O2 sensor probs

[BadTy]

Hi Guys

Need help on a customers truck:

First I had problem of varying O2 on WOT. Thread: http://www.syty.net/forums/showthread.php?t=56293

I replaced already follows:FPR, injectors. plugs, wires cap rotor,
Ignition on 20 °

Problem now: Code 44, O2 lean. O2 signs two digt (from 20-80 mV) on idling speed. I replaced already O2 sensor. Checkt wiring from O2 to ECM. If I add my lambdatool it shows O2 is working. Also response time of sensor looks good.
Also if I incrase FP up to 60PSI, O2 signs not more than 2 digts.

Somone can help?

 

[Andreas]

Re: O2 sensor probs

Did you put the right sized injectors on to match the Ultimate?
FP under boost? Hose on FPR correctly attached?
Timing on 20 degrees!?
Are you sure you got a 3bar MAP sensor not a 4 or 5

 

[BadTy]

Re: O2 sensor probs

Did you put the right sized injectors on to match the Ultimate?
FP under boost? Hose on FPR correctly attached?
Timing on 20 degrees!?
Are you sure you got a 3bar MAP sensor not a 4 or 5

Hi Andreas

injector size is stock (Ultimate is made for stock injectors) Hoses are all brand new an on right place. Timing on 20 degrees. MAp I bougt from RPM. I think its the right one. How can I check if its the right one???