1990 Toyota Supra Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Toyota Supra
1990 Toyota Supra Problems
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.
Our technicians tell us that it is important to change the coolant with factory coolant and replace the thermostat every 60,000 miles. This will help to protect the head gasket, otherwise the head gasket can deteriorate and be stressed to the point of failure.valve clearance as the exhaust valves may become too tight. This will lead to valve failures which are expensive to repair.
1990 Toyota Supra Questions
did a complete tune runs good at idle,now right at 2000 rpm's it cuts on and off,you can slow it dowm and it will rev higher but it won;t hold.why does it pulse back and forth ?
i need to replace the airflow meter and the air filter on my 1989 toyota supra-turbo and i need to find out where i can have it done and how much ?
how much does it cost to replace the air flow meter for a 1989 toyota supra turbo? also to replace the brake hose? also to replace the 2 front strut? and the 2 in take booth?