|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
Coolant leak and overheating?
|
|
12-18-2018, 05:35 AM | #1 |
First Lieutenant
64
Rep 335
Posts |
Coolant leak and overheating?
Last night I was driving home from some errands and noticed my car wouldn't boost past 4lbs, soon after I get an engine overheating symbol. I pull over turn the car off, lift the hood, and notice coolant is all over the place and my cooling fan is on full blast. After the car cools down, i pop open the expansion tank and it's totally empty.. Mind you i filled this thing up a few and ago. I'm thinking failing water pump or hopefully crack in my expansion tank. Any ideas on what might be wrong?
|
12-18-2018, 09:47 PM | #3 |
First Lieutenant
64
Rep 335
Posts |
|
Appreciate
0
|
12-27-2018, 10:54 PM | #4 |
Private
54
Rep 59
Posts |
I had one that was hard to find. When engine was cold, it was not leaking. When hot, it was leaking.
So I took the water pump out. I put zip locs on holes with tie wrap On one of the zip loc, I insert a compression air nozzle Then spraying compressed air in it, I saw a very little crack on the plastic case close to the edges/rivets. If you'd like to see an easier way to remove your water pump than removing steering and sway bar... and if you need, thermostat... |
Appreciate
0
|
12-29-2018, 06:14 PM | #5 |
Private First Class
93
Rep 163
Posts |
Can you pull codes? Write down what it says. Then reset and fill up the reservoir and retest. Do you still see pump codes?
The coolant system runs under pressure, so you may find that it only starts leaking through a crack once it gets hot. |
Appreciate
0
|
Bookmarks |
|
|