Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

Cooling Fan Malfunction?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 08-05-2008 | 12:45 PM
  #26  
04RX8man's Avatar
Rotary Powered Countryboy
 
Joined: Feb 2007
Posts: 4,811
Likes: 1
From: Pittsburgh
yeah I also have been thinkin about the mod...not sure yet though
Old 08-05-2008 | 12:53 PM
  #27  
RX8-Frontier's Avatar
Registered User
 
Joined: Sep 2007
Posts: 166
Likes: 0
From: Louisville, KY
Originally Posted by Jax_RX8
I know many cars do this, but the 8 does not - the fans are strictly controlled by coolant temps and are not automatically turned on with the AC Compressor.
The hell you say... I learned this yesterday while sitting at a drivethrough for a good 15 minutes. Air temp over 95 degrees F, but fans not on. Had my window rolled down, 'cause I didn't want to sit at idle for so long w/ the A/C running. But finally got tired/hot/pissy, and turned on the A/C. As soon as I did, I heard the fan kick on. Thought that was an odd sound, so I turned the A/C off immediately. Whaddya' know, the fan turned off immediately. Cycled it several more times, then grinned, 'cause w/ the fan on, I still got ice-cold A/C, sitting at idle.

Only reason I noticed this so well is, my 2002 Nissan Frontier A/C does virtually nothing when I'm sitting at idle, 'cause the fan doesn't kick on at all. It sucks!
Old 08-05-2008 | 01:35 PM
  #28  
nycgps's Avatar
Out of NYC
iTrader: (1)
 
Joined: Jun 2005
Posts: 19,881
Likes: 32
From: Planet Earth
Originally Posted by Jax_RX8
I know many cars do this, but the 8 does not - the fans are strictly controlled by coolant temps and are not automatically turned on with the AC Compressor.

I cannot recommend highly enough the Mazsport Cooling Fan Mod - I have had it for 1.5 years and it works great. While it will not actually increase your maximum cooling capacity, it will get the most out of it and will keep you average engine temperature much lower during normal operating conditions.
both my fan always kicks on when I turn the AC on.
Old 08-05-2008 | 01:49 PM
  #29  
savedsol's Avatar
Carbonormous
 
Joined: Aug 2003
Posts: 882
Likes: 0
From: Chicago, IL
Originally Posted by 04RX8man
yeah I also have been thinkin about the mod...not sure yet though
After buying it, in my humble opinion there's nothing left to think about. It really is one of the best and cheapest things you can do to protect your car.
Old 08-05-2008 | 01:55 PM
  #30  
mysql's Avatar
Doppelgänger
 
Joined: Feb 2008
Posts: 3,192
Likes: 1
From: Florida
Originally Posted by savedsol
After buying it, in my humble opinion there's nothing left to think about. It really is one of the best and cheapest things you can do to protect your car.
Getting the accessport means you can increase omp flow rates, which I consider far more important for engine longevity. You also get to adjust the radiator fans to kick on at any temp, with any speed you desire. So no need to cut into hoses and no need to be locked into one fan setting.
Old 08-05-2008 | 02:09 PM
  #31  
alz0rz's Avatar
hakuna matata!
iTrader: (41)
 
Joined: Aug 2007
Posts: 6,002
Likes: 3
From: NYC
Originally Posted by mysql
Getting the accessport means you can increase omp flow rates, which I consider far more important for engine longevity. You also get to adjust the radiator fans to kick on at any temp, with any speed you desire. So no need to cut into hoses and no need to be locked into one fan setting.
but he underlined cheapest
Old 08-05-2008 | 02:29 PM
  #32  
mysql's Avatar
Doppelgänger
 
Joined: Feb 2008
Posts: 3,192
Likes: 1
From: Florida
he also said best AND cheapest.

if you get this, then you've wasted your money if you get the AP for OMP rate increase. So you have to decide if you ever plan to get the AP for that statement to be valid.

