C4 General Discussion General C4 Corvette Discussion not covered in Tech

LT1- Fixed Overheating problem

Thread Tools
 
Search this Thread
 
Old Jul 22, 2005 | 10:01 AM
  #1  
Darkgh0st's Avatar
Darkgh0st
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Sep 2003
Posts: 3,474
Likes: 1
From: 1
Default LT1- Fixed Overheating problem

I went out and bought a new radiator cap as suggested in another thread on overheating. Next day on the way to work I blew a hose (Heater core). I think that indicates that the system wasnt pressuring enough because the cap must have been defective (which is why the hose didnt burst a long time ago).

Long story short, I replaced every single hose that wasnt already new from last year and the engine runs 20F cooler.

It was hitting 240F before on a hot day and now it rarely sees 220F


Thanks for the suggestions on the Cap and hoses. I didnt think it would make that much of a difference
Reply
Old Jul 22, 2005 | 01:27 PM
  #2  
robertpel9's Avatar
robertpel9
Safety Car
20 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2001
Posts: 3,753
Likes: 191
From: Orange County California
Default

Thats great. I just replaced the cap on my Ruby and saw similar results.
Reply
Old Jul 22, 2005 | 01:37 PM
  #3  
Wayne88's Avatar
Wayne88
Race Director
20 Year Member
Liked
Community Favorite
Top Answer: 5
 
Joined: Jan 2004
Posts: 18,725
Likes: 709
From: Bergen County, NJ
Default

But that hose must've been on its 'way out' anyway.
Reply
Old Jul 22, 2005 | 05:32 PM
  #4  
pwrful c4's Avatar
pwrful c4
Burning Brakes
 
Joined: Jun 2002
Posts: 1,159
Likes: 0
From: royal palm beach florida
Default

Glad you had good results,I change my cap whenever i do a coolant flush.
Reply
Old Jul 22, 2005 | 05:48 PM
  #5  
sickspeedvette's Avatar
sickspeedvette
Racer
 
Joined: Jul 2005
Posts: 301
Likes: 0
From: Dallas/Spring Texas
Default

a new cap really is cheap insurance, and will fix more that a lot of people think
Reply
Old Jul 22, 2005 | 06:25 PM
  #6  
Dartvader's Avatar
Dartvader
Instructor
 
Joined: May 2005
Posts: 218
Likes: 0
From: Gaithersburg Maryland
Default

Would someone mind describing the flush sequence again? Can you just fill it back up at the high tank, or do you hve to burp it in some way? I would have taken the hoses off in a heart beat to put in the camber brace if I had felt comfortable about this question.
Reply
Old Jul 24, 2005 | 06:47 PM
  #7  
chevyc4's Avatar
chevyc4
Instructor
10 Year Member
 
Joined: Jul 2005
Posts: 122
Likes: 0
From: GERMANTOWN TN
Default

Originally Posted by Dartvader
Would someone mind describing the flush sequence again? Can you just fill it back up at the high tank, or do you hve to burp it in some way? I would have taken the hoses off in a heart beat to put in the camber brace if I had felt comfortable about this question.
To flush the system, just go to your local auto parts store and pick up a Preston flush and fill kit (cheap!). Attach the included tee to the upper heater hose that goes to the engine block (this will make future flushes easy). Open the radiator drain and take the upper radiator hose off and hook up your garden hose to the tee. Then crank your car up, turn the heater on high, and turn the water on. When the water runs clear out of the upper radiator hose, turn the water off and then turn the car off. Hook up and tighten everything (remember to put the little cap back on the flushing tee). Open both bleed screws (throttle body and thermostat housing), take the cap off the surge tank, and fill it up with coolant until straight coolant and no bubbles come out of the bleed screws. Tighten both bleed screws and fill the surge tank up all the way and put your cap back on. Drive around for a little while and then recheck the coolant level.
Reply

Get notified of new replies

To LT1- Fixed Overheating problem





All times are GMT -4. The time now is 04:41 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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