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The heat does not get warm when I turn the temperature all the way up and allow it to run for several minutes. The fan blower is working, the fuse is not blown, what could it be?

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  • Cars & Trucks Master
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The way your interior heater works is by using water from the engine cooling system.
Behind the dashboard is a small version of the engine radiator and its plumbed into the cooling system and to control the water flow is a valve thats connected to the dial on the dash.
It seems the connection between that valve and the dash control is your issue

Posted on Dec 28, 2016


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SOURCE: 1998 BMW 328i heater/AC blower is not running

You have clean the blower unit , may be its dirty then . and then check the blower resistor unit for malfunction.

Posted on Aug 04, 2009

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SOURCE: 2005 Chrysler Pacific-no heat and no fan-display works

replace the complete heater control unit was my only fix! over $700 in Cnada for control.

Posted on Mar 05, 2010

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SOURCE: Heater blower resistor gets very hot

its got a bank of resistors and it will get hot. The fuse blowing out may just be a fluke thing. Replace the fuse (with the proper size)and run it normally, The fuse is in the system and is designed to burn out long before any real damage can occur,

Posted on Mar 29, 2010

Testimonial: "Thanks stevemcgraw1. I am at ease now. Going to re-check the value of the fuse with the manual and check the draw from the blower. Cheers!"

  • 14036 Answers

SOURCE: Fan blower started running full speed, ...


Posted on Jun 07, 2010

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SOURCE: Blower does not work on my 2006 Chevy Silverado truck

What a piece of ****! The foreign cars don't have this problem, but buy and american truck that they have been making forever and you'll get a piece of ****. Why? So they can take you to the cleaners and cry when no one wants to buy their product! They know it's bad and they choose not to fix the problem! Good buisness practices! They ****!

Posted on Oct 25, 2010

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Start the car and turn the air conditioning on. Allow the engine to run a few minutes so the air can cool. Check to make sure you have the proper buttons selected. This simple step may uncover the root of the problem.

  • 2 Adjust the air controls on the dashboard to see how they are working. If the controls move the way they should with the proper amount of resistance and stopping in the right places but have effect on the air, then the problem may as simple as a blown fuse. If the controls are not working at all, then the problem is in the control panel.
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