My car's been overheating... bought a new thermostat+gasket+sealer for my '91 240 and just assumed the thermostat would be really obvious to find. Well it isn't. Not for me, anyway. Can anyone help me out and give me an idea of where it is?

 

I'm pretty sure you can search and find the answer, or a chiltons will have a walkthrough, but i'll try my best
If I remember correctly, it's in where the top radiator hose goes into the engine. There are 3 screws to loosen & take off, which lets a small metal piece thats a curve come out, and ta da, there's your thermostat. Make sure the new one faces where the old one did, and use a sealant and gasket and do the opposite to close her up.
MAKE SURE TO BLEED THE SYSTEM FROM AIR WHEN YOU ARE DONE! 9/10 an overheating problem is due to air in the system. If this does not work, let me know and I have a walkthrough on how to see why your car is overheating.

Dr.

 

The Dr. is right. Air is no good. I had an over heating problem that was due to a harline crack in the radiator. I only use metal top radiators now.

An easy way to check if the therm is stuck is to run the car to operating temperature and squeezet the top hose and release to check for flow. If the therm hasn't been changed in the past 30,000 miles then it's due anyway. While you're at it replace the radiator cap too, the rubber on it is probably worn if the therm is bad.

 

I just got my 240 it seems to overheat way too much. they say that the bleeding wasn't done properly and that's why it's overheating. I squeezed the top radiator hose, but no fluid was in it.. it seemed pretty dry to me!! Any advice on what I should do? since the thermostat was 'supposely' replaced.

 

yeah, hit the email button for me and email me, i'll send you the overheating FAQ and how to properly bleed the coolant.

Dr.