My check engine light was on so i plugged up my code reader and this is the code i got.

i looked around a little and found that it could be either the MAF (mass air flow) sensor or a vacuum leak below the MAF.

Only problem is i dont know what the MAF looks like or exactly where it is on my truck.

I drive a 98 1500 v6

Any idea where that sensor is?

 

MAF/MAP sensor is on the front of the throttle body. its pretty expensive to replace, and while i'm sure it does happen, i've never actually heard of one going bad.

its more likely a vacuum leak, and at the risk of wearing out the word "plenum", its a very common problem on these trucks.

 

Are the MAP and the MAF the same thing? Because i replaced my MAP sensor maybe 2 months ago.

Either way you feel like it is more likely a vacuum leak. What is the best way to track down a vacuum leak? Just root around till i find it or is there more of a precise way to narrow my search

 

No, they are not the same thing. Our trucks do not have a MAF (Mass Air Flow) sensor, they don't use that system. MAP (Manifold Absolute Pressure) is the system our trucks use.

Check your fuel pressure, make sure its within spec, and check for vacuum leaks. Usually when people find the fix with this code, in my experience, its a vacuum leak.

 

To find a vacuum leak you can search around to every hose and see if you find it. Another way is to take some carb cleaner and systematically spray down your hoses with the engine running. When the engine hesitates, BINGO you found it.