I have a 2000 f150 5.4 with cng and need to reset my service engine soon light. Please advise.

tonloc

 

take the hot post off of the battery and leave it off for about 3 or 4 minutes and it should reset or either go to advance and get a code reader theyll let you use it for free

 

OK, but it's safer to disconnect the negative battery post...just in case your wrench should slip and accidently contact ground.

 

I always prefer the reader method, that way I don't have to reset the clock and presets on the radio or retrain the tranny to know me.

 

Which code reader do we need?? I was thinking of buying one. It is the OBO II??

 

Yep, it's OBD-II.

 

Wish all readers would take this mans advice, and disconnect the negative post first and on last. Working with the positive post will eventually result in the battery exploding in your eyes or face. Its no harder to remove the negative than the positive but a whole bunch safer.

 

Kattumaram and Good old Bill are right on the money with this. Please always disconnect the Neg side of the battery first.

When you disconnect the Neg side of the battery you have shut off all juice running through the metal parts of the vehicle. If you disconnect the positive you have shut off the hot wiring but the metal parts of the vehicle still have the neg juice running through them.

For good measure disconnect the Neg then disconnect the Pos side. Then you know you're safe and will not have a battery blow up. Had it happen to me one time, I was lucky and I learned.

 

I use an Equus/Innova 3030 OBD2, about 60 bucks....does the job.