300whpej

Ok, well i recently swapped in a b-series into my 95 dx coupe and i used an o2 sensor off of an integra (went bad) and then used the one off of my old d15 which wasnt throwing any codes before. I had to extend the wires about 8-10 inches to reach the plug and i keep throwing code 43. I am going to replace the fuel filter, and do a tune-up this weekend, but i have a few questions about extending the o2 sensor wires...1) is extending the wires about a foot causing me to lose resistance? 2) should i buy the sensor for the motor, or the car? the only difference i can see between the two is price and length of the wires.

sorry for the seemingly dumbass questions, but i dont wanna have to do this again.

Jimster480

are you sure you wired it right? i have my o2 sensor extended and its fine.

300whpej

im about 98% sure. i cut and extended each wire separetely so i didnt get the 2 black wires confused. it didnt throw a code when i had no o2 hooked up, but as soon as i hooked up the o2 that came on the exhaust manifold it threw the code. i just drove about 5miles at 100+ (i know, dumb and dangerous) and no cel popped up. im still going to change it out and go from there.

btw, i used this link to make sure i was doing everything right and used the "honda 1" diagram about 3/4 of the way down

http://www.aa1car.com/library/o2sensor.htm

Jimster480

wait so you had no CEL without the O2? but a CEL with it? that makes no sense at all...

300whpej

correct. im running a p72 with a del sol base map. when the car was first started after doing the swap, with the o2 bung filled with a dummy o2 it didnt throw a cel. i found out that both o2 sensors had been disabled. after i had the ecu set to check the primary o2 sensor with using a sensor from a boosted gsr it didnt throw a code, but was dumping fuel, thats how i figured it was bad. finally i used the sensor from my old d15 which ran fine and never dumped fuel or threw a cel, i get one now. not sure how/why other than its actually bad.

300whpej

o2 sensor replaced, but now i have a bigger problem. i went and bought a fuel filter from autozone, and got the banjo bolt off without much trouble. my problem is the nut that hold the fuel line into the bottom of the filter seems to be extremely stuck or seized. i dont want to break it off because that line goes all the way back to the tank right? anyhow if i spray some pb blaster on it will it cause any damage to the line/tank/filter? im lost at what to do because this car is my only way of transportation.

Jimster480

you can put pb blaster or liquid wrench on it to get it off, no damage will be done.

300whpej

ive been pb blastering it for the past 45 minutes or so and its no budging at all. the nut is definitely seized up, but how do i get it out without breaking the line? the line already looks a tad bent, which i dont think will hurt too much, but now im really afraid of breaking it.

delsolo95

mount the filter back in the bracket so the filter wont move. then loosen the bottom nut.. see if that works.