PLZ HELP!!! coolant temp too high!
Thread Starter
Instructor
Joined: Nov 2010
Posts: 138
Likes: 0
From: McKinney Tx
PLZ HELP!!! coolant temp too high!
Coolant temp hitting 230+ with the a/c running in 100 degree weather. I turn the a/c off but the the air going at full blast and the temp goes down to 214. What's the deal here????
Any input would be greatly appreciated!
Any input would be greatly appreciated!
Melting Slicks
Joined: Aug 2006
Posts: 2,866
Likes: 45
From: Tampa Bay, Go BUCS!!!Go Rays!!!Go Lightning!!!
St. Jude Donor '12-'13-'14
1st make sure both fans are running with the A/C on.
Then make sure your radiator is clear of debris. Lots os stuff gets trapped at the top covering and 15% of you radiator..
Then make sure your antifreeze is not too old and worn out and that the mix is the right percentage.
GL
Then make sure your radiator is clear of debris. Lots os stuff gets trapped at the top covering and 15% of you radiator..
Then make sure your antifreeze is not too old and worn out and that the mix is the right percentage.
GL
Instructor
Joined: Mar 2009
Posts: 225
Likes: 1
From: Dripping Springs TX
Someone will chime in with the excerpt from the manual, but the second fan doesn't kick on til 228* I believe, so 230* is not a high temp, but normal. And you can always check to see if the radiator is crapped up.
Thread Starter
Instructor
Joined: Nov 2010
Posts: 138
Likes: 0
From: McKinney Tx
Melting Slicks
Joined: Apr 2000
Posts: 2,408
Likes: 3
From: Bel Air Md
Both suggestions above are good. This may sound stupid but is there fluid in the tank. How does the cap look, is t here signs that it may be leaking when hot. I was in our vette shop last week and a C4 was towed in for overheating. Low water level and a bad cap caused the problem. My 03 runs in the 195 with the A/c on and outside temp in the 90's
Melting Slicks
Joined: Mar 2008
Posts: 3,328
Likes: 40
From: Orangevale California
St. Jude Donor '10
Low speed fan turns on at 228, high speed at 240 or if you turn A/C on.
Check for debris like others have mentioned, but when it's over 100 outside, the blacktop temps are upwards of 140. That makes it hard to cool down.
The temps should go down once you start moving.
Check for debris like others have mentioned, but when it's over 100 outside, the blacktop temps are upwards of 140. That makes it hard to cool down.
The temps should go down once you start moving.
Race Director
Joined: Mar 2008
Posts: 12,413
Likes: 502
From: Rio Rancho NM
This is right from the tech manual.
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Instructor
Joined: Mar 2009
Posts: 225
Likes: 1
From: Dripping Springs TX
There it is. Thanks Chicago1. I found this from Evil Twin as well...
jack up the front of your car... there are two not one radiator type devices.. one is the radiator the other is the airconditioning condensor.. they sit piggy back to each other with onlt about two inches between them... everyone looks up under their car and see leaves and debris , plastic bags etc sticking to the radiator...they look up right where the front spoiler is.. and they clean that out.. but behind that spoiler and behind the radiator is the condensor.. and behind that are the fans... few people take the time to clean the other... the fans draw air through both radiator type devices... if you only clean the front one... you will not get much air circulation.. when I cleaned the second one.. I removed so much crap... it looked like a crabbed a hand full of stuff from a vacuum cleaner bag,.. I used a deatil brush on an eighteen inch dowel.. and I made an air blow nossle from a piece of copper pipe.. there is less than two inches of clearance but it needs to be cleaned...
Racer
Joined: Aug 2010
Posts: 469
Likes: 1
From: Heath Texas
See my post in the Z06 section:
http://forums.corvetteforum.com/c5-z...-hairball.html
Do this first. Will probably solve the problem. If not, you can move on to the next step.
http://forums.corvetteforum.com/c5-z...-hairball.html
Do this first. Will probably solve the problem. If not, you can move on to the next step.
Melting Slicks
Joined: Mar 2008
Posts: 3,328
Likes: 40
From: Orangevale California
St. Jude Donor '10
If after cleaning everything out and your temps are still high, you can always do what I did.
I installed a Cool-It from SacCityCorvette. It bypasses the relay and turns on the high speed fan. You can sit there in traffic and watch your temps start to fall. The really cool part is that it's remote controlled...no need to mount any type of switch in your car.
Here's a link.
http://www.saccitycorvette.com/COOLITv2.html
I installed a Cool-It from SacCityCorvette. It bypasses the relay and turns on the high speed fan. You can sit there in traffic and watch your temps start to fall. The really cool part is that it's remote controlled...no need to mount any type of switch in your car.
Here's a link.
http://www.saccitycorvette.com/COOLITv2.html
Melting Slicks
Joined: Sep 2007
Posts: 2,599
Likes: 1
From: Long Island, Nassau County New York
