Overheating what havent I changed? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 08-10-2013, 10:37 AM   #1
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2012
Location: New Braunfels,TX
Posts: 1,141
Total Cats: 51
Default Overheating what havent I changed?

So I have been overheating it has been about 100 every day. I have put in a new water pump, thermostat, mishimoto radiator and fans and cap. Also I am running 90/10 water/anitfreeze ratio. What am I forgetting?

Last edited by ScottyP3821; 08-13-2013 at 03:02 PM.
ScottyP3821 is offline   Reply With Quote
Old 08-10-2013, 10:56 AM   #2
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

Put the undertray back on.

Dann
nitrodann is offline   Reply With Quote
Old 08-10-2013, 12:42 PM   #3
Elite Member
iTrader: (17)
 
Join Date: Aug 2007
Location: Fort Myers, FL
Posts: 2,791
Total Cats: 130
Default

Are you losing coolant? Is it overheating when stopped or driving? Is your fan coming on?
pdexta is offline   Reply With Quote
Old 08-10-2013, 01:00 PM   #4
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2012
Location: New Braunfels,TX
Posts: 1,141
Total Cats: 51
Default

All fans are good and im not loosing any coolant. Runs at about 195-200F at a sitting still with ac on. Under boost or at speeds at 60-70 the car gets to 230F and will keep increasing if I were to let it. I ordered an undertray and and new temp sensor. If that dont fix it I am completely at a loss of what to do. I understand a coolant re route helps but I am not even driving the car hard and it overheats.
ScottyP3821 is offline   Reply With Quote
Old 08-10-2013, 01:52 PM   #5
Elite Member
iTrader: (5)
 
Join Date: Aug 2011
Location: South Jersey
Posts: 1,523
Total Cats: 30
Default

have you bled all of the air out of the system?
BTMiata is offline   Reply With Quote
Old 08-10-2013, 06:48 PM   #6
Elite Member
iTrader: (2)
 
fooger03's Avatar
 
Join Date: Jan 2009
Location: Columbus, OH
Posts: 4,132
Total Cats: 187
Default

If you just "ordered an undertray", am I correct to assume that you don't yet understand the concept of "ducting"?
fooger03 is offline   Reply With Quote
Old 08-10-2013, 07:06 PM   #7
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,639
Total Cats: 25
Default

OP, you realise that with no further info except that you dont know why it overheats and that it does infact overheat, I was able to deduct that you were infact missing the undertray, immediately, with no hesitation and full confidence.

If someone can do that, whats the chances that they are right?

Dann
nitrodann is offline   Reply With Quote
Old 08-10-2013, 07:11 PM   #8
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,363
Total Cats: 1,323
Default

Quote:
Originally Posted by nitrodann View Post
Put the undertray back on.

Dann
[/thread]
Savington is offline   Reply With Quote
Old 08-10-2013, 08:27 PM   #9
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2012
Location: New Braunfels,TX
Posts: 1,141
Total Cats: 51
Default

Quote:
Originally Posted by BTMiata View Post
have you bled all of the air out of the system?
Yes I bled all the air
ScottyP3821 is offline   Reply With Quote
Old 08-10-2013, 08:30 PM   #10
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2012
Location: New Braunfels,TX
Posts: 1,141
Total Cats: 51
Default

Quote:
Originally Posted by fooger03 View Post
If you just "ordered an undertray", am I correct to assume that you don't yet understand the concept of "ducting"?
I understand I just didn't realize how crucial it was on a street used miata. Sometimes it over heats just going 40mph or les. Didnt think ducting would be so crucial as to lower 230f temps at such low speeds.
ScottyP3821 is offline   Reply With Quote
Old 08-10-2013, 08:42 PM   #11
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

You may have other issues. But it's a given that you need to use the under panel.
FRT_Fun is offline   Reply With Quote
Old 08-10-2013, 09:45 PM   #12
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2012
Location: New Braunfels,TX
Posts: 1,141
Total Cats: 51
Default

I don't understand what other issues I could have I figure underpanel and I ordered a new temp sensor. Replaced everything else.
ScottyP3821 is offline   Reply With Quote
Old 08-10-2013, 09:48 PM   #13
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

Air in system?

nm see you said you bled the system.

I'm willing to bet the panel fixes it. You would be surprised how much of an impact it has.
FRT_Fun is offline   Reply With Quote
Old 08-10-2013, 10:09 PM   #14
AFM Crusader
iTrader: (18)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,438
Total Cats: 84
Default

Make sure your fans are rotating in the correct direction and get more water into the mix.
olderguy is offline   Reply With Quote
Old 08-10-2013, 10:22 PM   #15
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,775
Total Cats: 1,106
Default

How did you burp the coolant? I would suggest going on amazon and getting one of the magic funnels to use for burping.
shuiend is offline   Reply With Quote
Old 08-10-2013, 11:48 PM   #16
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2012
Location: New Braunfels,TX
Posts: 1,141
Total Cats: 51
Default

Quote:
Originally Posted by shuiend View Post
How did you burp the coolant? I would suggest going on amazon and getting one of the magic funnels to use for burping.
I followed the same procedure similar to that of the mishimoto YouTube instruction video for installing the radiator.
ScottyP3821 is offline   Reply With Quote
Old 08-10-2013, 11:51 PM   #17
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2012
Location: New Braunfels,TX
Posts: 1,141
Total Cats: 51
Default

Quote:
Originally Posted by olderguy View Post
Make sure your fans are rotating in the correct direction and get more water into the mix.
Fans are good. Is it safe to run less than 10% antifreeze. Oh also I forgot to mention that I tried wetter water and it didn't really do much. I did wetter water and water mix.
ScottyP3821 is offline   Reply With Quote
Old 08-10-2013, 11:54 PM   #18
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2012
Location: New Braunfels,TX
Posts: 1,141
Total Cats: 51
Default

Quote:
Originally Posted by FRT_Fun View Post
Air in system?

nm see you said you bled the system.

I'm willing to bet the panel fixes it. You would be surprised how much of an impact it has.
I started thinking would the panel also help at idle as well? Maybe act similar to sucking through a straw? Increase air velocity by allowing the fans to pull air better?
ScottyP3821 is offline   Reply With Quote
Old 08-11-2013, 12:38 AM   #19
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

How are your fans mounted to the radiator?
FRT_Fun is offline   Reply With Quote
Old 08-11-2013, 01:44 AM   #20
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,363
Total Cats: 1,323
Default

I would suggest putting the undertray back on, since it's the only suggestion in this thread that's going to actually fix your problem.
Savington is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
MP62 maintenance Pist0n Supercharger Discussion 3 10-10-2015 05:23 PM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM
01-05 Fab9 PNP COPs (used) FrankB Miata parts for sale/trade 6 09-30-2015 12:48 PM
Another Alternator thread ihiryu General Miata Chat 9 09-28-2015 11:22 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 -4. The time now is 04:39 AM.