Date: Wed, 4 Aug 1999 10:00:56 -0700 From: "John Weiss" <jrweissnopsamet*NOSPAM*.com> Subject: Re: radiator fan question...
It sounds like it's working correctly. IIRC, only the older, non-air-conditioned 900s used a single fan. When AC is added, both fans come on when the coolant temp gets high (2/3 to 3/4 on the gauge, if you have the standard thermoswitch; a VW part is available to turn them on earlier). When the AC is turned on, first one comes on, then the second. Both run most of the time. I wired a switch and second relay to jumper the fan relay that controls one fan. I can turn on a single fan at will, and the second fan runs normally via the thermoswitches. -- John R. Weiss Seattle, WA Remove *NOSPAM* from address for e-mail reply leone <leonenopsam.com> wrote in message news:37A7B9FB.C2077B4Bnopsam.com... > i've got an '89 turbo and i just replaced a radiator fan that was blowing the fuse when it ran. the new fan is working but i think it might not be going on at the right time. > i just bought the car and i'm not sure exactly when those fans are supposed to operate. > > - if i push the a/c button in they both go on. > > - if the car gets really hot (up above 3/4 on the guage) they also both go on. > > - if the car's "warm" and i jump the sensor that screws into the radiator > they both go on. > > i thought there was a condition where only one fan would go on and off ?? > > are there other sensors? i'm guessing there's one that's inline in the radiator hose and i heard there's a "computer" somewhere that's also involved in all this. > > i'm wondering the best way to trouble shoot the system. i'm trying to avoid going to the dealer. for all i know it's working correctly. i thought that a single fan was supposed to go on at around 3/4 of the way up. it seems like it's waiting until it's higher than that. sitting in traffic in 85+ degree heat i get nervous and push in the a/c button to make sure both fans are on (i know you're wondering why i don't have the a/c on anyways but i like the windows open and i don't like the way the car feels with it on (i get weird vibration in the brake pedal, but that's probably another can of worms...). > > any info would be appreciated > > thanks a lot. > > jim leone > >
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