Heater Cores and Blower Fans
Chrysler 300 Series
Chevy Express

Your heater in your 2001 express van does not want to shut off any ideals?


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2009-12-23 14:35:23
2009-12-23 14:35:23

its the blower motor resistor ... located under the hood on passenger side ... there is two screws holding it in .... it has a bunch of wires coming out of it ....


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If you have your own water heater there should be a shut off at the heater. If not I would look under the kitchen sink. There may be shut off valves at each fixture. If there is a central water heater in the basement, there would be a shut off to each unit.

Run your vehicle with the heater on. Let it warm up. Shut it off, then open up your hood. You'll see two heater hoses running into the firewall. The hot one will be your inlet line.

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All modern heater will shut off automaticly if they get tilted.

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There is no shut off valve. But you can by pass the heater core by disconnecting the 2 hoses going to the heater core. And connecting them together. The only problem with this is that you won't have any heat in the winter.

You may want to check the heater blower resistor, its behind the glove compartment

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There should be a shut off on the cold water line at the tank. If not, you have to shut the whole house off.

In every home thee are a number of shut-off valves. Where the water pipe enters the house is the main shut off, usually beside the PRV, a bell shaped device for regulating the house pressure. This main cold line will then branch off to the water heater, bathrooms and kitchen. Each faucet and the water heater and the toilet will have a shut-off valve. The hot water line comes out of the top of the heater and goes to bathrooms and kitchen. Each hot faucet also has a shut-off valve under it.

If you have a water heater in the unit there may be a shut off before that, usually at the floor or follow the cold side to a shut off. There may be an access panel behind the shower, possible in a hall closet but not always and there might be shut off valves there, but not likely. If your water heater is in the basement, there should be a shut off for each unit there.

If it is windy outside, you may be getting just enough of a breeze to blow out the pilot light -even though the covers are shut. My heater is in the garage, and even w/ the garage door shut and the covers on the heater shut, very windy weather can still cause enough of a draft to blow out the pilot. You could try to find something to block drafts around the heater such as a hot water heater blanket.

The heater control valve is used to shut off hot coolant from entering the core when the heater is in the off position. A heater control valve can be actuated by either a vacuum line or a cable from the vacuum heater control valve to the heater core. This hose should be warm; if not the heater control valve is stuck and needs to be replaced

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As the water begins to flow within the system, the components inside the heater compartment ( the pressure switch)senses that flow and if your heater is calling for heat it will fire. When that water ceases to flow those same sensors tell the heater to stop firing. Built in safety devices. Ken

Yes you need to shut off the Main water valve. Usually found in the basement or outside the house near the meter. Also you need to shut off the Gas valve located at the water heater, or the Breaker located in the breaker box/ fuse panel. Sometimes the water heater will have its own Switch box, located on the power wire

Tubs usually do not have shut off valve for them. You have to shut off the main supply. Depending on how the house is plumbed, you may be able to shut the cold supply to the water heater and that will shut off both the hot and cold or the main line where it comes into the house.

You will get some back pressure from the water heater. It will come out of either the hot or cold. Shut the tank off if there is a shut off there.

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