wildmandmc Posted August 11, 2015 Report Share Posted August 11, 2015 have a horizon itasca, 2000 DP. (eng a/c) last time went camping a/c coming out of front vent, when we left went to defrost vent, Switch is not stuck, as if i switch it to heat , heat comes on. just wont switch back to front vents, told could be a pinched line or fallen off of connection, where do i start to look. 300 Cat eng. 2000 Itasca Horizon DP (Got Total During Irma). Vice President of Charlotte County Defenders LE MC http://charlotte.defenderslemc.com/ Link to comment Share on other sites More sharing options...
Chief 62 Posted August 11, 2015 Report Share Posted August 11, 2015 The blend doors in the dash of cars/trucks usually work off vacuum motors. I would see if you can locate a leak in your vacuum canister which most probably is located under the dash. I would check on the right side in the area of where the wife would have her feet. Maybe she knocked something loose there. Gary & Penny 2015 Lance 1172 2005 Chevy 3500 2013 Bass Tracker 190 Pro Team Link to comment Share on other sites More sharing options...
wildmandmc Posted August 11, 2015 Author Report Share Posted August 11, 2015 a short time ago, opened up where generator is, couldn't find anything that might be off. where wife puts her feet is enclosed, so nothing really to kick or knock off. 2000 Itasca Horizon DP (Got Total During Irma). Vice President of Charlotte County Defenders LE MC http://charlotte.defenderslemc.com/ Link to comment Share on other sites More sharing options...
Clay L Posted August 11, 2015 Report Share Posted August 11, 2015 Defrost mode is the default when there are vacuum or vacuum motor failures. So there is some problem with one or the other. Clay(WA5NMR), Lee(Wife), Katie & Kelli (cats)Full timed for eleven years in our 2004 Winnebago Sightseer 35N Workhorse chassis. Snowbirds for 1 year. Now settled down in western CO.Honda Accord toad. Link to comment Share on other sites More sharing options...
TXiceman Posted August 11, 2015 Report Share Posted August 11, 2015 You have a vacuum, leak or a bad vacuum, motor. Ken Amateur radio operator, 2023 Cougar 22MLS, 2022 F150 Lariat 4x4 Off Road, Sport trim <br />Travel with 1 miniature schnauzer, 1 standard schnauzer and one African Gray parrot Link to comment Share on other sites More sharing options...
wildmandmc Posted August 12, 2015 Author Report Share Posted August 12, 2015 thanks, gives me more direction on where to look. 2000 Itasca Horizon DP (Got Total During Irma). Vice President of Charlotte County Defenders LE MC http://charlotte.defenderslemc.com/ Link to comment Share on other sites More sharing options...
wildmandmc Posted November 16, 2015 Author Report Share Posted November 16, 2015 ok now im starting on this project or actually back to it. vac motor pump working good. the "ball i found: nothing was connected to it. found a loose line (hose). i put it in, an dash did not switch to vent. now have to try find a cut in line or ?. work in progress. 2000 Itasca Horizon DP (Got Total During Irma). Vice President of Charlotte County Defenders LE MC http://charlotte.defenderslemc.com/ Link to comment Share on other sites More sharing options...
Dale P Posted November 17, 2015 Report Share Posted November 17, 2015 Since you have a CAT engine, DP pusher. You have a vacuum motor on your front firewall. If you listen, prior to turning the key to engage the starter, you should hear the pump motor running. Start with that, then it becaomes easy in locating the tubing that may have come off, if the motor is good Susan & Dale DaGirls Rv 2008 Alfa Gold SoLong ISL 425 Cummins 2015 Ford F-150 XLT Tow / Roadmaster Setup 1600W@45Vdc Magnum Inv/Chg&Solar880AmpHrDaGirlsRv Blog Link to comment Share on other sites More sharing options...
wildmandmc Posted November 18, 2015 Author Report Share Posted November 18, 2015 pump working good. found the tube. 2000 Itasca Horizon DP (Got Total During Irma). Vice President of Charlotte County Defenders LE MC http://charlotte.defenderslemc.com/ Link to comment Share on other sites More sharing options...
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