Im running too lean?

**dmahlikGT** · 06-13-2011

I got my car scanned at autozone a lil while ago and 2 codes popped up.one was the obvious o2 sensor code cause im catless but the other was i forgot the number but i know it started with 3.The dude said i was running too lean but he suggested that i just use fuel injector cleaner and i should be good.What exactly does this mean? I do notice subtle things such as funny idle sometimes and a slight hesitation when im at least 1/2 throttle sometimes.What can i do to correct my lean situation and any idea what could cause it?

**matt5112** · 06-13-2011

vacuum leak?

Or you ARE running lean because of your mods and no tune.

**Bio248** · 06-13-2011

figure out the code.

**SnowFlake** · 06-13-2011

Originally Posted by Bio248

figure out the code.

Yes.
I've never seen any of these cars run lean due to mods. The stock fueling is RICH. Unless you're maxing out the MAF sensor or injectors you're not going to run lean with bolt ons.

**01gpgt01** · 06-13-2011

vac leak.

**dmahlikGT** · 06-13-2011

Vac leak is what im thinkin cause the other day i got rid of my TB spacer and im thinkin i didnt get the TB to seal correctly with the stock bolts.I have a high pitch whistle sound( sounds like one of those dog whistles that humans can barely hear) when i rev it. I took it to my mechanic and he sprayed my vac lines, egr and tb and when he sprayed an area of tb the noise went down.So im thinkin i gotta take apart my intake/tb and make sure those bolts are in right.