hi there i had the same problem and know the fix as well as 1001 other fixes for tigras.
the problem is simply a blown fuse which controls the speedometer and engine management light,when you slow down at a junction / roundabout the engine stalls as soon as you dip the clutch.....(very annoying)
so check your fuses in the fuse box and make sure they are all present and good and replace the one thats gone(cant remember which one,,,but it will work guaranteed....hope this helps
steve...............
stephensiddall12@btinternet.com, July 2007