Make SURE that it's the correct thermostat.  If your "local parts
place" is a NAPA affiliate, it's the wrong one.  NAPA's catalog is
incorrect and they do not carry one that will fit.  The disk that
extends out on the motor side needs to be 1.22" in dia.  NAPA's is
1.625 in dia.  Physically will not fit. Gasket (on a 1.9) is an
o-ring.  I assume that the 2.1 is similar.

Good luck.  Your diagnosis sounds correct.  Yes, you will need to
bleed the system following the change.  If you haven't yet changed the
coolant this year, now's your chance.  I use Texaco's Dex-cool. It is
phosphate and silicate free as is the Autobahn coolant.  Available in
the automotive section of most department stores. Takes a couple of
gallons typically. I also use distilled water. Just to be on the
'safe' side.

Have fun!

Jim Arnott
WetWesties
Union, OR

Mike Bauermeister wrote:
>
<snip>
> To my amazement my local parts place had one so I grabbed it along with a
> gasket but before I start I thought I'd run this by the list.  Does my
> diagnosis seem correct? How tough is this job? Will I need to bleed and fill
> the system when I'm done?
> should I lay in suppies of expensive dealer-obtained coolant?
> Thanks-Mike