While the car is start... I could step on the gas and it runs to redline and fuel. Then 2nd time, it just reach to about 5000 rpm and drops down to around 2000rpm and back up to near 5000rpm and drops again...... I never has this happen to my engine before.
As the check engine keep shows 3 code..... knock sensor, Purge sensor and pressure sensor....
I download the service manual and follow the step to check each sensor and it all shows no problem and work fine.... will it be the problem of the wiring???
Pleaes help for any idea...... Thanks.....
Ben