Sounds more like a quote to fix the clutch AND the center diff.

Carl

did a clutch on a 94 celica and it was $250 labor plus $200 for the
clutch kit plus new flywheel insert

Hi,

Replacement of the clutch on my '90 a coupla years ago ran just over
$300 for OEM disc, pressure plate, pilot bushing and throwout bearing.

Doing the work myself, it took around 8 hours and change, not having the
proper lifts or anything that would have made the job go easier. I'd
figure the book shouldn't call for more than about 4 hours. Even at the
highest local shop rate I'm aware of, $95/hr, that's suggesting you
should be out of there for around $700-$800.

On the 4wd issue, I believe there's a separate fuse for the 4wd--don't
recall for sure. But if I'm correct, you could pull it and that should
drop you out of 4wd, which would let you know if it's just a switch
problem. On mine, the switch triggers a vacuum control that kicks in the
4wd. You should check the lines, then if there's no electrical problem,
pull a vacuum line and see if it drops back to 2wd. If so, you know the
problem's in that unit. If not, then it's probably internals in the
gearbox and I've got no experience there.

Good luck!

Rick

Clutch alone, figure $600-$800 depending on what parts you need and who
does the work.  For the price they quoted they should be able to throw in a  
good used transmission along with the new clutch.

Before you do anything else check your tires!

Measure the circumference at the center of the tread on all four wheels.  
If there's more than 3/16" variation that may be your problem.  One of the
symptoms of mismatched tires is getting stuck in 4WD.  It will engage all
right but doesn't want to come out.

Later,
Joe