My 2001 Dodge Grand Caravan's front heater select switch...

Answer by kench
Submitted on 7/8/2006
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Same problem, so I replaced my resistor block only to have it go after two weeks. I talked to a mechanic/friend who had similar problems with his Sebring. The OEM resistor blocks have a fatal flaw. There's a diode in between the coils in the unit. No one, including a dodge mechanic can tell me why it's there other than suggesting that it may be there for diagnostics. The diode is quite likely the problem as it tends to fry due to heat from the engine compartment. Simple and free fix: bend the tabs on the cage and remove. Snip the diode, push the wires together and solder. If you bend the resistor coils to get at the diode, bend them back. Put the cage back on and make sure no coil is touching another or the cage. re-install and you'll be good to go. My friends Sebring has been running that way for two years, my Caravan for six months. No problems. And to think, the dodge dealer to me that my blower motor was the problem (even though it worked fine, just on high only) and quoted $800!

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Question by Mark
Submitted on 1/17/2004
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My 2001 Dodge Grand Caravan's front heater select switch suddenly only works in the high position. I checked the "fuse" and the front blower module under the hood next to the battery and they seem to be ok... I switched them with another one that I knew worked and still no fan unless the switch is on high. Any ideas on what's causing this.

Answer by Mr.Woodslee
Submitted on 1/27/2004
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Just replace the resistor block,just behind the glovebox,on the blower motor.First unplug the connector,then remove the two 5/16 screws.

Answer by Prez
Submitted on 1/9/2005
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I agree, the blower resistor relates a specific voltage to the blower fan. This could cause your condition.

Answer by jersun
Submitted on 1/22/2005
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Had the same heater blower problem on my 2002 Grand Caravan with 3 zone heating. The front automatic temperature control, behind the glove compartment failed. The part cost $70.00 from the dealer. I replaced the MOSFET power transistor, Fairchild part # HUF75353P3(also requires heat sink compound). Cost 2.72 plus shipping. Got it online from Mouser Electronics www.mouser.com. May be able to get locally.

Answer by Dusty
Submitted on 3/18/2005
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My 2001 Dodge Grand Caravan's front blower. I checked the "fuse" and the front blower module under the hood next to the battery and they seem to be ok... I switched them with another one that I knew worked and still no fan. I replaced the module block and the fan blower will not work Any ideas on what's causing this

Answer by Bill Corbett
Submitted on 11/13/2005
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I also have this exact same problem with a 2001 Dodge Sport Caravan. I replaced the resistor switch but 4 days later it went bad and now we only have the high fan speed again. What is next to replace or inspect?

Answer by J R Y 911
Submitted on 2/27/2006
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Question? I've replaced the Resistor Block three times over 2 years. What is the reason given for this problem? Has Chrysler attempted to correct the problem? Thank You!

Answer by car insurance
Submitted on 6/17/2006
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Answer by insurance auto
Submitted on 6/17/2006
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Answer by Melvin
Submitted on 9/10/2006
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Also look at replacing the under dash ACC filter that sits in the air flow Pass side left side Bosch ACC Cabin Filter DW3028310602R restricted air flow may make resistor block fail due to restricted air flow that cools the resistor block

Answer by FIY Mike M
Submitted on 10/25/2006
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I had a 2002 with the same problem, easy to get to, right behind the glove box. Empty contents of glove box (or it'll dump on the floor), squeeze sides inward enough to get the stops tabs on each side to clear. Let the glove box hang down, and get to changing it.

Answer by chloe bo boey
Submitted on 12/23/2006
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take ur car 2 the car doctor.!!!!!!!! if u dont wanna freeze.

Answer by george
Submitted on 12/27/2006
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Many thanks to mr. Woodslee. Saved me a lot of time and effort. George

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