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hot wire rad and condeser fans

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injector

15+ Year Contributor
80
0
Sep 10, 2005
palm bay, Florida
before anyone tells me to do a search or goto vfaq, i did i went to vfaq and i printed the article to toggle switch both fans and i did a search on here too BUT all i could find is how to do it on the turbo version i have an NT, so my question is i have hi and low relays for both rad and condenser fan, which relays do i bridge?? the high or the low? i don't want to wire a toggle switch i'm only going to bridge the signal side of each realy so when one fan turns on the other one does too and vice versa.
 
Bridge pin 1 of rad fan relay hi (green/orange wire) to pin 1 of rad fan relay lo (green/black) to pin 1 of condensor fan relay hi (green/orange wire). Just bridge them - still also leave the wires go to where they normally go.
 
thanx for the info luv2ralley, as it turns out i didn't have to do anything to the high rad relay, because the high rad relay turns on both fans automatically, so i wired the low rad relay signal to the low cond signal, that way if the ECU needs more cooling than 2 fans it can activate the high rad relay and it'll kick up the speed on both fans, same thing happens when you turn on the A/C the high rad and cond fan activate
 
injector said:
the high rad relay turns on both fans automatically
Not according to the DSM Backup Manual CD. It shows what you say is true for the turbo version but the N/T (which you have) has the high rad relay, lo rad relay, and hi cond relay all independantly controlled by the PCM (ECU). (The lo cond relay is controlled by the A/C compressor.) This all assumes you still have the original fans which have 2 windings each for hi and lo speeds. Could you be looking on the wrong page or manual? The DSM Backup Manual CD is from a 1997 Eclipse which is supposed to be the same for a 1995 in this area. I suppose there's always a possiblity they may be different. One could look at a 1995 Mitchels auto manual at a library if you suspect so (much more accurate than Chilton or Haynes).
 
i have ALLDATA (it's an automotive shop repair software) that's where i found 3rd qauarter 2004 so it has all the cars made from 2004 and back, and my rad fan is not original it went bad about 6k miles ago, i replaced it with a slim-fan that could be it i don't know, all i know is that it fixed my FL overheating problem, actually more like high temp cause i wasn't really dagerously overheating, just enough to piss me off and waste my gas because i had to turn on the a/c so it would go back down to normal
 
Ok - I just noticed the DSM Backup Manual for the NT shows 4 wires going to the rad fan motor but the motor is only hooked up to 2 of them (so it's a single speed motor). I went to the library and looked at the Mitchell manual for a 1995NT and it only shows 2 wires going to the rad fan motor (uses rad fan relay lo). It also shows rad fan relay hi doesn't operate anything (unused) but it does activate together (wired) with cond fan relay hi which is controlled by the ECU. If you need this diagram pm me with an email address.
 
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