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Date: Fri, 24 Jun 2005 06:55:16 -0400
From: "BL" <>
Subject: Re: '87 900S getting real hot in the summer heat

You should look; 1. The thermostat - is it opening completely 2. The radiator - externally, are the fins rotted/damaged thereby limiting cooling? - internally, scaling builds up over time restricting coolant flow through the radiator You can try putting your heater on to hot, if the temp on the gauge goes down, you probably have a radiator problem. BL "Mike Deskevich" <> wrote in message >I have an '87 900S (originally came with A/C, but that hasn't worked > for years) that is getting very hot when stuck in traffic. By very > hot, I mean the temperature gauge is about 7/8 of it's way to Red. I > had a similar problem last summer and I noticed that the radiator fan > wasn't coming on, even when I parked the car. I had the fan switch > replaced and things were good again for the rest of the summer. Now > I'm seeing the same symptoms, however, the fan does come on when I park > the car, and it sometimes comes on in traffic, but not until the temp > needle is almost on the red. > > Is it possible that too much switching in the heat is affecting the > switch? The reason I ask, is that last summer when I took the car in > to have the fan switch replaced, the owner of the (Saab only) shop said > that she sees a lot of this in the summer and that the heat is hard on > the switch. That doesn't quite seem right to me, but Saabs are wierd > cars, so I figured I'd see what everyone else thinks. > > Question #2, where is the fan switch located? I may just want to > bypass it and have a switch on the dash where I can control the fan. I > always rather be in control, rather than have it be automatic. > > Question #3, even when running down the highway at 60-70 MPH the engine > is running hotter than it did last summer. I suspect that this is an > issue with a clogged radiator, but I'm not totally sure. Is there an > easy way to check and see if the radiator is clogged before I take it > to the $80/hr garage. I don't have much room to work on the car, so I > can't take the radiator out and stuff like that. > > Thanks! > Mike >

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