VP running crap when hitting 1700-2000rpm

[b3h3m07h]

Hi all, just recently i replaced the O2 sensor in my car but since then its been running like a bitch when going through gears around 1700-2000rpm but only on GAS, petrol no probs but the gas worked fine before. at that rpm range it sound like the engine isant getting enough gas because it feels like it going to stall but if i back off then dump it it runs good. Could it be that the O2 sensor is ready the exaust incorrectly since LPG is running, i herd that O2 sensors dont work properly when running gas, is this true? one last thing code 13 is comming up again what does this mean exactly? cheers

[JD]

is your converter freezing cos if it is it will restrict gas flow.
and i dont think the gas uses the o2 sensors at all, only petrol.

not sure about code 13 ill just go and look it up.

[JD]

code 13 is no o2 signal, could be that the sensor wasnt wired up right?

[b3h3m07h]

i checked all the wiring and it all A OK and found out that the line from the grounding lead on the O2 sensor isant following through to the correct cables on the computer plug D1 D3 D6 and D10. I tested this by unpluging the o2 sensor and using the continuity tester on my multimeter and i didnt get a signal at all from the plug to those points but i do get a circut if i ground one end and probe each point on the plug, is the o2 connector ment to go to those points at all cause it says it does in the workshop manual. Also i check the signal lead VOILET wire and it is working fine so grounding may be the issue. Also i have a telgas 5000 gas computer and it actually taps in to the O2 sensor signal wire so im guessing it may read the o2 levels, what u's all think?