C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

please help coolant problem!!!!!!!!!!!!!!!!!!!!

Thread Tools
 
Search this Thread
 
Old Apr 3, 2002 | 07:21 PM
  #1  
vent69's Avatar
vent69
Thread Starter
Intermediate
 
Joined: Nov 2001
Posts: 33
Likes: 0
From: Inola ok
Default please help coolant problem!!!!!!!!!!!!!!!!!!!!

on my 94 after it sits and idles for about 3-4 minutes it begins to get
very warm is this normal?? i have read my book and cant get a straight
anwser out of it. is also begins to overflow if i let it idle to long is this caused by overfilling the resovior i have also read that there is a hill fill coolant is this where my problems are do you have to keep this section maintaned or does
it run off the resovior please help this is very upsetting by babbys leaking

thanx
VENT :mad :mad
Reply
Old Apr 4, 2002 | 12:39 AM
  #2  
merrick's Avatar
merrick
Pro
15 Year Member
 
Joined: Sep 2001
Posts: 743
Likes: 4
From: Guyton GA
Default Re: please help coolant problem!!!!!!!!!!!!!!!!!!!! (vent69)

What do you mean very warm? Last time I checked fire gives off heat.
You probably have air in the cooling system if it is an LT1.
Reply
Old Apr 4, 2002 | 01:05 AM
  #3  
BLIZZ's Avatar
BLIZZ
Advanced
 
Joined: Aug 2001
Posts: 68
Likes: 0
From: Ft.Myers Fl.
Default Re: please help coolant problem!!!!!!!!!!!!!!!!!!!! (vent69)

You definetly have some cooling problems. It is not normal. What is youre temp. reading? It could be a stuck or improper degree thermostat, clogged radiator, etc. Not knowing the history of youre vehicle, first thing I would do is drain the system, install the proper stat, then go from there. You could run into some serious and costly head damage if you continue to allow it to run hot or overheat. Also check the fan(s) to see if they are activating at the proper temp. as well as both fans coming on when you turn on your A.C.. If this is too much to tackle on your own. Make some inquires as to who in your area is capable of checking out the system. Too bad youre not my neighbor!! Good Luck
Reply
Old Apr 4, 2002 | 09:35 PM
  #4  
vent69's Avatar
vent69
Thread Starter
Intermediate
 
Joined: Nov 2001
Posts: 33
Likes: 0
From: Inola ok
Default Re: please help coolant problem!!!!!!!!!!!!!!!!!!!! (BLIZZ)

it runs at about 225 this seams high to me or maybe i'm wrong???
Reply
Old Apr 4, 2002 | 09:48 PM
  #5  
RadPolo96's Avatar
RadPolo96
Drifting
 
Joined: Oct 2001
Posts: 1,759
Likes: 0
From: Round Rock,Austin, Texas
Default Re: please help coolant problem!!!!!!!!!!!!!!!!!!!! (vent69)

Thats not to bad, when these cars sit at idle for a while they heat up fast. That seems like an ok temp. Mine does that sometimes.
Reply
Old Apr 4, 2002 | 10:01 PM
  #6  
c4cruiser's Avatar
c4cruiser
Team Owner
20 Year Member
Veteran: Army
 
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Default Re: please help coolant problem!!!!!!!!!!!!!!!!!!!! (vent69)

225 is way too high for normal driving. Mine will go about that high when idling initially but the fans will come on and temp will then drop back to 195-200. I would look first to see if the expansion tank is full. With the engine cold, remove the cap and see where the coolant level is. It should be right at the base of the neck. Coolant is sucked in from the overflow container when needed and then pushed back out. Make sure the coolant in the overflow is at the mark for cold when you check the expansion tank and fill both with coolant if needed.

Another possibility is a stuck thermostat. Remove it and place it in pot of water. Heat the water and check with a thermometer to see when the stat opens; it should be 195 if stock. The're cheap, so you may just want to replace it anyway. Do the cooling fans come on when the temp rises? Run with the A/C on and that should force the second fan to stay on. Does the temp go down? this could be an indication that the relays aren't working or the fans themselves are not running. You will hear them come on even with the engine running.

Look for any debris in the lower portion of the radiator, espciallly between the A/C condenser and the radiator. You can use a water or air hose to push out any leaves, dirt, small animals or even the parts that fell off the Mustang in front of you!

A good system flush is the next thing. There could be blockages in the radiator or just gunk anywhere in the system. A radiator shop would be the best bet for this as they can also do a pressure test of the system to make sure there are no leaks that would cause coolant loss.

Hope this helps!! Good Luck!


[Modified by c4cruiser, 6:03 PM 4/4/2002]
Reply

Get notified of new replies

To please help coolant problem!!!!!!!!!!!!!!!!!!!!





All times are GMT -4. The time now is 01:36 PM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
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-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
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