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Old 08-02-2013, 02:14 PM   #1
Steeljag's Avatar
Join Date: Aug 2012
Location: Central Fl.
Posts: 510
AC fan

Being my TJ is a weekenend vehicle for me along with a MC, it does sit sometimes for awhile. A few weeks back I pulled it out to head to a party and the AC fan was not working.

Compressor was working, just not the fan on any setting. It used my hand as a technical instrument and slapped the top of the dash board and bingo it worked.

Well, it has worked fine the last few weeks until today. I took it lunch with AC blowing, when I came out and cranked it up.....NO fan again??

The compressor is working and while driving I can feel cold air at the vents.....but the fan is out.

Any thoughts on why the fan would be part time? Solutions? And I hope it does not involve taking the dash apart.

Thanks for any help!

2014 Jeep Wrangler JKR
Copper Canyon
Yeah,I gotta change the Pic
Love the Rubicon, but already miss the TJ.
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Old 08-03-2013, 09:46 PM   #2
RUBI 4 MY MRS's Avatar
Join Date: Feb 2011
Location: California/Nevada
Posts: 1,310
Most of the time when you lose all speeds at one time it is a loss of ground to the blower, usually at the mode switch or the 3 wire to it. If it is a bad connection sometimes it will be intermittent. Check these links for testing & photo of a bad connector.

Look at the 2nd photo here of a bad switch.

Here for melted wires, look at yours carefully since they are not always this bad but still losing ground connection.

If the wiring & switch look good you can test the rest of the circuit by removing the connector & putting a jumper between the middle & bottom (2 heavier) wires. If you get all 4 blower speeds with the key on then the mode switch is bad.

'05 Rubi TJ Unlimited
'93 Toyota 4Runner
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