MajestikTwelve Posted January 17, 2004 Share Posted January 17, 2004 BTW I searced the forums and couldnt find specifically what im Looking for.. About a month ago I blew my radiator, I replaced it and my car still overheats at low and fast speeds. A mechanic said the hydraulic fan had failed because it was not moving. I figured the fan cant be the problem because it heats up on the highway but just to make sure, I tested the fan by putting the car in diagnostic mode and it worked at full speed. So then i thought it was the sensor tht tells the fan to run faster because when I checked it the resistance like the manual says, stayed constant no matter how hot the engine got. When I took the sensor out and put it in hot water it worked fine so it meant that the sensor was not getting any heat. My question is this - if the lower radiator hose is not hot is the problem is the thermostat or the water pump? I think it is the thermostat because if it is the pump there should be some heat circulating and I would be getitng a reading on the sensor. This should help some of you.. To put the fan (hydraulic only) in diagnostic mode use a paper clip or jumper wire to connect EP1 and OP1. The fan should run at full speed. Also the manual is wrong with Sensor resistance - it says at cold the resistance should be 1.58K but it is somewhere around 3.2K Quote Link to comment Share on other sites More sharing options...
SKperformance Posted January 17, 2004 Share Posted January 17, 2004 not sure how you didn;t find the other 50 posts atleast for the common problem with the 92-93 only overheating problem sounds like yours is the thermostat if you checked everything else Quote Link to comment Share on other sites More sharing options...
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