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Oct 7, 2003 | 01:55 PM

dogboytom

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From: boston

heater

i posted this in the wrong forum just now....anyway, i am trying to get heat from my 1986 f150...302, no a/c....fan works fine, heater doors work, but no heat...mouse nest is disposed of...little sgwiggly wire thing on front of heater box has been replaced....no heat, just cold air...any ideas?

Oct 7, 2003 | 01:59 PM

stepman

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From: peoria, az

Tried flushing the hoses and the core?

Oct 7, 2003 | 02:11 PM

dogboytom

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From: boston

no i haven't....what's the procedure...what do i use?

Oct 7, 2003 | 02:26 PM

stepman

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From: peoria, az

Check to see if both of them are getting hot. If you have a cold one, your core is probably plugged. unhook the hoses and (I use the garden hose) hook it to the cold one and run water thru the core (backwards). You should see water come out the other hose. When doing, you don't need the water on high, it should only take a little. I usually just hold the water hose to the heater hose and have someone turn it on. Once it clears out I go back and forth a couple times to make sure it's clean.
There may also be a control valve in one of the hoses. Make sure water can flow thru it too.

Oct 7, 2003 | 02:29 PM

dogboytom

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From: boston

thank you...that sounds easy enough

Oct 7, 2003 | 10:53 PM

locknkey

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From: Right Next to U

Autozone or other parts suppliys sell an product by Prestone thats flushes out your system really easy, costs alittle less than $5.00

Oct 7, 2003 | 10:57 PM

stepman

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From: peoria, az

You don't need anything though, all you need is a hose.

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Oct 7, 2003 | 11:46 PM

85F_150driver

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Joined: Jun 2003

Posts: 390

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From: Rose City, MI

i had a similar problem.......... had verry little heat but lots of air movein. I had to pull the dash and i discovered the control throw arms were broke and the cables was dangling. so i turned the levers to all hot and put everything back together and works better now.