ALARMMANMARK Posted September 2, 2009 Share Posted September 2, 2009 Hi all. my daughter has recently purchased a JDM sot top 350Z 2003. Last week it started to overheat and we have now pinpointed the cooling fans as the problem (they are not cutting in). When you put the air con on the actuator clicks in but the fan does not move unless you give it a gentle push, then it only moves at a slow speed. Its so slow that you can stop it without even hurting your fingers. This is the same on both fans. Am i correct in thinking the fans have gone faulty and need replacing or is there another possible cause. If so is there any cheap way to remedy this or is it Nissan parts only. Thanks Mark Quote Link to comment Share on other sites More sharing options...
Darren-B Posted September 2, 2009 Share Posted September 2, 2009 might be worth checking the relays powering the fans, possible earthing problem too. Also is the temp gauge in the car going up at all? if not you may have an air lock in the cooling system or a faulty thermostat Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted September 2, 2009 Share Posted September 2, 2009 Sounds like an earthing issue. At the bottom of the fan housing there are two multi plugs, separate them and clean up the terminals. Quote Link to comment Share on other sites More sharing options...
sunset350z Posted September 2, 2009 Share Posted September 2, 2009 should be an easy fix Quote Link to comment Share on other sites More sharing options...
ALARMMANMARK Posted September 2, 2009 Author Share Posted September 2, 2009 Thanks for that, but the fans appear to have a good earth with 14 volts to them. Couldnt find the relays but i have read that there is is three of them. Again if there is the voltage to the fans would that not suggest the relays are working. The temp gauge is showing it is getting hot but at no time does the fan(s) go into fast mode just a token effort. Thanks Mark Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted September 2, 2009 Share Posted September 2, 2009 Thanks for that, but the fans appear to have a good earth with 14 volts to them. Couldnt find the relays but i have read that there is is three of them. Again if there is the voltage to the fans would that not suggest the relays are working. The temp gauge is showing it is getting hot but at no time does the fan(s) go into fast mode just a token effort. Thanks Mark If the voltage and earth is good then I would assume that it may be the fans. Like I said clean and check the block connectors. Quote Link to comment Share on other sites More sharing options...
ALARMMANMARK Posted September 2, 2009 Author Share Posted September 2, 2009 Thanks Alex, i did dissconnect the blocks (complete with bloody knuckles) and re connected them. Is there any magic spray that would clean them or is it a wire wool job and more bloody knuckles. Thanks Mark Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted September 2, 2009 Share Posted September 2, 2009 Thanks Alex, i did dissconnect the blocks (complete with bloody knuckles) and re connected them. Is there any magic spray that would clean them or is it a wire wool job and more bloody knuckles. Thanks Mark Mark, Just some wd40 or similar mate and work them in and out. Try taking a 12 volt feed direct to the fans off a spare battery. Quote Link to comment Share on other sites More sharing options...
ALARMMANMARK Posted September 2, 2009 Author Share Posted September 2, 2009 I will give it a go tomorrow but i must say i am not convinced it is the fans as it seems strange that both should be working fine then suddenly both have shot it . You would have thought one would go first. Thanks Mark Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted September 2, 2009 Share Posted September 2, 2009 Mark, This should help you. Alex. Quote Link to comment Share on other sites More sharing options...
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