Hi. I was getting a P0101 check engine code ( Mass airflow too low), so I changed the MAF and I'm still getting the same code. Checked for leaks etc..etc.. then noticed that the pushrod to the waste-gate was stuck. After freeing it up somewhat, the maintenance warning was gone for a few days but now it's back again. I haven't checked if it's stuck again, but am I barking up the wrong tree that this is the source of the engine code? Also, who sells a waste-gate replacement and can it be rebuilt?
Thanks.

 

Does anyone know where I can find a replacement waste-gate?