hi,

I have a MK2 Golf 1991 1.6 Driver

A few months ago I poisted a topic here about the heater bypass valve,
and have now bought one

Cos it was fitted as part of a recall there's no mention of it in the
Haynes manual etc.

As far as I can see its just a few jubilee clips that need to be
undone, the old one pulled out and the new one pushed in.  I cannot see
that I will need to replace any seals etc.  Nothing other than the
valve (2 parts , one metal, one plastic with the small rubber hose
already fitted), and a couple of jubilee clips came in the bag.

I have the entire part with some spare clips from GSF.  But what I want
to know is whether the cooling system needs to be drained or not.

As the valve is near the top of the engine, will I still need to drain
the coolant.  I am thinking that there will not be a gush off coolant
when I start undoing anything - is this right.

I have replace the waxstat in the past and I was able to do this
without draining.

With regards to draining, if I need to I guess that wil just involve
undoing the hose at the bottom of the rad?.

Finally I have a golf Gti Mk2 1991 (PB code).  There is no bypass
valve.  Should I do anything about this?  At the moment I have all
sorts of problems with the cooling system on this car (possible rad
leaks and no hot air)

Thanks

Bhupesh