Just look at every place coolant travels. Exterior the dye will show when doing a pressure test pretty easy. Have to remove some plastic, but you may find some wetness in the area and carpet. You may get lucky and see the dye from inside. You could have a heater core issue, which is hard to find - the tell is usually the inside front windshield and your nose. If you want to figure it out properly do a pressure test and add some coolant dye then replace the offending part. It is sold and it works and usually causes no issues - it has been around a long time for a reason. The rest is just floating around your system and building up here and there. You are adding tiny particles to the coolant that find their way to the leak and fill the hole. This points to sensor.īars Leak works, but can cause a mess. Look to see if you can short the sensor at the harness and see if light goes out. Clean the sensor and see if anything changes. Low tech approach - with intelligence for overheat: Pull the sensor harness and see if anything changes. Many thanks in advance I really appreciate all the help this forum has been a great source of knowledge ! As I said I've run the car a lot it does not overheat the coolant is moving freely through the system.īefore I go and replace the coolant level sensor (which I looked up and is actually pretty easy and relatively inexpensive ) I'm wondering if anyone has experience with the Bars and if the chemical components of the bars somehow throw off the coolant level detection system.?

However now I have an issue where my system thinks I am low on coolant so I get the red point on the dash as well as 'coolant low stop engine' warning. I have run the car for at least a hundred miles now and I no longer smell coolant and my levels have not dropped at all. I went ahead and got some palletized Bars Stop Leak for my radiator I put it all in through the reservoir. 2 years into owning it, now about every two weeks I had to refill the coolant reservoir there are no puddles and I can smell coolant through my vent system.

Coolant level low stop engine volvo