p0172

[02gtp40]

hey guys got a 02 gtp light mods cai, port and polish intake a s/c 3.4 pulley and a throttle body spacer car threw a p0172 fuell bank 1 is too rich. i changed the 02 sensor and cleared the code 2 days later it came back. i found a vaccum leak on a three way connector that comes off the intake and fixxxed it code just came bak a month later??? idk what else to do

[Lawngoose]

Spray carb cleaner on that TB spacer... if your idle changes.. you found your vac leak.

Better yet go buy a 30 buck boost gauge and hook it up. That will tell you if you have another vac leak.

[TheOtherNick]

1. put the stock pulley on.
2. Check and see if the FPR is leaking into the vac line and check fuel pressure.

[colindunn]

ive had this same code for about a month now. is it possible it could be the O2 sensor? all i have is a cai right now.

[02gtp40]

the light was on before the pulley swap o2 sensor already changer im gunna spry the spacer tonight and see what happens.. and i really should get a boost gauge too just cant decide what mounting i want yet

[thumbs]

sounds more like a leaky inj.

[colindunn]

would this be caused by a bad lim because i need to replace mine.

[02gtp40]

think i found my culprit i sprayed my maf with cleaner and now it isnt doing it i need to just replace it any one know of a "better" aftermarket one or ill just put in oem

[colindunn]

hmm. i replaced my MAF because of a code that said the voltage for the maf sensor was high or something. i would think if it went bad again i would get the same code. i did get a cheapo from a junk yard.. could be the problem.