A/C and Overheating. - RX8Club.com



New Member Forum A place for new members to get their feet wet

Reply
 
 
 
Thread Tools Search this Thread Rate Thread
Old 06-18-2017, 08:23 PM   #1
New Member
Thread Starter
 
Join Date: May 2017
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
A/C and Overheating.

Hi, I'm new to this forum and to owning my RX-8.
I have a 2007 Mazda RX-8 Manual. 126k miles.
I just moved to Arizona and Its really hot here.
When im driving and I have my A/C on the Temp Gauge need starts to go up so I turn off my A/C. Just got a fresh flush to the radiator. Any ideas? Ive searched the forum and there no exact answer to my problem. And if there's anyone in AZ that can help or knows a mechanic that is fair let me know. Thanks
Venem is offline   Reply With Quote
Old 06-18-2017, 09:46 PM   #2
Registered
 
Join Date: Feb 2017
Location: Austin, TX
Posts: 401
Thanked 47 Times in 38 Posts
Check your undertray, and check the foam around your radiator.
Reoze is offline   Reply With Quote
The Following User Says Thank You to Reoze For This Useful Post:
04Green (06-21-2017)
Old 06-19-2017, 12:11 PM   #3
Registered
iTrader: (1)
 
Join Date: Nov 2012
Posts: 613
Thanks: 0
Thanked 3 Times in 3 Posts
^above will help when the car is moving. If it's happening when the car is still, the problem may be the fans - check they are working - both low and high speeds. Also make sure they are properly seated against the radiator, and if it is a modified/aftermarket radiator that there are no big gaps around the edges so the fans suck air through rather than around the radiator.

This car does get hot with the ac on in traffic/at low speeds though.
blu3dragon is offline   Reply With Quote
Old 06-19-2017, 12:42 PM   #4
Registered
 
Join Date: Feb 2017
Location: Austin, TX
Posts: 401
Thanked 47 Times in 38 Posts
When I was running into issues with mine due to the undertray and foam I actually had very little issues while moving. It was only an issue stopped in traffic. Once it hit 100 degrees outside, my temps started jumping into the 235F range. . There was a post I read somewhere on this board that explained how without the foam, a large portion of the hot air being sucked through the radiator is recirculating around it.

The undertray I believe was a major contributor to engine bay heat soak. With the bottom of it not completely secured air was blowing right under the engine.
Reoze is offline   Reply With Quote
Old 06-19-2017, 12:42 PM   #5
Registered
 
Join Date: Nov 2009
Location: Ohio
Posts: 752
Thanked 8 Times in 8 Posts
I can attest to the heat - I've never seen a car have its brake fluid change color so fast (moisture and heat). I have upped my reservoir fluid change interval to every 4 months (and I bleed the brakes once per year).
wannawankel is offline   Reply With Quote
Old 06-21-2017, 01:08 PM   #6
\_(ツ)_/
 
NotAPreppie's Avatar
 
Join Date: Mar 2006
Location: Chicago-ish
Posts: 1,705
Thanked 47 Times in 34 Posts
Get a Bluetooth OBD-II adapter (~$15 on Amazon) and download a phone app to monitor actual temperatures. The temp gauge in the dash is useless.

The fans should come on full speed ~207*F coolant temps. If yours don't come on by that point, then there's a problem with the fans or electronics controlling them.

If they are working and your cooling system just can't keep up then you should get an upgraded radiator. The
CSF 3164 CSF 3164
and
Koyo V2695 Koyo V2695
are both good choices for improved cooling that won't break the bank.
NotAPreppie is offline   Reply With Quote
Old 06-21-2017, 08:40 PM   #7
Moder8
iTrader: (1)
 
04Green's Avatar
 
Join Date: Aug 2009
Location: Oviedo, Florida
Posts: 2,430
Thanked 8 Times in 6 Posts
04Green is offline   Reply With Quote
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 05:25 AM.


All content Copyright 2017 by Internet Brands, Inc.