet, click here ---->https://www.ford-trucks.com/forums/1...50-diesel.html
This is the ESOF thread from our Tech folder.
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Joined: Jun 2012
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From: S.W Ohio
Yup the heater defaults to the defrost, until I plugged the vacuum line going to the solienoid. Now the heat and all works fine, I just have to get out and manually lock my hubs now. What a PITA. Since I've owned this truck, I ask myself what else would I spend my money and time on.
Hotshot
Joined: Apr 2010
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From: Saratoga Springs,UT
So it sounds like the Vac pump is OK then
so tell me this when you switch to 4X4 does the Heater go to Defrost???
so tell me this when you switch to 4X4 does the Heater go to Defrost???
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Hotshot
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From: S.W Ohio
Ya before, I plugged the lines going to the solienoid the heat would go to defrost. Ya I think the vacuum pump is fine. Reason being now the vacuum lines are plugged, my heat and all is fine. Just have to get out and manually lock my hubs. I would think that if my vacuum pump was bad, it wouldn't matter either way if I plugged the vac lines or not. Am I correct for assuming this?
Hotshot
Joined: Apr 2010
Posts: 19,071
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From: Saratoga Springs,UT
Ya before, I plugged the lines going to the solienoid the heat would go to defrost. Ya I think the vacuum pump is fine. Reason being now the vacuum lines are plugged, my heat and all is fine. Just have to get out and manually lock my hubs. I would think that if my vacuum pump was bad, it wouldn't matter either way if I plugged the vac lines or not. Am I correct for assuming this?
Yes^^^
But you still need to Test it Cause we not down to 1 Part Yet
You Have a couple things that could cause this
Leaky Vac Line to Hubs
Leaky Hub Seal
Bad Silinoid
The Last Bad Silinoid here would Engauge 4X4 when switched but then the Heater would default to defrost at that Time so Try this
Do you have a Hand Vac Pump??? that you can Pull Vac on the Lines to test them and the Hub Seals
Fleet Owner
Joined: Apr 2012
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From: Spanaway
You could pick-up or rent one of the cheep ones at Autozone
OEM/Vacuum pump and gauge tester includes 24 in. tube (27010) | Vacuum Pump | AutoZone.com
Sean
OEM/Vacuum pump and gauge tester includes 24 in. tube (27010) | Vacuum Pump | AutoZone.com
Sean
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From: S.W Ohio
Thanks Sean, I will try to pick one up in the morning when I get off work. That is if I ever get off work, ha ha. Still curious though if I do indeed need the vacuum solienoid what the part number is so I can research price and availability.
Bill
Bill
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