My son's 86 MR2 got a cylinder head shaved for compression leaking into coolant. We put some injector cleaner fluid into tank. One day later after driving the car around, car started running under powered, stalling out in drive or reverse but not in park and automatic trany started shifting hard. What could be the problem?
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
SOURCE: suddenly automatic transmission would not go into reverse
seems like your gear linkage is either broken or come off, if the linkage is ok then u are looking at a replacement gearbox
SOURCE: car stalls after shifting into drive
ya need to have the code pulled,but sounds like a bad throttle position sensor
SOURCE: 1992 Toyota Camry Rough Idle
start by pulling hose off egr valve see if idles smoother almost instantly
SOURCE: 86 s10 wit a turbo 700 trany
It sounds like the front pump had gone bad and you don't have any transmission line pressure from the pump. A long story short, your going to have to get the transmission rebuilt at this point. Good luck and hope this helps, keep me posted.
SOURCE: Head gasket was leaking on my 86 mr2 Replaced the
Check all the wiring connections that you loosened or took off when you removed the head. something is loose or disconnected ,eg., ground wires .
Make sure you have spark at spark plugs whemn cranking ,and fuel pressure.
Did you try spraying starting-fluid in the intake, see if the engine runs for a little bit.
Compression to be anything above 100 psi will firean engine ,sometimes lower too.
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