Over the time the exhaust gas recirculation (EGR) system may become plugged with debris, the oxygen sensor may also be getting slow or 'lazy' around this time. When servicing or cleaning the EGR system, it is a good idea to replace the oxygen sensor because it works in tandem with the EGR system.
Replace Oxygen Sensor When Servicing EGR System on Toyota MR2
Average mileage: 145,000 (145,000–145,000)
6 people reported this problem
1 person shared problem details
1993 Toyota MR2145,000Visitor
O2 sensor went bad
Light for engine cooling fan or system comes on but temp gauge is showing normal
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles wh...
not sure what it could be I have replaced the throttle position sensor, EGR vacuum solenoid, pl...
Usually by 150,000 miles the AC system will need some attention, especially in climates where...
At higher mileages, an anti-lock brake system wheel speed sensor may wear out and illuminate th...