Question about 2000 BMW 3 Series
I assume you have checked the cooling system to ensure that first that it is full of coolant and second that there are no leaks and the radiator cap is in good condition. The heater hoses and those pesky little bypass hoses in the cooling system tend to go hard and split if they are over 10 years old, allowing coolant loss. If there are no leaks or air locks, the over heating could also be caused by a clogged radiator (more than 15% restriction in the radiator flow capacity will cause overheating problems), a faulty water pump or as you suspect, a faulty thermostat.
If there are no leaks but undetected loss of coolant, then it could indicate a problem with the head gasket (Usually caused by allowing engine to become excessively overheated when cooling system has run dry) allowing high pressure combustion gases into the engine water jacket, which super heats the coolant which then boils off, and is released via the cap.
If unsure take vehicle to cooling system specialist and have them do a pressure test and more thorough diagnosis.
Posted on Sep 07, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 21, 2016 | Cars & Trucks
Nov 14, 2012 | Cars & Trucks
Dec 02, 2010 | BMW 530 Cars & Trucks
Nov 28, 2010 | 1996 Toyota Avalon
Nov 24, 2009 | 2000 Pontiac Sunfire
Jun 01, 2009 | 1994 Pontiac Grand Am
May 24, 2009 | 2004 Dodge Ram
Apr 28, 2009 | 1995 Dodge Dakota
164 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: