You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
If you have any problems with the registration process or your account login, please contact contact us.
E12, E28, E34, E39, E60General discussion and technical help for all year 5 series cars.
User not setup in Rate My Car. Click here to set it up.
Cracked Overflow tank
I own a 2001 e39 540i. I have been having a coolant problem. I have replaced the hoses, radiator, thermostat, waterpump, and overflow tank. It seems that I solve the leak and then it will occur again.
Earlier this week, I had a coolant leak. Last night, I had the low coolant light go off. I pulled off the road, checked the coolant level and low and behold, I needed coolant. I topped off with some distilled water. I drive another .5 miles and the light came on again. It was dark, and I couldn't see the coolant leaking out, but I could hear it. I towed it to my local shop.
The overflow tank had a huge crack in it. Any idea why this would happen? Why would the pressure build so much that the overflow tank would crack. This is a bit disturbing.
This happened to me, and it happened more catastrophically than yours did. All my coolant gushed out through a 5" long split in the tank. The plastic just gets weak and sooner or later it cracks. It's not an unusual thing to happen. Lucky for me, it waited till I got home and in the driveway. As soon as I shut the car off, she blew.
11-17-2006, 03:19 PM
Similar Threads
