The engine fan? (was: My '89 Chrysler New Yorker looses power in hot weather)

Discussion in 'General Motoring' started by Tuxster, Apr 30, 2007.

  1. Tuxster

    Tuxster Guest

    Hi group,

    Thanks for the help so far with my Chrysler problem. I appreciate the

    I think I've stumbled on to something.

    With the in park and running, I lifted the hood again to look around
    and I noticed the fan blades at the front were NOT spinning! Could
    this be the answer to my problem?

    I really don't know too much about cars, but doesn't this fan help to
    keep the engine cool? Perhaps the fan motor has died? I mean,
    shouldn't the fan be running when the car is on?

    I'm hoping my problem will be solved by simply getting the fan

    Thanks again for any help.

    Tuxster, Apr 30, 2007
  2. Tuxster

    damnnickname Guest

    The fan only turns on at a set temperature of 212 degrees or if the a/c
    turns on

    Glenn Beasley
    Chrysler Tech
    damnnickname, Apr 30, 2007
  3. Tuxster

    Tuxster Guest

    Hi Glenn,

    Thanks for your response.

    I understand the a/c part, but what do you mean by "a set 212

    When under the hood hits 212 degrees? When the heat of the the engine
    hits 212 degrees? When the inside temperature of the vehicle hits 212
    degrees? Or what?

    I'm just a little unclear.


    Tuxster, May 1, 2007
  4. Tuxster

    damnnickname Guest

    when the engine coolant temperature reaches 212 degrees the engine fan is
    supposed to turn on.

    damnnickname, May 1, 2007
  5. Tuxster

    Sharon Cooke Guest

    When the engine COOLANT – liquid stuff in the car’s radiator - hits 212º
    F, the fan turns on, and/or when the AC compressor turns on. The AC
    turn-on is required for the fan to pull air thru the condenser, which is
    the radiator in front of the engine’s radiator.
    Sharon Cooke, May 1, 2007
  6. Tuxster

    Steve Guest

    Actually, on a lot of cars the fan doesn't automagically turn on the
    minute turn on the AC either. In the case of my wife's 93 LH car,
    there's a pressure sensor on the high-side (condensor side) of the AC
    system and the fan only kicks on if the high-side pressure gets too
    high. That way if you're moving and there's enough airflow to cool both
    the AC condensor and the engine WITHOUT turning on the fan, you don't
    waste the energy of driving the fan.
    Steve, May 1, 2007
  7. Tuxster

    Ron Seiden Guest

    Get the engine warmed up, and then leave it running, parked, with the hood
    open. Eventually the fan should come on (since there's no air flow otherwise
    with the vehicle sitting still. Keep an eye on your temperature gauge. If it
    gets too high without the fan coming on, you've got a problem. Could be the
    sensor (screwed into the radiator or some other point in the coolant), the
    relay, or the fan. Something like this happened to me and it turned out to
    be simply a disconnected wire.

    A friend had a car that tended to have its fan temp sensors die frequently,
    so we wired in both a pilot light and a toggle switch to the fan circuit. If
    his engine temperature got too high without the pilot light showing the fan
    was running, he could just hit the switch to turn on the fan manually.
    Ron Seiden, May 3, 2007
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