need help with ls1

[Guest Removed]

i have a scanner that will read the o2s and a labscope..how bad does it run?

[99ta]

well, hasn't move more than 10 feet for several months. but I don't think its drivable.

[gillbot]

update: change the TPS, nothing. Got my hands on code reader. have pending codes po171 and po174. lean in both banks. is there a way to check the 02's before replacing them since they are so new. have looked for vacum leaks and sprayed starting fliud around to look for leaks. any ideas? would love to find someone with a comp to see what is going on....

 

you have rear o2's still on? If so swap em, if not maybe borrow a set and see if it will run better.

[99ta]

do not have rears. tuned out.

[Guest Removed]

unplug them...

 

 

or did your maf take a shit?

[99ta]

unplug the o2s?

 

the maf is only 6 months old, I will unplug it tomorrow.

[Nitrousbird]

When starting the car from cold, the PCM shouldn't be referencing the O2's until they warm up (ie - car running in open loop) = if it runs rough when you first start it, it shouldn't be the O2 sensors.

[99ta]

its not. run fine when cold. runs bad when warm.....

[Guest Removed]

unplug them and try it. spray eats 02's. but under WOT, the pcm dont even look at the o2's.