General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

Coolant overflowing????

Thread Tools
 
Search this Thread
 
Old Apr 18, 2007 | 08:39 PM
  #1  
kevins2000LS1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (11)
 
Joined: Oct 2006
Posts: 591
Likes: 0
From: Greenville,NC
Default Coolant overflowing????

I turned my car off tonight and looked like i had coolant boiling back thru the fill cap or the overfill. I couldn't tell which it was dark. just put the radiator back in i didnt know if i might have overfilled it ???
Reply
Old Apr 18, 2007 | 10:41 PM
  #2  
96slow6's Avatar
Launching!
 
Joined: Aug 2005
Posts: 231
Likes: 0
Default

You cant over fill a radiator. You probably need to bleed the system some more.
Reply
Old Apr 18, 2007 | 10:45 PM
  #3  
ksuburban's Avatar
On The Tree
 
Joined: Jun 2006
Posts: 134
Likes: 0
Default

Sounds like you have air in the system still.
Reply
Old Apr 18, 2007 | 10:58 PM
  #4  
01WS6/tamu's Avatar
TECH Senior Member
20 Year Member
iTrader: (37)
 
Joined: Oct 2004
Posts: 5,121
Likes: 74
From: somewhere in TX
Default

It will bleed most of it itself as long as you keep the recovery tank full. It's possible the cap could be bad too.
Reply
Old Apr 18, 2007 | 11:25 PM
  #5  
z28_n_tx's Avatar
TECH Resident
20 Year Member
iTrader: (7)
 
Joined: Sep 2005
Posts: 894
Likes: 1
From: TexaS
Default

Originally Posted by 01WS6/tamu
It will bleed most of it itself as long as you keep the recovery tank full. It's possible the cap could be bad too.
x2.....
Reply
Old Apr 19, 2007 | 05:46 AM
  #6  
kevins2000LS1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (11)
 
Joined: Oct 2006
Posts: 591
Likes: 0
From: Greenville,NC
Default

How could you tell that the cap is bad ??
Reply
Old Apr 19, 2007 | 05:36 PM
  #7  
96slow6's Avatar
Launching!
 
Joined: Aug 2005
Posts: 231
Likes: 0
Default

It leaks everytime the system gets hot.
Reply
Old Apr 19, 2007 | 08:57 PM
  #8  
z28_n_tx's Avatar
TECH Resident
20 Year Member
iTrader: (7)
 
Joined: Sep 2005
Posts: 894
Likes: 1
From: TexaS
Default

Originally Posted by kevins2000LS1
How could you tell that the cap is bad ??
just replace it and see if it stops...its a cheap easy fix.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Apr 20, 2007 | 03:57 PM
  #9  
kevins2000LS1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (11)
 
Joined: Oct 2006
Posts: 591
Likes: 0
From: Greenville,NC
Default

Welli think you'll helped me fixed the problem. I rebleeded the system and filled the reservoir up ( itwas empty almost) and it does fine now. Im guessing the reservoir was low and sucking air in the system. Thanks LS1tech members
Reply
Old Apr 20, 2007 | 10:08 PM
  #10  
01WS6/tamu's Avatar
TECH Senior Member
20 Year Member
iTrader: (37)
 
Joined: Oct 2004
Posts: 5,121
Likes: 74
From: somewhere in TX
Default

Thats what we be here for.
Reply
Old Apr 24, 2007 | 03:14 PM
  #11  
Pharm0r's Avatar
TECH Regular
iTrader: (17)
 
Joined: Oct 2006
Posts: 473
Likes: 0
From: va beach, va
Default

any other fixes? i keep having it boil up through the rez. im replaceing my tstat and upper/lower rad. hoses today to see if that fixes it....
Reply
Old Apr 24, 2007 | 03:30 PM
  #12  
Cole Train's Avatar
TECH Addict
iTrader: (30)
 
Joined: Jul 2006
Posts: 2,829
Likes: 5
From: MN
Default

i JUST had the same problemlol geez this is common. I replaced my radiator cap($7.50 FROM DEALER) and it fixed it. The seals were cracked.
Reply
Old Apr 24, 2007 | 06:09 PM
  #13  
Pharm0r's Avatar
TECH Regular
iTrader: (17)
 
Joined: Oct 2006
Posts: 473
Likes: 0
From: va beach, va
Default

well i replaced my radiator cap and the problem persisted, a month later (today) it dawned on me to replace the rez. cap. ill get back to you if it works. as for other people, might also be the radiator hoses (upper or lower) which i also replaced along with the thermastat. all this before i thought to just replace the rez. cap =( wasted money tsk tsk.



EDIT: Nope. still gettin it.

Last edited by Pharm0r; Apr 24, 2007 at 06:24 PM.
Reply
Old Apr 24, 2007 | 07:45 PM
  #14  
96slow6's Avatar
Launching!
 
Joined: Aug 2005
Posts: 231
Likes: 0
Default

Of coarse the res cap did nothing it doesnt hold any pressure.
Reply
Old Apr 24, 2007 | 07:52 PM
  #15  
1999ssls1's Avatar
TECH Enthusiast
iTrader: (71)
 
Joined: Dec 2006
Posts: 737
Likes: 0
From: Chattanooga,TN
Default

Sounds like you have more serious problems..
Reply




All times are GMT -5. The time now is 09:41 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE