1993 Toyota Supra Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 Toyota Supra
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1993 Toyota Supra ProblemsEngine Stalling When Warm
At higher mileages (125,000+) the Engine Coolant Temperature Sensor may intermittently stop working, especially when the vehicle is fully warmed up. This can cause the engine to stall unexpectedly.
The AC Expansion Valve may develop a very slow leak or allow too much refrigerant flow which reduces cooling. Our technicians tell us that Toyota makes an updated expansion valve to resolve these problems if and when they occur.
The Throttle Position Sensor can get out of adjustment due to wear in the throttle body or due to carbon build up. This will cause the idle timing to advance more than 30 degrees which will cause very high HC and NOx emissions. Conversely, the Throttle Position Sensors can wear out and not properly advance the timing which causes a lack of power and poor fuel economy.
1993 Toyota Supra QuestionsAutomatic transmission not shifting to 4th gear. (1 answer)
1st 2nd and 3rd gear work fine but once it get to 3rd gear it just stuck there like the car is stuck on overdrive or the manual button. I try the overdrive and manual button but it still does nothing. Yes the manual and overdrive light still work just transmission not shifting.