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 Problems

Check Engine Light Due to Restricted EGR System

The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperature sensor it will trigger a Check Engine Light for improper EGR flow. The repair is to clean out the EGR passages and the EGR Temperature sensor. Our technicians tell this repair is pretty straight forward and takes about 1-1.5 hours. It is also wise to verify the EGR system components i.e. the Transducer, EGR Valve and VSV Solenoid at this time.

Engine 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.

AC blowing Warm Air

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.

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1993 Toyota Supra Questions

Automatic 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.

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