Remember, the engine was designed to operate at temps higher than 190F. We only use the fan speed increase to treat a symptom, it doesn't resolve the problem, which is heat soak and overheating. Once the vehicle gets too hot, it can take a long to cool off. So we try to keep it away from that point to stave off problems. It doesn't increase the cooling capabilities of the vehicle, it just increases the buffer between "operating temp" and "overheating" by causing the vehicle to run cooler than designed. It will not increase engine life unless your car is getting overheated on a regular basis before the mod, and assuming the increased buffer is enough to keep the car from overheating afterwards. If you're in AZ or LV and overheat before, you're likely to overheat after as you're using the same exact fan/radiator before as after.

So like I said, OMP > Fan speed. AP gets you both. Plus power.
Old 08-05-2008 | 03:29 PM
  #33  
alz0rz's Avatar
hakuna matata!
iTrader: (41)
 
Joined: Aug 2007
Posts: 6,002
Likes: 3
From: NYC
Originally Posted by mysql
he also said best AND cheapest.

if you get this, then you've wasted your money if you get the AP for OMP rate increase. So you have to decide if you ever plan to get the AP for that statement to be valid.

Remember, the engine was designed to operate at temps higher than 190F. We only use the fan speed increase to treat a symptom, it doesn't resolve the problem, which is heat soak and overheating. Once the vehicle gets too hot, it can take a long to cool off. So we try to keep it away from that point to stave off problems. It doesn't increase the cooling capabilities of the vehicle, it just increases the buffer between "operating temp" and "overheating" by causing the vehicle to run cooler than designed. It will not increase engine life unless your car is getting overheated on a regular basis before the mod, and assuming the increased buffer is enough to keep the car from overheating afterwards. If you're in AZ or LV and overheat before, you're likely to overheat after as you're using the same exact fan/radiator before as after.

So like I said, OMP > Fan speed. AP gets you both. Plus power.
but the cooling fan mod holds its value, so when you do want to buy an AP you can sell it off and make a cool $80 bucks on the mod to put towards the AP!

surprised you didn't say 'Plus power and economy.'
Old 05-08-2011 | 04:36 AM
  #34  
chetzook's Avatar
New Member
 
Joined: Oct 2010
Posts: 2
Likes: 0
From: Home is Detroit. working in Tupelo Mississippi
MS Cooling Fan 3 Relay

Originally Posted by savedsol
Have had the Mazsport Cooling mod for two weeks now. Everytime I pull into the driveway coming home from work (only 5 miles) my fans are blowing hard! I love it!!! It makes me confident that there was something messed up with one of the fan relays. I'll probably go have them tested just to see.

Rythmic, don't delay and pick one up now!

So can anyone confirm what the Cooling Fan 3 relay is for?
If I'm not mistaken, I believe that is the relay that turns both fans on high. Cooling fan 1 and 2 just turn the 2 fans on low speed.
Old 05-08-2011 | 08:59 AM
  #35  
Mazurfer's Avatar
Surf Hard, Drive Hard
 
Joined: Feb 2007
Posts: 7,840
Likes: 12
From: Indialantic, Florida
Originally Posted by chetzook
If I'm not mistaken, I believe that is the relay that turns both fans on high. Cooling fan 1 and 2 just turn the 2 fans on low speed.
While it may have been valid info, you bumped a three year old thread for your very first post.
Old 05-08-2011 | 01:29 PM
  #36  
1.3_LittersOfFurry's Avatar
Flame On!
iTrader: (4)
 
Joined: Jan 2011
Posts: 1,897
Likes: 5
From: New Orleans, La
At least he searched lol
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
WranglerFan
New Member Forum
9
08-21-2022 02:29 PM
Shankapotamus3
Series I Trouble Shooting
28
03-14-2021 04:53 PM
Carbon8
RX-8's For Sale/Wanted
42
02-27-2020 09:39 AM
urbanvoodoo
RX-8 Discussion
2
09-30-2015 01:41 AM
superROB23
Series I Aftermarket Performance Modifications
4
09-04-2015 02:22 AM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -5. The time now is 02:50 PM.