Coolant level continuously falls.
Thread Starter
Pro
Joined: Jul 2008
Posts: 623
Likes: 1
From: Atlanta Ga
Coolant level continuously falls.
I keep losing coolant in my 99 vert. I have 43k on the motor and have absolutely no leak that I can see anywhere. I leave the car with no mat under the car in my garage to see if I have leakage and running or not I'm absolutely dry. I check the oil and there is nothing but oil so no cracked head or block and no bad head gasket. The car runs flawlessly also. I keep losing a little at a time as the sensor keeps lighting up saying I'm low. I fill it back up and a month or so later the light turns on again.
Where the heck is this coolant going????
Where the heck is this coolant going????
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 890
From: South Western Ontario
Ya, it's going into the engine. If it gets worse it can fill a cylinder while the car is off and then it will hydralock and either break the starter off the engine or blow out a cylinder the next time you try to start it.
Peter
Peter
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
You may not see evidence in the garage. Once the system is up to temp any hair line crack will create this effect. Two of the culprits, especially in a car that is 11 years old, no matter what the mileage, is fatigue. These two issues are relatively common in a car this age.. One is the expansion tanks on the radiator are plastic and can crack, also they are just crimped on with a gasket that could be bad. ( very common, evidence of this can be seen on the radiator support under the car, with stains from a leak. The other culprit is a very slight crack in the expansion tank connector ,which is under the tank.
Good Luck
Bill aka ET
Good Luck
Bill aka ET
Le Mans Master
Joined: Jul 2010
Posts: 6,004
Likes: 723
I keep losing coolant in my 99 vert. I have 43k on the motor and have absolutely no leak that I can see anywhere. I leave the car with no mat under the car in my garage to see if I have leakage and running or not I'm absolutely dry. I check the oil and there is nothing but oil so no cracked head or block and no bad head gasket. The car runs flawlessly also. I keep losing a little at a time as the sensor keeps lighting up saying I'm low. I fill it back up and a month or so later the light turns on again.
Where the heck is this coolant going????
Where the heck is this coolant going????
Drifting
Joined: Oct 2003
Posts: 1,932
Likes: 4
From: Warrenville Il
Just an FYI, if you do think the tank may be the culprit. The C5 came with different styles over the C5 timeframe. They look the same but the coolant level sensor works differently. just make sure you get the correct model. Good luck
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