Boiling over.
#1
Boiling over.
Having trouble finding my boiling over problem. Coming out of the over flow tank. Towed it to service and they had it for two days. Replaced thermo stat and they said everything is ok. Took it for a drive next weekend and over heated again coming out of the over flow tank. Towed it back to service. They had it for three days and they still say it's fine. They tested the fan and pressure. Can't find a thing that's wrong. They let it idle for awhile and took it for drive but can't replicate the problem.
Any body out there have the same problem.
Any body out there have the same problem.
#2
Pro
It sounds to me like you may have :
(1) drained and flushed the cooling system and you now have a air pocket. If this is the case, you need to expel that air pocket. I can point you in the right direction or you can look at the various threads here regarding this issue.
(2) If that is not the case, I would check the fan switch connector --- it is located on the passenger side of the fan about midway. it is a three prong connector that the middle prong tends to melt and short out -- disconnect it and inspect.
these are two of the most common culprits --- if neither of these are you problem let us know and we will go farther. I suspect (1) is your issue.
(1) drained and flushed the cooling system and you now have a air pocket. If this is the case, you need to expel that air pocket. I can point you in the right direction or you can look at the various threads here regarding this issue.
(2) If that is not the case, I would check the fan switch connector --- it is located on the passenger side of the fan about midway. it is a three prong connector that the middle prong tends to melt and short out -- disconnect it and inspect.
these are two of the most common culprits --- if neither of these are you problem let us know and we will go farther. I suspect (1) is your issue.
#4
Team Owner
Member Since: Aug 2006
Posts: 22,958
Received 2,882 Likes
on
1,905 Posts
C6 of Year Finalist (appearance mods) 2019
Remove air intake and radiator cover. Inspect the area between condenser and radiator for blockage. I have found a whole plastic ice bag complete with draw string in there. I made a wand to flush them out, do it every spring.
Gl
Gl
The following users liked this post:
HBsurfer (09-24-2015)
#5
Melting Slicks
This may sound odd, maybe even stupid, but, if not already done, check the radiator cap. When I owned my Callaway, I started having an overheating problem. Took it to 3 different shops & they couldn't find the problem. I finally talked to a good a friend & he suggested that the cap might not be sealing correctly & to replace it. Replaced it and never had a problem again ...
#6
Le Mans Master
Now that's a new one on me! Never heard of that before!
#7
Instructor
Mine boiled once because the temp sensor was faulty. Normally when they fail it sends completely false data like 0 or 999 but mine was reading 20 degrees celcius too low. This cause the cooling fan to not turn on.
Maybe check that sensor?
Also, a mechanic suggested a possible leak in the head gasket. This could cause piston compression to increase pressure in the cooling system causing the overflow to puke out coolant. It wouldn't boil, but it would look the same.
Hope it's the first! Easier to change compared to a head gasket.
Maybe check that sensor?
Also, a mechanic suggested a possible leak in the head gasket. This could cause piston compression to increase pressure in the cooling system causing the overflow to puke out coolant. It wouldn't boil, but it would look the same.
Hope it's the first! Easier to change compared to a head gasket.
#8
Team Owner
Member Since: Aug 2006
Posts: 22,958
Received 2,882 Likes
on
1,905 Posts
C6 of Year Finalist (appearance mods) 2019
Our bottom feeders are like Hoovers....suck up everything on the road. I made a wand to flush evert hung out.
90 degree shutoff adapter,garden hose female to 1/2 in copper compression fitting and a 2ft piece of 1/2 soft copper bent at 90 degrees. Crimped the bent end of copper so water sprays out with some force.
90 degree shutoff adapter,garden hose female to 1/2 in copper compression fitting and a 2ft piece of 1/2 soft copper bent at 90 degrees. Crimped the bent end of copper so water sprays out with some force.
The following users liked this post:
Hameister (09-24-2015)
#9
Burning Brakes
My other suggestion is to remove the radiator cap, start the engine and turn the heater all the way up with the fan on high and see if there's air in the lines somewhere. You may see bubbles coming from the radiator if that's the problem.
#10
Advanced
When it does overheat, is the fan running and the temp gage show high, that suggest the electronics are doing their job. If not, then as other post suggested, look at the fan circuits. Otherwise as others have posted, look for obstructions to the fan and/of air in system.
Best of luck.
Best of luck.
#11
Team Owner
Member Since: Jun 2005
Location: Northern, VA
Posts: 46,100
Received 2,477 Likes
on
1,940 Posts
St. Jude Donor '15
"In honor of jpee"
All good potential ideas above. You may want to not only post up your location (staying anonymously-addressed is one thing but...), and you may also want to make a list of the potential causes outlined above and ask the Service Advisor each one for being inspected and done. After all, you're paying/paid for it.
#12
Drifting
Thx for the tip WB. Haven't had a problem yet but will check that out today.
#13
Drifting
Something that hasn't been mentioned is the water pump. I have witnessed water pumps that simply no longer pump enough to do the job. This would come with rusty coolant most likely. Please let us know what you find.
#14
Pro
I totally forgot about how our corvettes act as street cleaners and suck everything up from the road. I bought from harbor freight a 18 inch air wand for about 3 dollars that is perfect for removing debris between the radiator and condenser.
#16
Le Mans Master
Our bottom feeders are like Hoovers....suck up everything on the road. I made a wand to flush evert hung out.
90 degree shutoff adapter,garden hose female to 1/2 in copper compression fitting and a 2ft piece of 1/2 soft copper bent at 90 degrees. Crimped the bent end of copper so water sprays out with some force.
90 degree shutoff adapter,garden hose female to 1/2 in copper compression fitting and a 2ft piece of 1/2 soft copper bent at 90 degrees. Crimped the bent end of copper so water sprays out with some force.
#17
Le Mans Master
#18
Instructor
Plugged T
Check the line from the top of the overflow tank to the far side of the radiator. There is an innocent looking T connector that goes to the head. Do not try to take the hose off the T because it will break easily. The T has a very small vent hole in it going to the head that can easily plug up with rust and cause overheating. Replacement cost for the hose assembly $90 but the result was worth it.
#19
Pro
Check the line from the top of the overflow tank to the far side of the radiator. There is an innocent looking T connector that goes to the head. Do not try to take the hose off the T because it will break easily. The T has a very small vent hole in it going to the head that can easily plug up with rust and cause overheating. Replacement cost for the hose assembly $90 but the result was worth it.
#20
Well thanks every one.
It was the cap giving me the problem.
Also I told them to put that electrical grease on fan connector.
I drove it tonight around the city with stop and go traffic for. three hours.
HUD in track mode to watch water temperature all good.
Also with this post some of us learnt a few cleaning techniques and various things.
So I am glad I ask this question got great suggestions.
So a BIG THANKS to the corvette forum. Saved me $$$$$ also.
A $ 28.00 cap the culprit.
It was the cap giving me the problem.
Also I told them to put that electrical grease on fan connector.
I drove it tonight around the city with stop and go traffic for. three hours.
HUD in track mode to watch water temperature all good.
Also with this post some of us learnt a few cleaning techniques and various things.
So I am glad I ask this question got great suggestions.
So a BIG THANKS to the corvette forum. Saved me $$$$$ also.
A $ 28.00 cap the culprit.