bcrosby
20+ Year Contributor
- 75
- 0
- Jul 11, 2002
-
Des_Moines_Iowa
What would make my heater not blow hot? Now that its getting cold out ive noticed that my heater just doesnt blow hot. Could it be the thermostat? Any ideas would be appriciated.
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The thermostat must be installed with the heat sensing copper element side (usually has the opening temp engaved on it's end) down into the engine (triangle support structure up) and a NEW gasket between the thermostat and the thermostat housing (not under the T-stat). There's usually a groove the T-stat fits into on the engine side. I also lightly coat the gasket with Permatex Ultra Blue RTV Silicone Gasket Maker to prevent any leaks. Remember to only torque those bolts to 12-14 ft-lbs (sounds like you found out the hard way already).im guess the gasket i (resused) is bad? but what else would this be? is there a wrong way to install the thermostat? cause i wasnt sure if i had it at the right angle
Yeah its easy to flush your heater core, remove the two lines going into the fire wall and blast a hose thru it for a minute and wash it out..
And the dim lights? its only on the center dash? gauges are fine? did you play with your dimmer?
Hmmm dim lights sound like a short, i would check your fuses with a voltmeter and see how much power its drawing. My truck's heating/ air motor went bad and it melted, causing it to draw massive amounts of power because of it rubbing on the housing.