Dodge Caravan AC Heater Control only works on high mode?

This problem is very much noticed and seen on many other car models too.
The most common cause is that an electrical device called the blower motor resistor block, has failed. This device provides all the slower speeds. It is generally mounted in the HVAC [Heating, Ventilation & Air Conditioning] box, very close to the blower motor. FYI, we mechanics call the fan motor inside the cabin the blower motor. The electric fan motor behind the radiator is called the cooling fan motor.
If the resistor block is OK, then you have either a bad fan speed switch or a melted electrical connector at that switch. 95% of the time, the resister block is the problem.

This basic details will help.Thanks.

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If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

For Instructions regarding All types of car heater problem repairs.See the list mentioned below:---------------

All types of Car heater Problem troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-heater-problem.html

Blower only blows warm air ?

http://schematicsdiagram.blogspot.com/2011/11/blower-only-blows-warm-air.html

AC cool air enters only the passenger compartment even with the heat control turn all the way?

http://howtobyme.blogspot.com/2011/11/ac-cool-air-enters-only-passenger.html

Saturn Car Blower motor Only works on High?

http://howtobyme.blogspot.com/2011/11/saturn-car-blower-motor-only-works-on.html

No hot air from defrost vents?

http://howtobyme.blogspot.com/2011/12/no-hot-air-from-defrost-vents.html

Radiator replaced but still Car is over heating?

http://howtobyme.blogspot.com/2011/12/radiator-replaced-but-still-car-is-over.html

Ford ranger heater blows cold air?

http://schematicsdiagram.blogspot.com/2011/12/ford-ranger-heater-blows-cold-air.html

Audi A4 blower motor blows Warm Air?

http://howtobyme.blogspot.com/2011/12/audi-a4-blower-motor-blows-warm-air.html

Heater stuck on defrost?

http://howtobyme.blogspot.com/2011/12/heater-stuck-on-defrost.html

Where is Blower motor resistor located on 2006 Ford F 250?

http://schematicsdiagram.blogspot.com/2011/12/where-is-blower-motor-resistor-located.html

Where is Blower motor resistor located on 2006 Ford F 250?

Blower motor resistor controls the blower motor fan speeds.
It is just inboard [towards the center of the truck] of the blower motor. You have to look behind the Air Conditioning accumulator. The blower resistor is mounted with two screws and has an electrical plug connected to it.

Buy proper branded auto parts,instead on local non branded parts.The Original parts lasts long and give good results.

This results will help.Thanks.

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For Instructions regarding All types of car heater problem repairs.Check the list below :----------

All types of Car heater Problem troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-heater-problem.html

Blower only blows warm air ?

http://schematicsdiagram.blogspot.com/2011/11/blower-only-blows-warm-air.html

AC cool air enters only the passenger compartment even with the heat control turn all the way?

http://howtobyme.blogspot.com/2011/11/ac-cool-air-enters-only-passenger.html

Saturn Car Blower motor Only works on High?

http://howtobyme.blogspot.com/2011/11/saturn-car-blower-motor-only-works-on.html

No hot air from defrost vents?

http://howtobyme.blogspot.com/2011/12/no-hot-air-from-defrost-vents.html

Radiator replaced but still Car is over heating?

http://howtobyme.blogspot.com/2011/12/radiator-replaced-but-still-car-is-over.html

Ford ranger heater blows cold air?

http://schematicsdiagram.blogspot.com/2011/12/ford-ranger-heater-blows-cold-air.html

Audi A4 blower motor blows Warm Air?

http://howtobyme.blogspot.com/2011/12/audi-a4-blower-motor-blows-warm-air.html

Heater stuck on defrost?

http://howtobyme.blogspot.com/2011/12/heater-stuck-on-defrost.html

Temperature gauge went up?

Very common problem,lots of car user facing this.
Get the coolant level checked,get the Coolant temperature sensor checked.Do you notice any overheating?
If all this checked ok,then head gasket is issue.
The problem is usually the head gasket. This will cause refrigerant being vaporized inside the engine, loss of compression and overheating.
Same symptoms can be caused by a cracked engine block, but this second fault is far less common.
If the problem is the head gasket, better replacing the gasket rather than the whole block. If the replacement is done by a trained and experienced mechanic, the engine will be fine after the repair.
Replacing the head gasket is not a difficult job, but it takes a lot of work and quite enough time. All fluids must be bleed, the air intake, valve cover, timing cover, belt and head must be removed to replace the head gasket. The head gasket itself is not an expensive part. Labor to replace the gasket is expensive.
If the head gasket is the problem, better replacing the head gasket. Replacing the engine is more expensive, and you do not get any warranty about possible second hand engine block failures.

