2001 dodge diesel ,heater fan and control problem - Automotive Wiring and Electrical


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2001 dodge diesel ,heater fan and control problem

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Auto Repair Home>> Automotive Repair>> Automotive Wiring and Electrical

bill15080
New User

Nov 28, 2011, 9:37 PM

Post #1 of 4 (2356 views)

2001 dodge diesel ,heater fan and control problem	Sign In

2001 dodge diesel heater fan runs but no air circulates to desired areas, acts like air can't get through the fan to get distributed to windshield or feet or anywhere

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 29, 2011, 12:50 AM

Post #2 of 4 (2325 views)

Re: 2001 dodge diesel ,heater fan and control problem	Sign In

Question first - Do you hear it trying to change airflow direction mode at all?

My WAG is you have debris from a rodent that plugged up the heater box, squirrel cage of blower type issue??

T

bill15080
New User

Dec 1, 2011, 1:29 PM

Post #3 of 4 (2297 views)

Re: 2001 dodge diesel ,heater fan and control problem	Sign In

IT IS WORKING TODAY, INTERMITTENT, SO I DON'T THINK THE DOORS ARE BROKEN..VACUUM ISSUE POSSIBLY...WAITING FOR IT TO SCREW UP AGAIN SO I CAN DISCONNECT THE VACUUM LINE AND RECONNECT TO SEE IF IT WORKS THEN>>?? MAYBE A CHECK VALVE IN VACUUM SYSTEM? I HAVE A WORKING VACUUM PUMP ON THE POWERSTEERING PUMP...I CAN FEEL THE VACUUM...ANY IDEA'S WOULD BE APPRECIATED TY BILL

In Reply To

NO... NO RODENTS YET(:>))

(This post was edited by bill15080 on Dec 1, 2011, 1:32 PM)

Tom Greenleaf
Ultimate Carjunky / Moderator
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Dec 1, 2011, 1:54 PM

Post #4 of 4 (2290 views)

Re: 2001 dodge diesel ,heater fan and control problem	Sign In

Intermittent can be tough. Mopars not my strongest suit but if doors are vacuum controlled and could be most have a reservoir of some type probably plastic but may not with a mechanical vacuum pump set up. No matter - look for and at all vacuum hose, many are first rubber to plastic line that at a glance looks like a wire.

If vacuum controlled and a split in something it would default to near always just defrost ducts with a total lack of supply. Follow any line that's vacuum going into heater/A/C box or thru firewall. Those do get brittle or burn, rub like things can along the way and some azzhole engineers place the dang hoses near dipsticks and they get broken easily doing something else

If electrically actuated doors I don't find broken actuators commonly intermittent but you may hear a stripped nylon gear trying to work and can't, then work for a while?

T

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