 radiator fan problem |
 Mar 22, 2006 - 4:34 PM
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Enthusiast Joined Jul 8, '03 From tucson az Currently Offline Reputation: 0 (0%)  |
Very unusual problem with a 1998 gt . My car was runninig hot and i pulled over and sure enough my radiator fans were not coming on. I replaced the relay to fan # 1 and same problem still accured. Next I checked the engine coolant temperature sensor located on the lower portion of radiator and when the ignition is on and the sensor is unplugged the fans come on. I then replaced the coolant temperature sensor
and the same thing happened. If sensor is plugged in the fans will not come on but if it is left unplugged the fans run constantly as long as the ignition is on. Does anyone know where the problem might be. Also does anyone know if it is fan #1 fan #2 or fan #3 relay that controls the radiator fans. Tahnks for the time and help it is greatly appreciated |
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Mar 23, 2006 - 1:31 AM
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Enthusiast  Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
how does a reading of 14V across the fans leads mean its dead? it means that its dropping all 14V that the alternator is supplying it, which is what it should be doing since its the only load on that circuit. if it showed like 9 volts across the leads when it was running then theres an issue in the circuit.
or do you mean that the engine was hot, fan wasnt moving, AND it was dropping all 14V? -------------------- |
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Mar 24, 2006 - 3:29 AM
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 Enthusiast Joined Jan 13, '06 Currently Offline Reputation: 0 (0%) |
QUOTE(Bitter @ Mar 23, 2006 - 12:31 AM) [snapback]411759[/snapback] how does a reading of 14V across the fans leads mean its dead? it means that its dropping all 14V that the alternator is supplying it, which is what it should be doing since its the only load on that circuit. if it showed like 9 volts across the leads when it was running then theres an issue in the circuit. or do you mean that the engine was hot, fan wasnt moving, AND it was dropping all 14V? ya i know i was reading 14v going to the fan but ..it wasn't moving |
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Mar 24, 2006 - 11:19 AM
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Enthusiast Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
QUOTE(southwest2118 @ Mar 24, 2006 - 3:29 AM) [snapback]412361[/snapback] QUOTE(Bitter @ Mar 23, 2006 - 12:31 AM) [snapback]411759[/snapback] how does a reading of 14V across the fans leads mean its dead? it means that its dropping all 14V that the alternator is supplying it, which is what it should be doing since its the only load on that circuit. if it showed like 9 volts across the leads when it was running then theres an issue in the circuit. or do you mean that the engine was hot, fan wasnt moving, AND it was dropping all 14V? ya i know i was reading 14v going to the fan but ..it wasn't moving  ya that fan is probably on its way out. if you spin it by hand backwards does it make a clicking noise? also it should spin pretty freely in either direction. you could pull the fan blade and put a few drops of heavey weight oil at either end of the shaft as a temporary fix if you cant afford a new one now.
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Posts in this topic
johnnybravo04 radiator fan problem Mar 22, 2006 - 4:34 PM
Bitter can you try swapping relays? Mar 22, 2006 - 4:53 PM southwest2118 I had the same problem. but one day when the temp ... Mar 23, 2006 - 12:44 AM
Jeremiah QUOTE(southwest2118 @ Mar 23, 2006 - 12... Mar 23, 2006 - 1:55 AM miro1975 Manual swich and you ready to go. haha..... I di... Mar 23, 2006 - 11:20 PM Bitter you might try testing the relays, its pretty easy.... Mar 24, 2006 - 12:24 AM scothaniel QUOTENext I checked the engine coolant temperature... Mar 24, 2006 - 3:13 PM scothaniel QUOTEi was reading 14v going to the fan but ..it w... Mar 24, 2006 - 3:17 PM Bitter QUOTE(scothaniel @ Mar 24, 2006 - 3... Mar 24, 2006 - 3:44 PM spke719 could be a sensor???? Mar 24, 2006 - 3:33 PM scothaniel Well, if he was messuring 14V across the fan then ... Mar 24, 2006 - 5:02 PM southwest2118 i used a multimeter. put it on both of the wires g... Mar 27, 2006 - 1:57 AM |
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