Open your hood, on your left side just next to the Power Steering reserve.
Just go to this website guaranteed you will get your answer. http://www.lakesidedp.com/volvo/Thermostat/
The Volvo 850 has two horns in front of the radiator, lift the hood and their they are.
http://www.matthewsvolvosite.com/2009/02/17/replace-thermostat-volvo-850-s70-v70-c70-or-xc70/
where are the flashers located
There's no Volvo 850 2000. What you likely saw was a S70.
It is a T40. To remove the housing you first have to remove the power steering pump.
The 1997 Volvo 850 low pressure port is located on the air conditioning compressor. The low pressure port will be on the right hand side of the compressor.
The 850 does not use a MAP sensor. It uses a MAF sensor that is located and attached to the air filter housing lid
The 1997 Volvo 850 evaporator drain tube is located on the bottom of the air conditioner compressor. The evaporator drain tube carries condensation away from the engine.
There's no 2.0L. Volvo 850 engine. Only 2.3L. & 2.4L. ...
On the 93 it is under the hood right in front of the steering wheel.
You have to remove the glove-box. You will find the relay back - to left.