Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 02-13-2010, 11:05 PM   #1
chinesedawn
Intake
 
Join Date: Feb 2010
Location: laramie wy
Posts: 35
chinesedawn is on a distinguished road
Exclamation engine coolant become hot quick but no heater!

I change the radiator today,after I put the new one( actually not new one, it is a used one) in I did a test drive on the high way, but the coolant temperature goes high after 9 min about 60 miles/hour so I shut the car down and restart again, the Temperture drop to half and when I start drving it, Temperture goes high again and I DON'T have heater, I used to,I have heater before I change the radiator.

I touch the radiator, it's hot so it means the thermosta is good maybe... but the problem is the coolant in the raservior is cold....
chinesedawn is offline   Reply With Quote
Old 02-13-2010, 11:45 PM   #2
cre

Toyota
Racing
Development
 
cre's Avatar
 
Join Date: Apr 2007
Posts: 5,036
cre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond repute
Default

The reservoir being cool doesn't mean too much... it's in the coldest place under the hood with cold air blowing past it full time.

Are you losing coolant?
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.

If you're so inclined I'm always more than happy to accept tips via PayPal.
Tip Jar --->
cre is offline   Reply With Quote
Old 02-14-2010, 12:28 AM   #3
chinesedawn
Intake
 
Join Date: Feb 2010
Location: laramie wy
Posts: 35
chinesedawn is on a distinguished road
Red face

Thanks, I didn't see any steam or leak, I will check the coolant level, I lose some coolant when I was disconnecting the lower radiator hose, maybe it is the problem.
chinesedawn is offline   Reply With Quote
Old 02-17-2010, 02:18 AM   #4
supra.7mgte
Intake
 
Join Date: Feb 2010
Location: Alberta
Posts: 36
supra.7mgte is on a distinguished road
Default

make sure u got know air in the system... by the sounds of it u have air in it somewhere
supra.7mgte is offline   Reply With Quote
Old 02-17-2010, 03:52 AM   #5
DarkSupra2.5
3" Exhaust
 
DarkSupra2.5's Avatar
 
Join Date: May 2008
Location: Sacramento
Posts: 60
DarkSupra2.5 is on a distinguished road
Default

Your best bet to get rid of the air that's most likely in your system that I use, put your car in a driveway, or elevate the front of the car with ramps or jack stands, either way. open the radiator, turn the heater all the way up, start the car and fill the radiator. This allows the water to flow through the heater core and the water pump does the work for you in passing the air through the system.

The point is that you want the radiator fill point to be the highest point in the system so the air gathers there ya know? Good luck.
__________________
1jz-gte swap (Currently spun #3 rod bearings), Apexi high flow filter, Greddy thrust 3" downpipe, N1 3" catback with cat delete tube, 1 peice driveshaft, Bar and Plate intercooler, and 440 JDM 2jz injectors.

Possible 2jz lower block swap in the works if I can't rebuild the 1j. So troublesome.
DarkSupra2.5 is offline   Reply With Quote
Old 02-22-2010, 05:07 PM   #6
Krem
3" Exhaust
 
Join Date: Sep 2009
Location: Las Vegas
Posts: 167
Krem is on a distinguished road
Default

do you hear a gurgling/running water sound from behind the dash? could also sound like a squeeky hamster wheel gone awry... that's a good indication of air in the heater hose and thus air in your cooling system. However, given the fact the radiator was installed and the issues began at the same time, I'd have to guess you may have installed a clogged radiator. When it's cold, pop the radiator cap off, run the car... check to see if you see the coolant moving, indicating the coolant is moving thru.

Also, why did you replace the radiator? were you having issues with cooling before hand? maybe the issue didn't start with the radiator but could be a faulty water pump, thermostat or something more severe... hopefully you're not blowing smoke out of your tail pipe...

Finally, guess it could just be coincidence your heater's vacuum valve isn't working any more... preventing water from even flowing through your heater hose.
Krem is offline   Reply With Quote
Old 03-01-2010, 01:25 AM   #7
chinesedawn
Intake
 
Join Date: Feb 2010
Location: laramie wy
Posts: 35
chinesedawn is on a distinguished road
Default

I fixed the problem, the main reason is heater core is kind of clogged and coolant also a little low
chinesedawn is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Heater Union (Coolant Leak) slader99 MKIII Supra 11 12-28-2009 12:29 AM
Funky engine coolant issue shirkinator Non-Generation Specific Questions 1 06-22-2009 09:37 AM
shooting coolant out of reservoir/defunct heater sd88supra MKIII Supra 26 03-16-2009 01:34 AM
Low engine coolant light on??? 88Tsupra MKIII Supra 41 06-24-2007 04:05 AM
Keeping Engine Cool mrnickleye Supra FAQ 0 06-04-2005 11:02 PM


All times are GMT. The time now is 03:22 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86