Sounds to me like your thermostat may be stuck open. When your going slow or idleing the motor will warm up and more hot water will be circulated through the heater core. When you are running at a higher rpm, the motor is cooler(because the water is circulated faster by the water pump) and the heater core gets cooler water instead of warmer water. I would guess that the thermostat is either stuck in the open position or is missing all together. So, does your temp guage show you at about 196 degrees all the time or does it drop as you speed up? The only way to check the thermostat is to pull it out and place it in a pan with water and heat it on the stove. Put a thermometer in the water and as the temp reaches about 195, the thermostat should start to open. Of course if it is bad, it may be open and stay that way through all this. Since they don't cost that much, its easier to just replace it. .
I found the resister, it is a small module held by 2 small screws on the base of the heater blower behind the glove box.
The year, make and model info would help but generally the heater blower motor resister is located close by the heater blower motor.
Remove the HVAC rear module auxiliary assembly.Disconnect the electrical connectors from the rear blower resister auxiliary.Remove the air outlet duct from the rear blower motor controller auxiliary.Remove the screws from the blower motor rear resister auxiliary.Remove the rear blower motor resister auxiliary.Replace the resister and install new thermal gasket.................
I have an 89 Delta 88 and if you have Electronic Climate Control there is a control module located just right(passenger side) of center at the firewall. It is in the same location as the blower fan resister assembly on a car with standard a/c controls.
your motor resister is bad or might be called the climate control module
No. An AC/heater control module is a computer that controls and automates the operation of the heating, ventilation, and air conditioning systems (HVAC).The blower resistor enables the blower motor to change the speed of the fan.
No such part exists on a Durango.
On the auto temp unit it is called a blower power module.
blower motor module
You have to remove the fuel tank as the filter is part of the pump module in the tank.
Something called a blower control module takes the place and is found in the hole where you would find a blower resistor, so there isn't a blower resistor in that vehicle. As far as the blower control module is concerned, the module is serviced as a unit. No part can be fixed or replaced. This is not to be confused with the control head in the dash. The blower control module is held into the heater box with two 8mm screws outside the firewall under the hood, where you would normally find the blower resistor pack.
You probably need a new electronic resister module. The module is located in the blower/heater box. To access it you will need to remove the maxifuse center (the same power strip that holds the relay you removed). Don't panic - its only retained by three nuts. Keep in mind that another component could have caused the resister module to go bad. Be prepared to purchase a new blower motor at the same time.
only if its a leap year
You have to remove the wipers and the cover that's underneath them. There is a hole on the passenger side that allows access to the resistor from under the hood.
Open hood . Disconnect blower module located near blower fan. Disconnect, if blower shuts off, repalce module
i think what you are refering to is a blower staying on all the time, if so the blower motor has shorted the control module, you need to replace the blower motor and control module.
Under the dash, blue module to the side of the steering column.
sounds like a defective blower module
There is none - usually it is the module in the top of the heater / blower box (resistor module) that is the problem.
The 2000 Chevrolet Corvette blower motor control module can be found behind the passenger side dashboard. You will need to remove the dashboard in order to access the module.
The front blower motor power module is under the dash on the passenger side. It bolts to the bottom of the HVAC housing.
The fuse electrical plug should be replaced along with the resistor module and the blower motor (the blower could be pulling too many amps).There is also another fuse box, you have to remove the glove box. It is a white rectangular resister about 3 inches long.
No. The fuel filter on a 1999 Dodge Durango is in the fuel tank, part of the pump module.
Behind glove-box, behind engine control module