General Miata Chat A place to talk about anything Miata

Radiator Fan Wiring?!?!?

Thread Tools
 
Search this Thread
 
Old 01-21-2008, 02:32 PM
  #1  
Junior Member
Thread Starter
iTrader: (6)
 
danscreations's Avatar
 
Join Date: Apr 2006
Posts: 257
Total Cats: 0
Default Overheating - Radiator Fan Wiring?!?!?

Curious what everone is running for wiring on aftermarket fans? Spliced into OEM, Linked Together (2x), Hardwired, etc?

I have one single 12" (or so) slimline fan and I have issues here and there with it (spliced into the oem wiring). I currently have either a bad relay or the wiring to the coolant temp sensor finally gave from rubbing through because it currently won't come on at all. No power to the connector but the fan works fine (with the ignition turned on; without car being started). Don't think it runs right now either with the car running. Either way I'm hooking the A/C back up and need the other fan so I'm putting another on. Not sure which method i should use.

Last edited by danscreations; 01-21-2008 at 08:10 PM.
danscreations is offline  
Old 01-21-2008, 02:53 PM
  #2  
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,482
Total Cats: 372
Default

For a 16" 2700 CFM spal, I use the OE Link ecu fan trigger to send ground to a 40a relay (was using the fan thermswitch in same position) with a heavy gauge lead from the under hood fuse box + post to the + on the fan. No a/c solution. You could have a bad thermoswitch- just stick that lead to the chassis ground and your fan should come on. But if you're running two fans with the same switch, definitely install a new relay setup.
m2cupcar is offline  
Old 01-21-2008, 08:16 PM
  #3  
Junior Member
Thread Starter
iTrader: (6)
 
danscreations's Avatar
 
Join Date: Apr 2006
Posts: 257
Total Cats: 0
Default

Originally Posted by m2cupcar
For a 16" 2700 CFM spal, I use the OE Link ecu fan trigger to send ground to a 40a relay (was using the fan thermswitch in same position) with a heavy gauge lead from the under hood fuse box + post to the + on the fan. No a/c solution. You could have a bad thermoswitch- just stick that lead to the chassis ground and your fan should come on. But if you're running two fans with the same switch, definitely install a new relay setup.
Checked the fan once again and it's good or atleast turns on a spins pretty fast. I grounded out the fan/themo sensor and wala the fan started working. I went bought a new one put it in and seemed fine for 2-3min and started creeping again. So I just jumpered the ground for the time being so the fan would run constantly with the ignition on. That seemed great for 10min or so of city driving and it started creeping up again; but not as high.

Seems to creep up to 60-70% to H when sitting and 50-55% when driving when the fans running all the time. Maybe a bad thermostat?!?! New waterpump (3mo ago), radiatior (year ago), no leaking colant/fluid, oils clean too. Stumped and fustrated.

Really weird thing is it's cooler outside these last few days I've had issues by 30-40 degree's than usal.
danscreations is offline  
Old 01-22-2008, 08:50 AM
  #4  
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,482
Total Cats: 372
Default

Agree- I'd check the tstat. Easy enough to do in a pot of boiling water. I had a new one that would stop only half way open. That was fun, especially after saying, "The tstat is brand new, so it couldn't be that."

Last edited by m2cupcar; 01-22-2008 at 09:29 AM.
m2cupcar is offline  
Old 01-22-2008, 08:53 AM
  #5  
Senior Member
iTrader: (2)
 
XxGoKoUxX's Avatar
 
Join Date: Nov 2007
Location: orlando, FL
Posts: 558
Total Cats: 0
Default

that must have pissed you off m2cupcar...
XxGoKoUxX is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
tazswing
Race Prep
20
10-03-2015 11:04 AM
btabor
ECUs and Tuning
10
09-28-2015 05:33 PM



Quick Reply: Radiator Fan Wiring?!?!?



All times are GMT -4. The time now is 08:21 AM.