Hi, welcome to Just Answers,
I'm posting the procedure below to replace the t-stat...typically the thermostat is replaced when the timming belt and waterpump are serviced.
Thermostat, removing and installing Special tools and equipment
Installing Installation is carried out in the reverse order, when doing this note the following:
Installing toothed belt and adjusting timing, refer to Engine - Timing Components - Timing Belt - Service and Repair - Procedures See: Engine\Timing Belt\Service and Repair
The hyperlinks are disabled...if you need any further information, just let me know :)
As I mentioned at the bottom of the post the hyperlinks are disables, this is information from our shop Alldatapro that can be uploaded here but not accessed. If you need further information, on any portion let me know; most of the hyperlinks are basic definitions of the component, and some are procedures for related areas.
Replacing this thermostat is a very detailed job and you shouldn't attempt it if you've never serviced a engine timming belt on an interference motor. If you get this wrong you can damage the valves in the engine heads. Below is the procdure used to get to the timming belt off after the ribbed drive belt. The front bumper is also removed to start, but it's actually not that difficult, only a couple of bolts hold the entire bumper on since it was designed for this purpose.
Ribbed Belt, Removing And InstallingSpecial tools, testers, measuring instruments and auxiliary items needed
RemovingCAUTION!Before removing ribbed belt, mark direction of rotation. Belt damage will result if not reinstalled in proper direction.
Remaining installation is in reverse order of removal.CAUTION!
Toothed Belt, Removing, Installing and Tensioning Special tools and equipment
Note: If the larger are positioned to the outside, the crankshaft must be turned one revolution further.
Note: It must be possible to just turn the camshaft pulleys on the camshaft tapers.
Fit camshaft clamp 3391
The rest of the assembly is basically a reverse of the disassembly sequence.
No problem, let me know if you run into any trouble getting to the t-stat...thanks for the bunus :)