engine light on

[Bill Gaube]

Was wondering if anyone has any ideas why my Check engine light keeps coming on. Weve replaced the mass air sensor but to no avail one interesting thing is I here a slight buzzing sound fron behind the instrument panel when I rev engine to about 2200 rpm and the let off it buzzes lightly for approx. 2 seconds. not sure if this has anything to do with light.



Thanks Bill

 

[2]

You have to get the code read, that is the only way to tell what is wrong with your ST

 

[Bill Gaube]

code states about 20 different things including lean banks on cylinders etc. truck runs fine.

 

[Todd Z]

Bill,

Please get us the exact number code... Auto zone and places like that read them for free....



Could be the vacuum elbow.....



But we cant guess as to what is wrong...



Todd Z