Running Lean..need a lil help.

Jay92Ty

Jay92Ty

Donating Member
So like the title says.. needs some help. I was driving and was at a light when all of the sudden my Ty stumbled a bit..and went lean. The AFR was at about 17+. For some reason it looks good on idle but once I give it gas it goes all the way to 20.0. So giving it gas it runs and idles like crap! New plugs,cap,rotor,wires,fuel filter, but none helped. Also getting knock when I punch it. Im not to familiar with turbo vehicles and I know these trucks are headaches but I just love these trucks. I guess you can say I'm a rookie:lol: I did a bunch of forum search and I found a lot of good tips. One that was mentioned was that the IAC ( with truck warm) should roughly be in the low 30’s.. and mine is in the mid 40’s (around 47). Could this be my problem? I believe I have Stock injectors that might need cleaning? Im bit lost here. Any help is GREATLY appreciated. Thx in advance
The truck has:
-Volosyty chip
-3bar Map
-Meth Kit
-High Flow Cat
-Walbro 255 fuel pump
-AFPR
-PLX/DM5
-Scanmaster3
-RPM EGR delete
-No A/C

This truck was owned by 92TyLA1 and these were all existing parts.
 
Last edited:
Jay92Ty

Jay92Ty

Donating Member
Re: Running Lean..need a lil help.

pearl91chevy said:
Have you ran a fuel gauge on it yet? Also how much fuel is in the tank?
Click to expand...
I originally had an autometer guage but my sender failed. I now have a guage on the fuel rail and it reads at about #40. Tank is Full
 
Jay92Ty

Jay92Ty

Donating Member
Re: Running Lean..need a lil help.

Which is a bit weird..cause I actually raised it a (from #38) to see if it would richen it and no luck. Its smells rich but reading lean. It was running just fine for the two years that I've owned it. Doesnt make any sense to me :-(
 
Jay92Ty

Jay92Ty

Donating Member
Re: Running Lean..need a lil help.

Then again...I couldnt get it past about 10-12 boost. Lot of knock
 
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