I have three 300D's (two 92's and one 93) and two of them operate at 80-90C range and blow lots of hot air.

One of the '92 300D's has always operated (since I've owned it) in the 70-80C range and blows 'warm' air.

Is this a sign of a bad thermostat or maybe the wrong one installed at one time?

It's not a big deal - it's just one of those things that makes me go "hmmm".

-John

.

probably bad t-stat (if any)
.

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w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD 2.88 diff,EGR blinded
next wish/project: w114 coupe OM603 powered

X2 on the bad thermostat... Easy fix. Don't overtorque the bolts. Don't ask me how I know...

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[/SIGPIC]~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"
[SIGPIC]




1983 Toyota Tercel (Tommy, The little Toyota that could)
1965 Ford F100 (Grandma Ford)
2005 Toyota Sienna (Elsa, Wife's ride)


Gone:
1988 Toyota Pickup
2004 Subaru Outback

1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT

70C is VERY HOT, so while it's not the norm, it's plenty hot to get hot air from the engine.
you likely have two problems, one, a thermostat from a motor designed for the tropics... two a non functioning aux water pump, or a bad monovalve...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!