5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

Intermittent fan on AC/heater

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Old 09-20-2012, 09:43 AM
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Default Intermittent fan on AC/heater

The fan/blower on the heater/ac has become intermittent. 1st started as once, then no problem for 4 months, then about once a month, it would only happen for a short while. Now it is happening maybe a couple a times a week and instead of for a few minutes or an hour, yesterday it was all day. Now this morning blowing like a champ.

Any suggestions .
 
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Old 09-20-2012, 12:36 PM
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Check the pig tail at the resistor they like to melt.
 
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Old 09-20-2012, 01:15 PM
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I'm not much of a mechanic. Where would I look for the resistor pigtail.
 
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Old 09-20-2012, 08:29 PM
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mine would only blow on full blast when i purchased it.....my problem was the resistor itself.....$53 and 5 mins ....problem solved......stick your head under pass side of dash,follow wires to heater box,2 small screws (dont remember size),resistor out!....mine was cracked in 3 places with a chunk missing.....no melted plug though
 
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