Compression Ignition Addict
Join Date: Mar 2008
Location: Santa Rosa, CA
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If your heat is still working properly and not reverting to "defrost" then your vacuum pump is working fine, so the problem is most likely at your hubs.
It could be the hub seals, I had one go bad with only 30k mi. on the truck.
or it could be a leak in one of the vacuum hoses going from either hub up to the vacuum solenoid on the passenger side fender.
2005 F-250 CC/SB 4x4 medium wedgewood blue
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5" lift, 5" Donahoe rear springs, 35x13.50 MTZ's, 18x12 Fuel Hostage wheels, 4.30 gears, Banks 4" exhaust, Airraid intake, SCT from Innovative, ARP headstuds, Bulletproof ficm, Scangauge II, Randy Ellis Design lightbar, Street Scene flares, Harpoon mod, Zoodad mod, LED 2010 taillights, Switchback LED front turn signals