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FED 387 · 09-10-2014, 02:41 PM

OK--so far I have replaced the pump and the reservoir with a known good pump & reservoir--- chased down all the vacuum hoses none appear to be chafed or worn--- how about the control selector on the dash anyway to test it ? or do they just "go bad" looks like its all plastic so no way to take it apart the hose is fastened to the selector not hanging or anything- changing it from any position to another( vent/AC/heat/defrost) changes nothing STILL ONLY DEFROST !!!-- looked under the dash/glovebox area nothing appears out of the ordinary there---any suggestions other than replaceing the selector knob---truck is 2 wheel drive and has AC---thanx FED 387

09-10-2014, 02:41 PM	#14
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,416 Likes: 522 Liked 330 Times in 178 Posts	Re: 2000 Ford F250 Diesel air cond problems OK--so far I have replaced the pump and the reservoir with a known good pump & reservoir--- chased down all the vacuum hoses none appear to be chafed or worn--- how about the control selector on the dash anyway to test it ? or do they just "go bad" looks like its all plastic so no way to take it apart the hose is fastened to the selector not hanging or anything- changing it from any position to another( vent/AC/heat/defrost) changes nothing STILL ONLY DEFROST !!!-- looked under the dash/glovebox area nothing appears out of the ordinary there---any suggestions other than replaceing the selector knob---truck is 2 wheel drive and has AC---thanx FED 387