low heat

MotoLappa · 01-03-2008, 08:53 PM

My wifes 98 Blazer has a heater issue. Warms up to normal temp blow semi warm heat but not as hot as it should. Both the lines to the heater core seam to be the same temp. No coolant loss. I am going to do a flush on the heater core and swap the T stat with an new one. Am I on the right track? Any advice?

STXS10 · 01-04-2008, 05:34 PM

Yes, back flush the heater core.

Before I did my 99 Blazer, both heater core lines were about the same temp as well with similar problems like you explained. Once I back flushed it and what not, it was working again.

MotoLappa · 01-04-2008, 07:17 PM

Quote: Originally Posted by STXS10

Yes, back flush the heater core.

Before I did my 99 Blazer, both heater core lines were about the same temp as well with similar problems like you explained. Once I back flushed it and what not, it was working again.

Thanks for the reply. I will be doing it tomorrow.

STXS10 · 01-05-2008, 01:34 PM

yeah, prepare to get wet and have some gunk flow out of the lines. Cover your Alternator

01-03-2008, 08:53 PM	#1
MotoLappa Registered User Join Date: Feb 2006 Posts: 97 Location: Lancaster, PA User is: OffLine	low heat My wifes 98 Blazer has a heater issue. Warms up to normal temp blow semi warm heat but not as hot as it should. Both the lines to the heater core seam to be the same temp. No coolant loss. I am going to do a flush on the heater core and swap the T stat with an new one. Am I on the right track? Any advice?
	[Reply w/Quote]

01-04-2008, 05:34 PM	#2
STXS10 FuelJunkie.com Age: 26 Join Date: Dec 2003 Posts: 682 Location: San Antonio, Texas User is: OffLine	Re: low heat Yes, back flush the heater core. Before I did my 99 Blazer, both heater core lines were about the same temp as well with similar problems like you explained. Once I back flushed it and what not, it was working again.
	[Reply w/Quote]

01-04-2008, 07:17 PM	#3
MotoLappa Registered User Join Date: Feb 2006 Posts: 97 Location: Lancaster, PA User is: OffLine	Re: low heat Quote: Originally Posted by STXS10 Yes, back flush the heater core. Before I did my 99 Blazer, both heater core lines were about the same temp as well with similar problems like you explained. Once I back flushed it and what not, it was working again. Thanks for the reply. I will be doing it tomorrow.
	[Reply w/Quote]

01-05-2008, 01:34 PM	#4
STXS10 FuelJunkie.com Age: 26 Join Date: Dec 2003 Posts: 682 Location: San Antonio, Texas User is: OffLine	Re: low heat yeah, prepare to get wet and have some gunk flow out of the lines. Cover your Alternator
	[Reply w/Quote]