revhardallday

iTrader: (1)

wich way does the thermostat face?

spring facing the car?
OR
spring facing away from the car?

Heisenberg

iTrader: (3)

I'm pretty sure the spring should be facing the car. I really dont remember but usually they will only fit corretly one way.

DaveW

The wax pellet and the spring face the water coming from the engine in order to respond to coolant temperature. If it were backward, I would expect some overheating symptoms, since it couldn't sense the coolant temp until hot water got to the pellet due to leakage or flow past the thermostat, and that would be an unstable situation, similar (but I would expect, worse) to what you described.

revhardallday

iTrader: (1)

Yep Thats The Way I Installed It....thanks For The Info.

jkstill

iTrader: (11)

It helps to know how the thermostat works.

When it opens, it closes off a bypass channel in the motor.

This channel is used to circulate coolant while through the engine while the tstat is closed.

If it were backwards, it could not close the channel, and your motor would overheat.

HTH

supraturbo1987

iTrader: (4)

don't think it will fit any other way

TRISPEEDFD3S

iTrader: (26)

also make sure the air bubble pin is in the up position

M104-AMG

iTrader: (8)

For Reference including "jiggle pin"/air-bubble pin orientation.