MAF sensor

[roverman]

Has anyone put in their own mass air flow sensor? I had my '99 4.0 checked and I need a new one. Tried cleaning it out, but now my truck hesitates a little starting up from standstill. Will a new one automatically reset the check engine light or will I still need to go in to get this reset?
Thanks

 

[BrettSanDiego]

Whether the check engine light will go off on its own depends on the code (or codes) that is causing the light to be illuminated. I understand that there are "soft" and "hard" codes. With a soft code, the check engine light will turn off after a certain number of drive cycles without the fault being sensed. With a hard code, the check engine light will not go off on its own. I'm not certain which codes are soft or hard.

Brett