nvexplorer Posted April 26, 2006 Share Posted April 26, 2006 My 93 Loyale almost always overheats when I drive home from town. There's a nice long stretch of highway that's all uphill and the temp is usually past 3/4 to the red zone by the time I get off the highway. I've tried pulling 75mph to 55mph and the result is about the same. Recently I wired a switch to the thermo switch on the radiator that controls the electric fan and turn the fan on before I go up the hill and the temp guage hasn't gone up much past the halfway mark. Is my sensor going dead or is the temp range for that fan just too narrow and activates the fan when its already pretty hot? What's the name for that sensor anyway and does anybody have a parts#? Any other thoughts about the overheating? Thanks Jack Quote Link to comment Share on other sites More sharing options...
nipper Posted April 26, 2006 Share Posted April 26, 2006 My 93 Loyale almost always overheats when I drive home from town. There's a nice long stretch of highway that's all uphill and the temp is usually past 3/4 to the red zone by the time I get off the highway. I've tried pulling 75mph to 55mph and the result is about the same. Recently I wired a switch to the thermo switch on the radiator that controls the electric fan and turn the fan on before I go up the hill and the temp guage hasn't gone up much past the halfway mark. Is my sensor going dead or is the temp range for that fan just too narrow and activates the fan when its already pretty hot? What's the name for that sensor anyway and does anybody have a parts#? Any other thoughts about the overheating? Thanks Jack Replace the sensor. Since you wired in at the sensor, you know the fans and relays work. Your sensor is dead. nipper Quote Link to comment Share on other sites More sharing options...
nvexplorer Posted April 26, 2006 Author Share Posted April 26, 2006 The fan does come on sometimes on its own. I also wired it so even if the switch is off if the sensor completes the circuit the fan will come on. Do you know the official name for that sensor or a part #? Quote Link to comment Share on other sites More sharing options...
mdjdc Posted April 26, 2006 Share Posted April 26, 2006 That is the fan thermosensor. It is located in the side tank of the rediator on the passenger side. Quote Link to comment Share on other sites More sharing options...
89Ru Posted April 26, 2006 Share Posted April 26, 2006 I believe the official name is 'thermoswitch' although it can be called 'auxiliary fan switch'. It is basically a bi-metallic snap action switch. Just ordered one myself from www.thepartsbin.com, p/n G5030-83931 for $23. No guarantee this is the right part, just cheaper. Lowest I found until today was $70-80. Be wary, their computer doesn't know the difference between a hatch and a coupe. If I get this part to work maybe I'll post this in a new thread. I've been running without this switch working for over two years and temp stays well below 1/2 even for short idles. I'd also look elsewhere (maybe replace the radiator) if you need the aux fan on to stay cool at speed. Keep yer Subie cool and it will run until it rusts out Quote Link to comment Share on other sites More sharing options...
somick Posted April 26, 2006 Share Posted April 26, 2006 When did you change your thermostat? By the way from my experience the faster you go the more airflow you get on your radiator. So it should cool better. Sam Quote Link to comment Share on other sites More sharing options...
SakoTGrimes Posted April 26, 2006 Share Posted April 26, 2006 I was having the same problem with my Loyale when I first got it. I installed a better 2 core radiator and it never went past halfway after that. Quote Link to comment Share on other sites More sharing options...
nipper Posted April 26, 2006 Share Posted April 26, 2006 I was having the same problem with my Loyale when I first got it. I installed a better 2 core radiator and it never went past halfway after that. that was going to be my first suggestion. Radiaotrs clog with age, especially if no one has been changing the coolant every two years. it can still be a clogged radiator and the fans cycling cnat keep up with the heat load. nipper Quote Link to comment Share on other sites More sharing options...
azsubaru Posted April 26, 2006 Share Posted April 26, 2006 I took the electric fan completely out of my Loyale over a year ago, no overheating issues at all - and this is Phoenix! Most likely the radiator, but you should check the thermostat before spending the bucks. Quote Link to comment Share on other sites More sharing options...
nvexplorer Posted April 26, 2006 Author Share Posted April 26, 2006 Thanks for all the posts. I changed the Tstat maybe a month ago and the coolant a few days after that. I wouldn't put it past the radiator being clogged. I have a ea81 radiator thats in good shape. Would I be able to put it in without much trouble or does the ea82 have dimensions that are different enough to make it a hassle? Quote Link to comment Share on other sites More sharing options...
nvexplorer Posted May 12, 2006 Author Share Posted May 12, 2006 I ordered a radiator on ebay and that solved my problems. No more overheating. The fan sensor even works when its supposed to now. I can even run it with the AC on max and it doesn't even get close to halfway up the gauge. Yay for unplugged radiators! Quote Link to comment Share on other sites More sharing options...
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