Actually, the thermostat housing on this engine has been updated as per
the TSB.
> I bought replacement pins and a new plug (the latter was unnecessary)
> from the dealer and that cured my problem.
Are you talking about the thing that plugs into the temp-sending unit or
the plug that is below the housing where the fluid leaks onto? I don't
recall what that switch is called and how much it costs.
> It is standard bosch plug, so
> a good auto parts shop should be able to find replacement pins.
Good
> If you can remove the plug and the fans come on high, then it rules out a
> problem with your ECU, fan relay, or fan motors.
>
If you're talking about the temp seding unit that screws into the
thermostat housing, then yes, when it is unplugged both the fans come
on; this is how I have things at the moment, because when the
temp-sending unit is plugged in, the fans don't activate at all.
Many thanks,
Robert Cullemore
89 405 Mi16