C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Overheating

Thread Tools
 
Search this Thread
 
Old Jul 3, 2010 | 03:46 PM
  #1  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default Overheating

The car is a 2003 Z with a D1SC Procharger.

The car ran perfectly 2 days ago on a 200 mile trip with stop and go traffic. This morning, I drove it down the road and literally within 2 miles, it was pegging 280 degrees. I immediately turned it off and let it cool. I drove the car straight home and checked things out. Here is what I have done:

I checked for any obvious leaks and found none

I felt both the upper and lower radiator hoses and they were both hot

I replaced the thermostat and refilled the reservoir with coolant. As I was attempting to burp the system of air, coolant began boiling out of the reservoir.

I have performed the basic blown head gasket checks and everything checks out well - There is no oil in the coolant and no coolant in the oil. The car is not smoking at idle and I cannot smell any gas/oil in the coolant.

Any input would be great.

Thanks
Reply
Old Jul 3, 2010 | 04:13 PM
  #2  
PewtVette's Avatar
PewtVette
Burning Brakes
 
Joined: Aug 2007
Posts: 756
Likes: 1
From: Oakton Virginia
Default

You didn't mention the fans- are they turning on?
Reply
Old Jul 3, 2010 | 04:34 PM
  #3  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default

Originally Posted by PewtVette
You didn't mention the fans- are they turning on?
Yes, the fans are cutting on. Thanks
Reply
Old Jul 3, 2010 | 04:48 PM
  #4  
DeltaBravo's Avatar
DeltaBravo
Instructor
Supporting Lifetime
 
Joined: Apr 2008
Posts: 239
Likes: 2
From: Georgetown TX
Default

Did you check for debris in the A/C condenser and/or radiator? Mighta picked up a plastic bag or something.
Reply
Old Jul 3, 2010 | 05:06 PM
  #5  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default

Originally Posted by DeltaBravo
Did you check for debris in the A/C condenser and/or radiator? Mighta picked up a plastic bag or something.
Yup, I checked and everything is clear.

Could a bad radiator cap cause these issues?
Reply
Old Jul 3, 2010 | 06:37 PM
  #6  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default

well, I was out messing around with the car in the driveway - Heres the latest observation:

While the car is idling, you can fully pinch the upper radiator hose and you cannot feel fluid running through it.

With that said, Id assume I would need a new waterpump and or radiator power flush? What are some known clogging points on these cars? Thanks
Reply
Old Jul 3, 2010 | 06:54 PM
  #7  
nuck's Avatar
nuck
Burning Brakes
15 Year Member
 
Joined: Feb 2004
Posts: 1,231
Likes: 0
From: edmonton ab
Default

Have you ever washed the rad? My P1SC car had heating issues at 25k miles. I did replace the the rad cap but I also invented a tool out of old brake line.

http://forums.corvetteforum.com/c5-t...post1566568782

This was a NV car so I was quite surprised at the amount of dirt that came out.
Reply
Old Jul 4, 2010 | 12:13 AM
  #8  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default

Originally Posted by nuck
Have you ever washed the rad? My P1SC car had heating issues at 25k miles. I did replace the the rad cap but I also invented a tool out of old brake line.

http://forums.corvetteforum.com/c5-t...post1566568782

This was a NV car so I was quite surprised at the amount of dirt that came out.
Neat - My radiator area is clean though, that was the first thing I checked
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 Jul 4, 2010 | 11:12 AM
  #9  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default

ttt
Reply
Old Jul 5, 2010 | 01:07 PM
  #10  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default

bump
Reply
Old Jul 5, 2010 | 03:28 PM
  #11  
David426's Avatar
David426
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
Default

280 degrees?
Reply
Old Jul 6, 2010 | 04:30 AM
  #12  
brookliner7's Avatar
brookliner7
Intermediate
 
Joined: May 2007
Posts: 25
Likes: 0
Default

Take the cap off at night when the engine is cool.
In the morning, see if the coolant level has dropped.
Being just a little low on coolant can make it overheat.
Reply
Old Jul 6, 2010 | 07:03 AM
  #13  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default

Originally Posted by brookliner7
Take the cap off at night when the engine is cool.
In the morning, see if the coolant level has dropped.
Being just a little low on coolant can make it overheat.
Will do, thanks.
Reply
Old Jul 6, 2010 | 07:04 AM
  #14  
thspoq's Avatar
thspoq
Thread Starter
Advanced
 
Joined: Sep 2007
Posts: 70
Likes: 0
Default

Is it possible for a water pump to fail and there be no coolant leakage from the water pump?
Reply
Old Jul 6, 2010 | 12:49 PM
  #15  
chuckeb84's Avatar
chuckeb84
Pro
 
Joined: Jul 2010
Posts: 666
Likes: 2
From: western springs illinois
Default

My 84 hit 300 degrees
Will take the shroud off and look for debris
I bought a switch to turn fan on manually
Reply
Old Jul 6, 2010 | 02:14 PM
  #16  
chuckeb84's Avatar
chuckeb84
Pro
 
Joined: Jul 2010
Posts: 666
Likes: 2
From: western springs illinois
Default 1984 corvette overheats

Is there a way to keep cool

I hit 300 degrees last week

What does the underside of the front end look like?
Maybe I'm missing a part of the scoop
Reply
Old Jul 9, 2010 | 12:00 PM
  #17  
jaa1992's Avatar
jaa1992
Le Mans Master
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2001
Posts: 7,999
Likes: 14
From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
Default

Originally Posted by chuckeb84
Is there a way to keep cool

I hit 300 degrees last week

What does the underside of the front end look like?
Maybe I'm missing a part of the scoop
Chuck - check out the C4 tech section for answers to your 84's problem. I'll bet you need to pull everything out, replace hoses, clean the condenser and radiator. C4's suck EVERYTHING up from the road. You can't clean it out from the bottom, have to pull the shroud and everything to get to it.
Reply
Old Jul 9, 2010 | 12:08 PM
  #18  
chaase's Avatar
chaase
Team Owner
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
Default

Originally Posted by thspoq
Is it possible for a water pump to fail and there be no coolant leakage from the water pump?
Yes. If the impeller breaks or seizes up, you won't get a leak and you will over heat.
Reply

Get notified of new replies

To Overheating





All times are GMT -4. The time now is 09:04 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