![]() If not, they can be replaced with only minimal loss of coolant and without need of removing hoses from the tank. Unresponsive coolant level sensors often come back to life. The good news: Once fully purged, temps and levels stabilize, system runs well for years. Anyone have any ideas before I go to my local BMW dealer and give. My coolant light keeps coming on at different times. If your coolant level is low, it could indicate that your vehicle is leaking coolant, so topping off your coolant reservoir may only be a short-term remedy. I read some postings here that advised me to get some BMW Coolant and top off and that should do the trick. front plastic wye collector (valley to water pump/thermostat mixer) starts to melt and sheds its twin tits and/or splits at the mold seam. My coolant light goes on and off at different times. because there are not enough sensors in the critical locations. The bad news: 'Risky" as-in trapped air impedes circulation, overheated coolant flashes to steam, but doesn't report itself to the instruments right away. Even then, you might THINK you have succeeded, but have not. It's possible, but slow, tedious, clumsy - and risky - to try to get all the air out and coolant IN, without vacuum. They are not terribly expensive if you already own an air-compressor. If you do not have a vacuum charging capability, shops often do have. Crucial to get the air out and coolant in. And the coolant level hasnt changed as far as I can tell. ![]() With trapped air, higher RPM sucks coolant out of the header tank. Isnt it somewhat dangerous to overfill the coolant My light keeps going on and off during long drives. Original design flaws in the cooling system - the expansion tank is not at the high point, but not-only - make these engines difficult to bleed and charge properly. Search for a better forum thread - one that actually addresses the core cause, eg: incomplete coolant charge due to trapped air. ![]() Not sure about e46, but on the e36, you can get cracks inside the tank that allow air in to the cooling system even when the coolant level is correct. That makes the float go up and down and makes the light come on. Low coolant affects the internal engine temperature which is protected by antifreezetriggering the CEL to come on to alert you of engine overheating. It wandered off in 2017 without ever showing understanding of the issue. If you have air in the cooling system, the level in the expansion tank will surge up and down with engine RPM. Yes, low coolant levels in your car radiator can trigger the check engine light to come on.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |