mcramsay Posted February 21, 2013 Share Posted February 21, 2013 I have a 2003 350z and over the last few months I've been having an intermittent issue with the heater blower. When the car is cold the blower will not run, occasionally when hot it will, I took the fan out from under the dash, and let an electronics wizard at work have a look, it turns out it is a brushless motor and requires a pulse to make the fan spin, we emulated a slow pulse and managed to make the fan move! We are guessing that something on the control circuit is goosed and not pulsing to operate the fan, I rung my local Nissan garage And was quoted £500 for a new fan, but not being 100% that's there could be an other fault causing this issue I'm reluctant to part with that kind of cash! I was wondering if any one had any experience of this issue? If so how it was fixed? There are second hand fans on eBay but not the correct one for my 350. The bloke at Nissan said I need one for a 2004-2007 model with a 3 pin plug on it! Any help would be much appreciated! Quote Link to comment Share on other sites More sharing options...
ilogikal1 Posted February 21, 2013 Share Posted February 21, 2013 No experience of this issue myself so I can't help you there. However, for parts, Quote Link to comment Share on other sites More sharing options...
marzman Posted February 21, 2013 Share Posted February 21, 2013 Take off the trim around the gear lever and there is a white ribbon cable behind the heater controls - inspect this for any damage and make sure it is plugged into the controls correctly and also plugged into the white box firmly. The white box is the AC control unit. Try unplugging it from the controls and start the car... does it blow then? Mine blows on full when it's disconnected from the switch. Quote Link to comment Share on other sites More sharing options...
marzman Posted February 21, 2013 Share Posted February 21, 2013 (edited) Oh and welcome by the way. I'll find you a link to show you how to remove the gear surround... EDIT: http://liljerk.morpheus.net/350Z/dash_removal/ Edited February 21, 2013 by marzman Quote Link to comment Share on other sites More sharing options...
marzman Posted February 21, 2013 Share Posted February 21, 2013 Also, look at the resolution to the problem on this thread. http://www.350z-uk.com/topic/56179-air-con-and-heater-fan-intermittent/ Quote Link to comment Share on other sites More sharing options...
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