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-   -   At my wit's end. (http://www.wranglerforum.com/f282/at-my-wits-end-142745.html)

yober 02-27-2012 08:41 PM

At my wit's end.
 
In my long and arduous battle to get heat back into my cabin, I have:

Swapped out the fan switch;
Swapped out the blower motor relay;
Hooked up the fan directly to the battery to see if it was dead;
Checked all the connections to see if any were cooked;
Swore a lot.

You see, one day I turned it on and heard a plunk, not unlike a relay switching, and then, no more fan, not on any speed setting. If it were the blower resistor malfunctioning, I'd still get a high speed on every setting.

Should I just bail and leave it to a professional? What haven't I tried?

Frenz 02-27-2012 09:08 PM

ummm.. look at the fuse?

neverfastenough1 02-27-2012 09:26 PM

Aside from the fuse you already replaced my next guess, the speed selector. Did you check for voltage at the fan or pull the fan and hook it directly to the battery to see if it works?

yober 02-27-2012 09:33 PM

Forgot to say, "Checked fuses."

Swapped the speed selector.

Yes, the blower spun its little heart out. I suppose it might not be getting power TO it, though. Anybody got an easy way to trace through the harness for power? Suggestions for a decent (re: not overpriced) multimeter?

neverfastenough1 02-27-2012 09:37 PM

I just bought one from WallyWorld.

herbc 02-28-2012 07:46 AM

Check out this thread. Mine is a 2000 TJ also.

http://www.wranglerforum.com/f5/test...or-141499.html

Hope this helps.

6rings 02-28-2012 07:54 AM

I have a 2000 and mine did the same thing, I changed resistor it had gotten a leaf in it ???? And shorted it out, then the fan quit so changed it ( it worked with a direct hook to battery) but....then the switch wouldn't work after installing new fan??? So I broke down and took it to the dealer and they found the wire had heated up when resistor shorted and caused a problem with fuse....FYI

C.L. 02-28-2012 07:56 AM

Quote:

Originally Posted by yober (Post 2081965)
Suggestions for a decent (re: not overpriced) multimeter?

Home depot has a whole shelf of them from $5 for an analog volt meter to $200+ for the one that does your taxes for you. I got a decent digital AC/DC volt, ohm, amp meter for ~$30 a couple years ago that is still going strong.

mrobinso 02-28-2012 08:16 AM

You sure the power supply plugs to the right of the HVAC vaccuum tubes are all properly connected? If so, I would go ahead and pull out your blower motor and take a look at it. This is an EXTREMELY EASY thing to do and well worth the 15 minutes it takes. Visually inspect the motor, visually inspect the plug (often a source of problems due to corroded plugs).

I just recently overcame my heater issues after about 1.5 months of no heat. It was a huge relief! I am sure you will figure it out soon. Although, figure it out before Spring otherwise you will no longer have an incentive!

Badass_TJ 02-28-2012 10:11 AM

Quote:

Originally Posted by mrobinso (Post 2083094)
You sure the power supply plugs to the right of the HVAC vaccuum tubes are all properly connected?


id take a good look at that, pull the plug off and look at it, make sure its not melted, when mine stopped working that was the problem, you should also be able to test the wireing from the switch to the fan, pull off the plug on the speed switch and make a jumper wire, with a multimeter you should be able to find power (if there is any) and jump a wire to see if the fan works..

obidya 02-28-2012 01:11 PM

resistor pack? yes you "should" be getting a high on every setting, but its also possible its failing in a way thats killing the power loop.... maybe... ?

yober 02-28-2012 05:34 PM

Quote:

Originally Posted by Badass_TJ (Post 2083450)
id take a good look at that, pull the plug off and look at it, make sure its not melted, when mine stopped working that was the problem, you should also be able to test the wireing from the switch to the fan, pull off the plug on the speed switch and make a jumper wire, with a multimeter you should be able to find power (if there is any) and jump a wire to see if the fan works..

Would it narrow things down if I said that the mode switch works just fine?


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