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1989 740 gl wagon themo contact switch on the radiator w/two wires ? 700

posted by  someone claiming to be Steve on  Wed Jun 8 17:13 CST 2005 [RELATED]

Can some one please tell me how to chance out this part, its due to my elect fan in my front grill, when i hook it up straight up to the battery the fan comes on. The wires go to this plug looking switch /with/two wire contacts It is at the top side of the raderator (pass side) How do i change this part out ? If you dont it before please let me know how....... .... Steve / Austin Texas








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    1989 740 gl wagon themo contact switch on the radiator w/two wires ? 700

    posted by  spasske on  Thu Jun 9 06:38 CST 2005
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    last visit: Thu Oct 23 10:11 CST 2014
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    I can't think of anyone mentioning a bad temp sensor on the radiator before. It does require quite a bit of heat for it to kick in. The only time mine does is when it's very hot outside, the AC is on, and idling in traffic.
    --
    Paul NW Indiana '89 740 Turbo 110,000








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    1989 740 gl wagon themo contact switch on the radiator w/two wires ? 700

    posted by  aleekat on  Wed Jun 8 20:42 CST 2005
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    last visit: Fri Oct 24 13:19 CST 2014
    [RELATED]

    If you don't think its working properly. Most Volvos, it takes alot to kick on the fan..








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    1989 740 gl wagon themo contact switch on the radiator w/two wires ? 700

    posted by  turboman at turbovans on  Wed Jun 8 17:35 CST 2005
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    hi.
    well..
    if you are asking how to change that sensor in the rubber seal in the radiator....top right side of the radiator...
    you pry it out of it's rubber seal.

    a very, very HOKEY thing....dubmest thing on the whole car almost.
    the rubber seal fails eventually,
    gets pinched esaly.

    i recently bought a great looking after market radiator, new. It
    had a plastic plus in that location.
    I pry that out, I can't get my sensor in....or when I do I pinch the rubber seal.
    so I put in a guneuine volvo new rubber seal...same thing ...it leaks.
    went thru that about 4 times.

    finally went to a NAPA part store , bought an expandable 1/2 inch plug...put that in. AT least it doesn't leak now.
    sensor now hangs by it's wires secure by a wire tie.

    scott







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