No heat

1999 FORD E-SERIES VAN

140,000 MILES

WILLIS6281

MEMBER
3 POSTS
FOLLOW

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

Apr 14, 2013 at 4:32 PM

ASEMASTER6371

✓ASE Certified Mechanic
52,796 POSTS

heater core is blocked. there should be a difference in heat on both hoses

Roy

Apr 14, 2013 at 4:40 PM

WILLIS6281

MEMBER
3 POSTS

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

Apr 14, 2013 at 4:46 PM

ASEMASTER6371

✓ASE Certified Mechanic
52,796 POSTS

give it a try with water hose. work it back and forth.

Roy

Apr 14, 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?

Apr 14, 2013 at 5:18 PM

ASEMASTER6371

✓ASE Certified Mechanic
52,796 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

Apr 14, 2013 at 6:04 PM

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