Hi Ken,
Yes, I cleared the check engine light after changing the fuel injector ( I clear engine light every time trouble shoot I work)
Step 1 : Check engine light P0136 & P0138
Step 2 : Changed O2 Sensor. Same code again after 60 miles.
Step 3 : Visited Toyota dealer for Diagnosis.
They said to change whole exhaust system as they supply as complete set. The technician said personally that the exhaust is new in my car but the work was not good. He mentioned orally that the diameter of the pipe is not as per OEM. Also to check the welding.
After the work they asked to change OEM Sensors Air/Fuel sensor and Oxygen sensor. And advised to visit some muffle workshops
Step4 : Visited Shop called Affordable muffler, Lakewood, Ohio. They told the O2 sensor is cross thread and have to change new. Then I changed again new sensors. Also they told the exhaust is good and all ok. But they told to check for the engine tuning.
Step5: Got P0136 & P0138. So I have changed Fuel injector.
Step 6: Again Check engine light †Then changed 4 Spark Plug ( the old spark plug is very bad and almost burnt)
Step7 : P0136 and P0137 ---?
Engine : While starting the engine, The noise will be very high and immediately it become normal in one second. And also I have driven 1000 miles during last vacation. The engine is very smooth while driving even at 230,000 miles.
This is the whole history which may help you to suggest.
Friday, January 6th, 2023 AT 1:13 PM
