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1998 Chevrolet Venture Question: why don't the cooling fans come on?

 

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c_catron, Iola, KS, June 11, 2012, 11:20
 Rookie

the temperature gauge looks like its getting hot, but the fans dont come on unless you turn on the air conditioner. i have changed fan relays, thermostat, and coolant temperature sensor. now what?

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  • Answer #1

    Greg's Orange Auto (13428 Answers) , Orange, CA - (714) 361-9386
    globalhelper June 11, 2012, 13:01
     Master

    POSSIBLE COOLING SYSTEM BLOCKAGE IN RADIATOR CAUSING SENSOR NOT TO READ CORRECTLY TEMP OF ENG OR POSS COMPUTER ISSUE. SEEK A DIAG B4 YOU BLOW A HEADGASKET

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    c_catron, June 11, 2012, 13:46
     Rookie

    i wondered about the computer. i had the radiator and stuff flushed out about 3 months ago.

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    PARTS GUY, June 11, 2012, 19:29
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     Master

    Globalhelper is correct. DO NOT DRIVE THIS VEHICLE ANYMORE! Otherwise you will be putting an engine in it.

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    globalhelper, June 11, 2012, 21:01
     Master

    flushing will not unplugg cooling tubes

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    c_catron, June 12, 2012, 05:21
     Rookie

    how can i check to see if the cooling tubes are clogged?

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    globalhelper, June 12, 2012, 05:32
     Master

    pull radiator out and have it ck'd by a rad shop tech. he will pull the side tanks and insp 4 you or you can block lower outlet with your hand and fill rad to upper level, remove your hand and the water should rush out in a large stream approx 1 ft long and empty rad in like 3 sec's

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    c_catron, June 12, 2012, 05:40
     Rookie

    ok i will try that. someone also told me that they can wiggle the pulley on my water pump a little bit. then they said that usually that means it may not be producing as much water flow as it should. is this true?

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