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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

another heater problem

Old Oct 22, 2007 | 09:10 PM
  #1  
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jtimcort
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another heater problem

I am having a weird problem with my heater in my 96 f-150 I-6 and its startin to get cold so I would love to fix it. I did a radiator flush and like u r supposed to I ran the heater with the flush in the system. Now my truck cools great no overheatin but my heater doesn't get hot. If I switch to vent it gets warm but not hot. Defrost, mix, and floor spit out cold air. Both lines goin into and comin out of the heater core are hot as hell. The heater worked perfectly before I did the flush any help will be greatly appreciated. Thanx in advance
 
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Old Oct 22, 2007 | 09:48 PM
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radialarm
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From: Boyd,TX
It's one of two things. air in it, or a bunch of crud from your block and radiator stopped it up. If it is original I would replace it.
 
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Old Oct 22, 2007 | 09:53 PM
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handsomerob
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Could be the cable conection on the back of the temp switch. Mine slips out sometimes and I have to pull it apart and put it back in otherwise it gets stuck on the last setting I left it on.
 
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Old Oct 23, 2007 | 08:39 PM
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If it is air in the system how do I get it out? I'm guessin that I have to take the dash off to replace the core? And I will check on the switch too hopefully I won't break anything
 
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Old Oct 23, 2007 | 08:46 PM
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quicklook2
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From: Lakewood, Ohio
to take core out is simple.

drop glovebox door, remove 7 screws and remove panel to see core, unhook hoses marking where they each go, and you can then remove core.

good time to replace it and clean out housing of any obstructions.

buy a manual if you do not already have one.

take everything out of glovebox and squeeze in the top sides and it will flop down and hang.
 
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