Toyota mr2 g limited *** import k reg Went to stop ,put clutch in and car wouldnt stop and it stalled When i started engine in neutral and tried to put it in first gear wouldnt go in, but if engine is off gears can be selected. Also when pressing clutch it sounds as if air is escaping

limited info generic answer seem to have a few things wrong ---driving through [puddle] may have or did damage electrical system like alternator which is not charging battery causing stall no start -but will need to test the battery alternator and electrical system ---also operating without oil water could also have gotten into engine and pretty much damage /destroy it need to inspect and check internals of engine

If you put the trans in neutral and depress the clutch pedal it should still start.
The clutch is hydraulic, so there should be something connecting the pedal to the master cyl and the slave cyl to the clutch disk.

have the clutch slave cylinder and master cylinder replaced
indicates air in the system and/ or moisture in the fluid freezing

I FOUND THIS SEVICE TEC ON THIS PROBLEM???

try the EGR valve. replace it or clean it the EGR ports may be clogged as well

Don't worry I'm sure you will get the solution of your problem, just check the link I attached
Toyota MR2 1983 1998 Workshop Service repair manual

the cable for the speedo have broken it is connected from the gear box to the speed meter on the dash board ,the cable must be replaced

I assume the clutch won't release. Put the trans in neutral and start the engine. Let it get warm. MAKE SURE THERE IS ROOM TO DRIVE THE TRUCK, WITH NOTHING IN THE WAY. Stop the engine, put the trans in first, and start the engine. The truck will jump forward when the engine starts. Get it on a clear road, push the clutch pedal in, and hit the gas. It should come loose in one or two tries.

I suggest probably hydrocarbons blocking the throttle system. so get the throttle bodies on your ca cleaned, Pour a bottle of fuel system cleaner into the tank and run it exclusively on Shell V-Power petrol. DD tried this and the car ran a lot better.

This sounds like the idle speed control valve