Thread: hot & cold?

  1. #1
    tatt2dwater's Avatar
    tatt2dwater is offline Junior Member
    Join Date
    Jul 2008

    hot & cold?

    My 05 Rubicon a/c & heat both come out of the defrost vent ONLY.. Whats the deal? Im sure its a relay, but how do I know which one & where? One day it worked as advertised, than the next nothing defrost only?
    PLEASE help! Mechs here are startin @ $100 hr to trouble shoot.! Thats way NO bueno!

  2. #2
    jfrabat's Avatar
    jfrabat is offline Senior Member
    Join Date
    Dec 2006
    San José, Costa Rica

    Re: hot & cold?

    I dont know about the newer Jeeps, but on my '94, this is controlled mechanically (part of it is controlled trhough the vacuum system)... I had to put a vacuum reservoir so that when I was at WOT going uphill, the hot air from outside would not come into the Jeep (driving with AC).

    '94 YJ 2.5L, Sperwinch EPi 9.0, RE 4" Std Lift, Adv. Ad. SYE, Woody Shafts, Alloy Axles, ARB Lockers, 4.88 gears, 62mm TB & Spacer, 165A Alternator, Griffin 3" Aluminum Rad, Taurus e-fan w/ DC Controller, Borla Cat-Back, Flowmaster hiflow cat, PD Ignition, 19# injectors, Adj. FPR (42PSI), MOPAR cam, Safari Snorkel, 33" BFG KM2, 15" AR wheels, Xenon H4 lights, KC Daylighters & Slimlites, Sony sound, Pavement Ends Targa Top, Hanson Front Bumper, JCR Offroad rear, AtoZ Rockers, Rhino lined Tub.

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