Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

Over Heating

Thread Tools
 
Search this Thread
 
Old Dec 30, 2008 | 10:24 AM
  #1  
rondoddge's Avatar
rondoddge
Thread Starter
3rd Gear
 
Joined: Dec 2008
Posts: 3
Likes: 0
Default Over Heating

My friend has a 98 corvette that is over heating, I figured you guys might have an idea. He has full oil and fool coolant. He said that his light came on, and he opened his hood and coolant started to boil. Any ideas?
Reply
Old Dec 30, 2008 | 10:25 AM
  #2  
VinnyT's Avatar
VinnyT
Le Mans Master
15 Year Member
 
Joined: Jan 2007
Posts: 7,364
Likes: 6
From: Rocky Mount Virginia
Default

Could be a clogged radiator. Check to see if he has the orange Dexcool. This coolant if not properly checked can turn into sludge. Couls also be a stuck thermostat.
Reply
Old Dec 30, 2008 | 10:36 AM
  #3  
BT-01-vette's Avatar
BT-01-vette
Le Mans Master
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2002
Posts: 7,275
Likes: 19
From: Camden County NJ
Default

Another thing to check is the space between the radiator and AC. There is usually a nice build up of crap if you don't clean it out regularly. Best way to reach it is from underneath. Drive the car up a set of ramps and take a look. I clean the crap out (leaves usually on dude did pickup a frog) with a not too long thin stick. Dopn't poke at the radiator just go in a back and forth motion...wear safey eye wear.
Reply
Old Dec 30, 2008 | 11:24 AM
  #4  
rondoddge's Avatar
rondoddge
Thread Starter
3rd Gear
 
Joined: Dec 2008
Posts: 3
Likes: 0
Default

do you guys know what the normal operating temperature of the coolant should be?
Reply
Old Dec 30, 2008 | 11:30 AM
  #5  
VinnyT's Avatar
VinnyT
Le Mans Master
15 Year Member
 
Joined: Jan 2007
Posts: 7,364
Likes: 6
From: Rocky Mount Virginia
Default

Stock temps should be 200-225
Reply
Old Dec 30, 2008 | 11:32 AM
  #6  
BlueDream's Avatar
BlueDream
Safety Car
10 Year Member
 
Joined: Nov 2002
Posts: 4,025
Likes: 2
From: Valdosta GA
Default

Might also want to make sure that the electric fans are coming on. This can be done while the car is on the ramps checking for debris as well. I don't remember what the factory setting for the fans are but if I remember correctly the second fan doesn't usually come on until around 220 or so (I think you can get it to come on earlier if you turn on the air conditioner).

I'm sure some more knowledgable folks will show up soon. I changed my fan settings, radiator and wather pump early on so mine rarely ever gets above 180 as it is.
Reply
Old Dec 30, 2008 | 12:10 PM
  #7  
rondoddge's Avatar
rondoddge
Thread Starter
3rd Gear
 
Joined: Dec 2008
Posts: 3
Likes: 0
Default

thanks a lot guys, appreciate the responses.
Reply
Old Dec 30, 2008 | 02:10 PM
  #8  
killain's Avatar
killain
Race Director
Supporting Lifetime Gold
Veteran: Navy
St. Jude 20 Year Donor
25 Year Member
Top Answer: 1
 
Joined: Aug 1999
Posts: 11,112
Likes: 668
From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
Default

Originally Posted by BlueDream
Might also want to make sure that the electric fans are coming on. This can be done while the car is on the ramps checking for debris as well. I don't remember what the factory setting for the fans are but if I remember correctly the second fan doesn't usually come on until around 220 or so (I think you can get it to come on earlier if you turn on the air conditioner).

I'm sure some more knowledgable folks will show up soon. I changed my fan settings, radiator and wather pump early on so mine rarely ever gets above 180 as it is.
As noted above, I'd clean out the radiator space and check the thermostat, flush the radiator and refill and turn on the A/C the fans should come on at least one of them.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Dec 30, 2008 | 04:04 PM
  #9  
EZEDDIE's Avatar
EZEDDIE
Racer
 
Joined: Nov 2005
Posts: 450
Likes: 0
From: Northern N.J. NJ
Default

If a recall correctly, slow speed fan kicks on at 217 and high speed fan kicks on at 235.

I put in a 160 termostat and had my fans reconfigured to turn on earlier. I used to run at 220-225. Now I run at 170 - 180.
Reply
Old Dec 30, 2008 | 04:35 PM
  #10  
VETTE47's Avatar
VETTE47
Instructor
 
Joined: Nov 2006
Posts: 164
Likes: 0
From: WHERE EVER I LAY MY HAT AZ
Default

Spray brake dust cleaner on the radiator let it set for a mimnute and power wash it off and watch all the black dirt run down your driveway. It worked for me no problems since.
Reply

Get notified of new replies

To Over Heating





All times are GMT -4. The time now is 01:58 AM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE