you have a draw on the system or something is grounded out... you might want to pull the schematics for that fuse and start back tracking until you run into the problem... its going to be a pain process... just take your time and pay attention to it... good luck with it...

 

the fuse box in the engine compartment there is a fuse for the engine sensor. i keep blowing it, its a 20amp, even tried a 30amp and still blows. everytime it blows the service engine light comes on and says it has a maf problem. i can't figure this out please help!

 

were can i get the schematics you think, thanks

 

you could by one of those cheap manuals at autozone/pep boys/advanced auto... they will help, but they arent the greatest..

 

Yeah, get a schematic and find out what runs off of the 5 volt reference with the mass air. Could be a mass air flow wire grounding out or another wire of a sensor running off of that 5 volt circuit.