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Chrysler Repair/heater fan on 2003 caravan

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Question
HEATER FAN only runs on high

Answer
Hi Merv,
I assume this is a conventional HVAC controller unit (not automatic temp control).
The symptom you describe is associated with the blower motor resistor block having gone bad. You can replace it yourself, easily. It is located behind the glove box, which you remove by gently pressing in the sides of box to release the tabs. You will see the block held in place by 2 screws and it has two wire plugs which need to be disconnected. It should work again with a new resistor block installed.
Please read the PS below and respond to it.
Thanks
Roland

Chrysler Repair

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Roland Finston

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Get a Free Fast answer to your repair question about a Chrysler/Dodge/Plymouth car, minivan, SUV, or truck. Problems with electronically controlled engines and transmissions as well as body wiring problems are my specialty. This free troubleshoot advice forum helps you diagnose faults, minimize repair costs or do-it-yourself.

I answer questions seven days a week and respond to you in about 30 minutes. "Maxed Out" means I am answering another question, briefly unavailable, or asleep overnight, so try again later.

I have do-it-yourself experience (50+ years) and a library of 100 1982-2012 Chrysler factory shop manuals and 20 multi-manual Chrysler Corp. CD's.

I was voted "Top Expert" 2010-2015, here at AllExperts, and have answered 20,000+ questions.

Experience

Five decades as a 'do-it-yourselfer' on domestic and imported cars.

Organizations
Yahoo Autos Group called The Chrysler Lebaron Club (co-moderator)

Education/Credentials
Advanced degrees in Physics/bruised knuckles

Awards and Honors
"Top expert" of 2010, 2011, 2012, 2013, 2014 and 2015 here at Allexperts. Quickest "average response time" at Allexperts (currently no. 1).

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