This details will help.

Thanks.

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For more car over heating and head gasket related help solutions,follow the list below:----

HOW TO REPLACE A HEAD GASKET

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-head-gasket.html

How to replace Exhaust Manifold on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-exhaust-manifold-on.html

How to replace Intake Manifold on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-intake-manifold-on-acura.html

How to replace Cylinder Head On Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cylinder-head-on-acura.html

Water pump replacing procedure for all vehicles?

http://technoanswers.blogspot.com/2011/11/water-pump-replacing-procedure-for-all.html

All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html

Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

Car runs hot in Traffic?

http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html

Car engine Overheats and transmission starts slipping?

http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html

How to replace heater core for All car models?

Click the link below:---

http://technoanswers.blogspot.com/2011/11/how-to-replace-heater-core-for-all-car.html

How to Flush Heater Core?

http://schematicsdiagram.blogspot.com/2011/12/how-to-flush-heater-core.html

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All types of Car heater Problem troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-heater-problem.html

Blower only blows warm air ?

http://schematicsdiagram.blogspot.com/2011/11/blower-only-blows-warm-air.html

AC cool air enters only the passenger compartment even with the heat control turn all the way?

http://howtobyme.blogspot.com/2011/11/ac-cool-air-enters-only-passenger.html

Saturn Car Blower motor Only works on High?

http://howtobyme.blogspot.com/2011/11/saturn-car-blower-motor-only-works-on.html

No hot air from defrost vents?

http://howtobyme.blogspot.com/2011/12/no-hot-air-from-defrost-vents.html

Radiator replaced but still Car is over heating?

http://howtobyme.blogspot.com/2011/12/radiator-replaced-but-still-car-is-over.html

Ford ranger heater blows cold air?

http://schematicsdiagram.blogspot.com/2011/12/ford-ranger-heater-blows-cold-air.html

Low heat problem on Plymouth Breeze?

Basically this problems are faced on many other vehicles too.
First thing to check is most possible causes for this problem.

1) First check is the fan running.
2) Next check coolant level.
3) Another possibility can be faulty thermostat.
4) Can be problem with blower motor resistor.

But once you confirm,that this above mentioned possibilities are checked ok then,usually this problem is caused by a partially plugged heater core, with the car fully warmed up, can you feel the heater hoses where they go through the firewall, and see if both are hot, or is one hot and the other just warm?
Does the temp gauge on the dash go down when driving also?
If its same then there is a flow problem through the heater core, and this will be worse when driving, you need to first try and flush the heater core.
You can use Prestone radiator flush, but first disconnect the heater hoses, and pour it directly into the heater core and let it sit for 2 hours, then back flush with water, this usually restores full heat, if it doesnt, then the core will need to be replaced.
The problem is heater core in that case.
The details will help you to confirm the problem.

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Car AC Blows Warm Air ?

http://technoanswers.blogspot.com/2011/10/car-ac-blows-warm-air.html

How to test AUTO AC pressure?

http://howtobyme.blogspot.com/2011/10/how-to-test-auto-ac-pressure.html

AUTO Air Conditioning Troubleshooting?

http://technoanswers.blogspot.com/2011/10/auto-air-conditioning-troubleshooting.html

AUTO A/C COOLING PROBLEM?

http://technoanswers.blogspot.com/2011/10/auto-ac-cooling-problem.html

Fixing refrigerant leak?

http://howtobyme.blogspot.com/2011/10/how-to-fix-refrigerant-leak.html

How to locate Car AC Refrigerant leak?

http://technoanswers.blogspot.com/2011/10/how-to-locate-car-ac-refrigerant-leak.html

CAR AC INTERMITTENT COOLING?

http://technoanswers.blogspot.com/2011/10/car-ac-intermittent-cooling.html

What causes INTERMITTENT COOLING on Car AC system?

http://technoanswers.blogspot.com/2011/10/what-causes-intermittent-cooling-on-car.html

Car AC making Noise?

http://technoanswers.blogspot.com/2011/10/car-ac-making-noise.html

BAD ODOR ON CAR AIR CONDITIONER?

http://technoanswers.blogspot.com/2011/10/bad-odor-on-car-air-conditioner.html

How to Recharge Car's Air Conditioner

http://repairhelpcenter.blogspot.com/2011/10/how-to-recharge-cars-air-conditioner.html