error codes p0171,p0174

[brianjwilson]

I've used autolites in my ranger and older explorer, no problems with those and they are priced well.

 

[2000XPLORERSPORT]

i don't mind changing my bosh irridium plugs to a better one if i'll get better over all performance.but the plugs i got only have 8k-9k miles on them.and the truck runs fine.ever since i put them in it has ran great.even with the stock wires and plugs at 99k-100k the truck ran fine.its just at 100k i wanted to change the plugs and wires.i think i'll leave the plugs i got alone for a little while yet.then i'll decide what plug im going to use next.i know the taylor spiro pro 8mm red wires are ok.but i still got the check engine light coming on every once and a while with the p-0171,p-0174 bank 1 and bank 2 lean codes??? i let the truck run and checked for leaks and felt everywhere i could and i couldn't detect or hear any leaks.maybe my 02 sensors are bad? after all, they all are original 02's with 108,500 miles