P0171 for the 2nd time

[Willhickey]

Please help guys runs rough at idle . Sprayed brake clean around intake and tubing idle didnt raise . Already replaced maf fixed it for a month . Rereplacrd map under warranty but its still stumbling please help .

 

[19963.4lsr5]

That system too lean could be a dirty fuel filter or dying fuel pump.

I'd look there before vacuum leaks.

 

[Willhickey]

i changed the fuel filter and plugs about a month a month ago aftermarket filter though , toyota wanted 48 for a fuel filter.. oem plugs and airfilter. it does seem to take awhile to start but without a way for me to check fuel pressure ( no schrader valve) im hesitant to replace the pump (would only use oem for this) and the worst part is it smells rich and is belching black smoke. weird huh? thanks