Question about Cars & Trucks
Could be any of the connections in the system, the blower resistor, or even the blower motor.
Posted on Jul 23, 2013
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Posted on Jan 02, 2017
This particular model suffers with head gasket problems. I have had to replace head gaskets on several of these vehicles to solve the overheating problem. The two cylinders in the rear of the engine are the problematic ones. The head gasket goes bad in that area which sends combustion gas into the cooling system. This then creates air pockets which in turn causes the engine to run hot. The air pockets then shift and as water starts to circulate again, the temperature goes back down. This cycle repeats over and over.
Solution is to replace the head gaskets.
Posted on May 25, 2008
SOURCE: My car heater works fine
this problem is most commonly caused by either a sticky air temp control blend door or a defective blend door electric actuator, this door controls the air temp at the heater/AC oulets.
Posted on Jan 14, 2009
You don't say whether the fan starts and shuts off with the bumps, or
the heat goes cold but the fan stays on. If it's the fan shutting off
and coming back, you most likely have an intermittent connection to the
blower motor somewhere at the fuse box, the fan speed control
switch or the fan motor, or a loose ground connection at the fan motor.
The fan motor is visible under the right side speaker grille on
the dash. Make sure you re-connect the short black corrugated hose to
the grill vent or you won't have defrosting on that side!
The air distribution rotary switch controls where the air goes. The fan speed switch controls exactly that: fan speed. the temp rotary switch controls the coolant temp into the heater core. You need to clarify what you mean by "Also, the dash controls for the vents won't allow me to turn up the power"
You might also have one or more of the following issues:
Posted on Mar 01, 2010
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