Mercedes-Benz Forum banner
1 - 7 of 7 Posts

·
Registered
1985 Mercedes 300D
Joined
·
9 Posts
Discussion Starter · #1 ·
This may be a dumb question, but I have to ask it anyway.

I have installed a new thermostat on my 85 300d and did not pay attention to the direction the new tstat went into the housing. I installed it the way I assumed it went (spring side away from the engine block). My temps get up to 100 - 115 Celsius. With old tstat my temps max'd out at 65 - 70 C. Did I install correctly?

This my first Mercedes and I love the vehicle, just don't know much about it yet!!:)
 

·
Registered
85 300D
Joined
·
390 Posts
yup, you got 'er backwards
 

·
Registered
'84 300D/ dakota benz trk. Sold... miss it. "88 260E '91 190E 2.6 '89 Volvo 240DL "85 300D
Joined
·
1,252 Posts
i saw the link posted for diesel giant. we used to drill a 1/8 hole in t stats just in case. i would not drill as many holes as he did personally. maybe 1 .250 hole thats it.
 

·
Registered
'84 300D/ dakota benz trk. Sold... miss it. "88 260E '91 190E 2.6 '89 Volvo 240DL "85 300D
Joined
·
1,252 Posts
it never hurts to have a little insurance. that insurance is a .125 hole in the rim of the t-stat. it could save your engine or at least get you home in case of t-stat failure. you would never know its been done unless your t-stat sticks. when that happens, your temp would go up some, but not redline. you would know something is wrong, but you would make it home.
 

·
Registered
1985 Mercedes 300D
Joined
·
9 Posts
Discussion Starter · #7 ·
thermostat

Thank you for all your input. I will switch it around maybe tonight and take it for a spin. I am sure it will be better when I install it correctly.
 
1 - 7 of 7 Posts
Top