i'm cold

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Oct 29, 2008 | 06:44 PM

mike

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Seasoned Member

Joined: Aug 2008

Posts: 440

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From: Bowling Green, KY

Year: 1989

Model: Cherokee

Engine: 4.0

i'm cold

heat blows warm but only if on the gas. is there an easy way to clean out the heater coil?

Oct 29, 2008 | 06:50 PM

BlueXJ

Renix Super Guru

Joined: Mar 2008

Posts: 24,653

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From: In yourz postez fissin jurr spelinzs

Year: 1990XJ/1989MJ

Model: Comanche

Engine: 4.0L Renix

Just a GENTLE flush with a garden hose. Don't get aggressive or you will have leaks afterward.

Oct 29, 2008 | 06:58 PM

COSXJFAN

Do you hear banjos?

Joined: Apr 2008

Posts: 9,644

Likes: 6

Model: Cherokee

Sounds like it could be a vacuum leak. Heater control valve, flap in the vent system?? May want to check that too!! Good luck!!

Oct 29, 2008 | 07:10 PM

BlueXJ

Renix Super Guru

Joined: Mar 2008

Posts: 24,653

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From: In yourz postez fissin jurr spelinzs

Year: 1990XJ/1989MJ

Model: Comanche

Engine: 4.0L Renix

Quote:

Originally Posted by COSXJFAN

Sounds like it could be a vacuum leak. Heater control valve, flap in the vent system?? May want to check that too!! Good luck!!

Thanks COS I was just responding to the heater core flush. You are probably right the vacuum hose is prolly off the little diverter motor.

Oct 30, 2008 | 07:10 AM

120mm

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Joined: Sep 2008

Posts: 149

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From: Afghanistan

Year: 95

Model: Cherokee

Engine: 4.0

And that little diverter valve is stupid cheap, at $20, and takes about 5 minutes to replace.

First check the vacuum hose, then, if that don't work, try the valve.

Oct 30, 2008 | 07:35 AM

BlueXJ

Renix Super Guru

Joined: Mar 2008

Posts: 24,653

Likes: 19

From: In yourz postez fissin jurr spelinzs

Year: 1990XJ/1989MJ

Model: Comanche

Engine: 4.0L Renix

Let us know what you find Mike.

Oct 30, 2008 | 08:50 PM

mike

Thread Starter

Seasoned Member

Joined: Aug 2008

Posts: 440

Likes: 0

From: Bowling Green, KY

Year: 1989

Model: Cherokee

Engine: 4.0

will do guys. thanks for the input

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