little fuel problem

[j0natell0]

alright, so the deal is a fuel problem i believe. Sometimes when driving steadily with my foot on the gas it will lose power like im not stepping on the gas, and u can obviously see the speedometer go down. i take my foot off the gas and press it again and the car jerks like it just got backs its fuel?? Sometimes when it happens i mush the pedal and it will go but then it will still come back and occur. It only happens SOMEtimes. But lately kind of alot. I want to fix this problem before it gets worse. Any suggestions?

Btw its a jdm b20 swap, with two codes, o2 sensor high voltage bank 1, and another o2 sensor bank 1 code.

[Black4DrEK]

check the fuel system.. 'Filter,pump, lines, ect'

[Batlground]

alright, so the deal is a fuel problem i believe. Sometimes when driving steadily with my foot on the gas it will lose power like im not stepping on the gas, and u can obviously see the speedometer go down. i take my foot off the gas and press it again and the car jerks like it just got backs its fuel?? Sometimes when it happens i mush the pedal and it will go but then it will still come back and occur. It only happens SOMEtimes. But lately kind of alot. I want to fix this problem before it gets worse. Any suggestions?

Btw its a jdm b20 swap, with two codes, o2 sensor high voltage bank 1, and another o2 sensor bank 1 code.

If you can throw a fuel pressure gauge on there and watch the fuel pressure when you are driving it will tell you if you have a fuel delivery problem before the injectors. It wont identify a bad injector but its a start.

[Black4DrEK]

^ x2

yea put a fuel pressure guage on it

[schia89]

If it's not the fuel system check your timing it might of jumped timing.

[j0natell0]

If it's not the fuel system check your timing it might of jumped timing.

dont think thats it, because wouldnt it be skipping constantly

[Black4DrEK]

soo did u do what was mentioned??

[schia89]

dont think thats it, because wouldnt it be skipping constantly
yeah, it would sound just like its not getting enough fuel n either shut off or sputter. just start with the small things first n work your way up

[j0natell0]

just noticed it only happens on cold startup. If i start it up when it wasnt running for a while it will happen. But if i turn it off and start it again and let it warm up it wont happen. ???

[yunglaosta]

maybe your dizzy?

[Batlground]

just noticed it only happens on cold startup. If i start it up when it wasnt running for a while it will happen. But if i turn it off and start it again and let it warm up it wont happen. ???

Do you have a way of logging the parameters in your ecu? Is the ecu chipped?

[j0natell0]

no stock p75 ecu

[TheChosenOne]

Have your TPS tested.