The heater does not blow hot air

14CARETS

MEMBER
2000 CHEVROLET BLAZER
10,000 MILES

Have checked the thermostat, fan motor blows, one hose is hot one hose is not going into the heater core.

Thursday, December 29th, 2011 AT 2:06 AM

5 Replies

SATURNTECH9

MECHANIC
30,869 POSTS

You should have two hoses going into the heater core. Did someone bypass the heater core?

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Thursday, December 29th, 2011 AT 2:10 AM

S15RACERV8

MEMBER
4 POSTS

I have had the same problem found that heater core is plugged, I removed hoses and flushed it out and that fixed the problem, but really need to flush it good or it will plug again

Was this

answer

helpful?

Yes

No

Saturday, February 25th, 2012 AT 5:45 PM

SATURNTECH9

MECHANIC
30,869 POSTS

Sounds like the person that asked the question has a bypassed heater core because there old one was leaking. So flushing the leaking one wont help. But thanks for sharing your expernice with everyone.

Was this

answer

helpful?

Yes

No

Sunday, February 26th, 2012 AT 2:49 AM

S15RACERV8

MEMBER
4 POSTS

It actually reads that both hoses are hooked up to heater core, so I doubt there was a bypass put in and to change a heater core in blazer is a 14 hours job because the dash has to be removed to do it.

Was this

answer

helpful?

Yes

No

Sunday, February 26th, 2012 AT 7:45 PM

SATURNTECH9

MECHANIC
30,869 POSTS

Please read again it says one hose is hot and that one hose is not going into the heater core. So it sounds like it was bypassed so without the user that asked the question answer we will never know. So if you think that reads as there both hooked up that would be your idea of what they were saying. But to me it just doesnt read that way. Thanks for using two car pros.