Coolant Leak
Thread Starter
Heel & Toe
Joined: Aug 2019
Posts: 18
Likes: 0
Coolant Leak
2005 Corvette. I am noticing coolant on the garage floor usually in the morning after the car has been sitting overnight. I never see anything during the day while driving about. What could be the source and why only in the morning?
Race Director
Joined: Sep 2009
Posts: 11,351
Likes: 2,445
From: Eastern
Check all the hose clamps and those hoses for any leaks. Check the overflow tank as well at the hose connections,
Good chance that it is the water pump seal leaking. I had the same scenario on my 06, and it was the water pump seal leaking, but only when it stopped at a certain spot on the shaft of the pump.
Changed out the pump, and no issues since.
Good chance that it is the water pump seal leaking. I had the same scenario on my 06, and it was the water pump seal leaking, but only when it stopped at a certain spot on the shaft of the pump.
Changed out the pump, and no issues since.
Race Director
Joined: Dec 2002
Posts: 10,468
Likes: 1,149
From: Wayne Township WI
Often posted there's a coolant line T-fitting in front of engine.
Bering made of plastic as it ages it cracks causing a leak.
Some members w/ this issue replaced plastic fitting w/ one made of metal.
Difficult to isolate because coolant evaporates due to engine heat until engine's shut off, then it leaks.
Check the T fitting if only to rule it out.
Bering made of plastic as it ages it cracks causing a leak.
Some members w/ this issue replaced plastic fitting w/ one made of metal.
Difficult to isolate because coolant evaporates due to engine heat until engine's shut off, then it leaks.
Check the T fitting if only to rule it out.
Race Director
Joined: Apr 2007
Posts: 16,025
Likes: 1,656
From: Toronto, Canada
C7 of the Year - Unmodified Finalist 2021
Did you check the colour, does it have a greasy feel to it?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Safety Car
Joined: Sep 2013
Posts: 4,355
Likes: 2,633
From: Draper Utah
Drifting
Joined: May 2013
Posts: 1,517
Likes: 202
From: Mountain View California
Safety Car
Joined: Sep 2013
Posts: 4,355
Likes: 2,633
From: Draper Utah
The tee is on top of the radiator, under the air bridge, just in front of the power steering pump.
Replacing the tee is a 5 minute job. I did mine without removing the air bridge. If it's time for a new air cleaner in your car that would be the perfect time to replace the tee as you will have removed the air bridge to replace the filter and access will be extremely simple at the point.
Replacing the tee is a 5 minute job. I did mine without removing the air bridge. If it's time for a new air cleaner in your car that would be the perfect time to replace the tee as you will have removed the air bridge to replace the filter and access will be extremely simple at the point.
Advanced
Joined: Jun 2018
Posts: 85
Likes: 18
From: Bullhead City, Arizona
I bought my car from the original owner two weeks ago. When checking the tee (already had the metal replacement), it fell apart in my hands while disassembling the hoses. It was ready to give out at any moment. I also ended up replacing the smaller diameter hose in the tee. It had a rub mark on it from the MAF housing. That would have leaked as well.