No heat

WILLIS6281

MEMBER
1999 FORD E-SERIES VAN
140,000 MILES

No heat! New thermostat, coolant flush and the heater core is hot and both hoses are hot. I manually opened the blend door and no luck. It blows air it's just cold. I don't know what else to try. Is it maybe a vacuum hose? Someone help

Sunday, April 14th, 2013 AT 4:32 PM

5 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Heater core is blocked. There should be a difference in heat on both hoses

Roy

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Sunday, April 14th, 2013 AT 4:40 PM

WILLIS6281

MEMBER
3 POSTS

Thank you for responding. Should I flush the heater core then?

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Sunday, April 14th, 2013 AT 4:46 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

Give it a try with water hose. Work it back and forth.

Roy

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Sunday, April 14th, 2013 AT 4:59 PM

WILLIS6281

MEMBER
3 POSTS

I have the dash apart trying to get at the heater core but there's a screw on the heatercore cover I can't get to. It's on top in the middle and I can't get a screwdriver in there. Any suggestions? It looks like the cover is cracked at the bottom. Will that affect the heat? Also when I have the heat on full and switch from hot to cold there's no difference in the sound. Is the blend door vacuum?

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Sunday, April 14th, 2013 AT 5:18 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

I believe it is electric blend door. You already stated that you moved the blend door with no results?

The case has to be released to access that last screw

Roy