well i tried the 'tune up' while i had my car in 3rd gear.everything was fine for a few minutes AND THEN.....my coolant light came on!
of course my heart stops momentarily and once oxygen comes back to my brain i shift it back into drive.after 5-10 seconds the light goes out and i continue to drive along.after a few miles i decide to try again but only with the same results.i do plan on changing my coolant-it's due-and i guess the t/stat but why would this happen?

__________________
'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)