So i just checked my O2 Sensor with my multimeter, and the voltage bounced from .44 to -.30 back an forth for a minute than stuck on .44 for about 3-4 minutes... Car has serious hesitation sometimes when i just start driving, and it will occasionally throw a Cel 43, Fuel Pressure Supply System or w/e... I've changed dizzy, cap, rotor, plugs, injectors, filter, ect... But haven't changed the O2 sensor, and i'm hearing this could be a culprit upon code 43... While it's in that hesitation mode, if i open the throttle all the way, it will take off like no issues whatsoever, but if im only about half throttle, it bogs really bad...

So first off, is that voltage reading enough to estimate that my O2 sensor is shot, or no..???

And 2nd, if it was the fuel pump wouldnt it throw a different code..?

 

my buddy has the same prob code 43 and all. he is obd 0 what obd are you running with? we tried everything about to change the fuel filter and reset the ecu someone on here told me that should work so that may be your prob and my not be.

 

obd1 92 dx hatch stock d15b7..

 

yea it's in the 02 in my crx it was giving me that code and its a 1 wire 02 and it had a break in it and i look it up on mitchell at my shop and it said to check 02 wiring...hope it helps good luck man

 

ight cool, ima check into it more... thanks a lot bro...

 

so i did a test with my multi meter... started the car with MM in place, an ran -0.32 for about 2 minutes than went to +0.44 and stuck there for about 10 minutes... does that help me find out anything..??

 

i think your o2 is bad try a new one and clear the code and see what happens...but theres no break in the wire anywhere can only be the o2

 

naa no breaks that I can see in the wires, i guess ill just try a new one an hope that fixes my issues... my gas mileage has been suckin real bad latelt, even after tuneup was done like a month ago... ima get an o2, seafoam my ****, an see how she handles after that... thanx again..