strange sound from engine

Hi everyone i have a toyota tacoma prerunner V6 engine and I notice some pinging noise somebody have the same problem. Thanks for the opinions.

 

may be fuel related. try running a higher octane gas and see what happens................or maybe the last time you filled up,the gas was bad. maybe try another station.

 

somebody told me and I did it, i run 91 on it fron chevron, and i did the seafoam and still the same.

 

What is the PWM valve do you know?

 

hmmm..........what year is your truck? may need the ecu to be reflashed or something.

 

never heard of a pwm valve.

 

2001

 

when is the last time the spark plugs were changed?

 

3 weeks ago.

 

damn......i dont know man. maybe someone else with a better solution will chime in soon.

 

O2 sensors bad?