CEL shows when opening the throttle

[So Cal 420a DSM]

When i have the throttle open at a certain point, the Check Engine Light
would show. Could this be a throttle sensor issue or the MAF? This is
happening on my gst.

 

[GRAVEDIGGER]

Instead of guessing, it would be best to check to see what code you're getting and then go to that area for further diagnostics.

 

[So Cal 420a DSM]

Instead of guessing, it would be best to check to see what code you're getting and then go to that area for further diagnostics.

I already scanned for codes. The CEL comes on when the throttle is opened at
a certain point.

 

[dsmdeliveryboy]

Maybe your knock sensor is going bad, you need to check voltages since it only shows when you drive.

 

[So Cal 420a DSM]

Maybe your knock sensor is going bad, you need to check voltages since it only shows when you drive.

Ill test it out and see if its good or not.