Heater

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Heater - 1/3/2008 6:38:16 AM    wsnyder69   Posts: 1 Score: 0 Joined: 1/3/2008 Status: offline I have a 99 Expedition EB 5.4L and my heater has started to act up. When I stop at lights it starts blowing cold, but when I rev the engine it gets hot again. Is this a blend door problem? I found a site that has instructions for this, but I don't want to get into it if this isn't the problem. Post #: 1

RE: Heater - 1/3/2008 7:58:39 PM    btexpress   Posts: 130 Score: 0 Joined: 12/21/2007 Status: offline Sounds more like a flow problem thru the heater core, it may be plugged up. _____________________________ Dennis W www.blueovaltechs.com http://blueoval.myminicity.com (in reply to wsnyder69) Post #: 2

RE: Heater - 1/7/2008 10:31:26 AM    oldtimer35 Posts: 333 Score: 0 Joined: 11/27/2007 Status: offline Check your coolant level, sounds like it may be low, or your waterpump is not putting out properly. (in reply to wsnyder69) Post #: 3

RE: Heater - 1/7/2008 1:41:05 PM    flyinfish   Posts: 4 Score: 0 Joined: 1/6/2008 Status: offline I would suspect low coolant level as well...... (in reply to oldtimer35) Post #: 4

RE: Heater - 1/9/2008 9:47:03 AM    BRETM   Official Site Sponsor Posts: 257 Score: 0 Joined: 11/9/2007 Status: offline The most common problem on these are the blend door actuator! _____________________________ www.discountedgenuinefordparts.com (in reply to flyinfish) Post #: 5

RE: Heater - 1/10/2008 11:28:45 AM    oldtimer35 Posts: 333 Score: 0 Joined: 11/27/2007 Status: offline The blend door actuator would be constant problem, not changing with engine rpm. (in reply to BRETM) Post #: 6

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