come on that was 230 buck i could of used for say.....well you get the point right.

 

Man that freaken light came back on bankone banktwo lean. Could this be a damn tunning problem I'm thinking of getting a whole different tune from someone else.

 

Did the light come on after the pcm was tuned? If so, contact PCMforLess and I'm sure they'll resolve it for you. If not, the maf could be faulty or there could be a vacuum leak somewhere...how about fuel pressure, has that been checked?

 

fuel pressure has not been checked how do i do that? with out a fuel pressure gauge how would i go about finding a vacuum leak?

 

Unfortunately you need a guage to get an accurate fuel pressure reading...I believe that there's a port on one of the fuel rails that it will connect to. As for checking for vacuum leaks, easiest way is to get some carb or throttle body cleaner and spray around the areas that a vacuum leak may occur (intake manifold, throttle body, vacuum lines, etc.). If the engine idle changes (it will usually raise), then you have located the source of the vacuum leak. Also, check and make sure that the air intake tube is nice and tight and not leaking anywhere.

 

Here's a question would my check engine light be on instantly if i had a vacuum leak every time i turn on my truck. I erased the code this morning before i went to work and when i got out of work and turned the truck back on the light did not come on. Or is that normal and also how can i test to see if my MAF sensor is working properly.