system reading lean

[rocket455]

ok, for those of you that read my previous thread, all those issuse are taken care of and the car is running perfect. now theres only one more issue. both sides are reading lean. no one i know has an idea as to what is wrong with it or whats causing it. so does anyone have a thought?

 

[revhardSHO]

Codes?

 

[rocket455]

172 and 136

 

[revhardSHO]

172 and 136

KOEO:
172: Oxygen sensor not switching - system is or was lean - Single, Right or Rear HO2S - Fuel control

KOER:
136: Oxygen sensor not switching/system lean Left or Front HO2S - Fuel control

Could be your 02 sensors but then again it might have something to do with the flux capacitor or maybe theres not enough oil in the blinker fluid.

 

[SHOtime2511]

check for vacuum leak(s)
id look for something between the MAF and the TB for starters.

 

[rocket455]

ive already looked everywhere for vacuum leaks, nothing. all the couplers, intake to head, TB, everything.

 

[SHOtime2511]

ive already looked everywhere for vacuum leaks, nothing. all the couplers, intake to head, TB, everything.

have you had the intake manifold off recently?
have you checked all the vac lines/cruise control vac lines?
how old are your o2's?

 

[rocket455]

i have had the intake off recently, how would i check for leaks in the vac lines that are not connectd to the motor, and the o2
s came off of a friends sho that were working. bout a year old

 

[revhardSHO]

i have had the intake off recently, how would i check for leaks in the vac lines that are not connectd to the motor, and the o2
s came off of a friends sho that were working. bout a year old

The intake manifold seals are metal with a plastic/rubberized coating can chip very easily, especially if you've had the intake off. Check and or replace / retorque / reseal as necessary, clear the codes, and see what you get.
Did these 02s get hot like the first ones did?

 

[rocket455]

ok, ill check those seals again, and no these 02s did not get heated like the others.

 

[LOUDSHO92]

Are both exhaust manifolds down tight? Were the gaskets in good condition? How about the connection to the y-pipe? Everything good?

It would be good to get new O2s in.

I am starting to wonder if the ECU is having a hard time keeping up with the 3.2 and Stage 1 cams.

The injectors are not leaking?

How did you assemble the intake? Did you put the horns in? Did you use or 1 gaskets? Check for leaks along the intake?

 

[Bringetto]

i think he only used one gasket... ill be there today to run over this stuff.. thanks everyone