Today i decided to take off my piping to get it done.
CEL went on.i left the cat on and it hung and started
scraping the ground. Drove home and on my way, my
speedo decides to stop working. then out of no where
my car dies when i hit the brakes at a red light. tried to
push start. had to feather the throttle to keep it alive.
couldnt drive AT ALL. friend came to jump start my car.
drove fine for a bit then it happended again. Drove home
and parked it.

Anyone have anything to say? I think the cat pulled on the
secondary o2 and messed up the harness or somthing.
threw two codes : 20-Electrical load detector
65 Secondary oxygen sensor heater

 

If the secondary o2 sensor got yanked on 1 or more of the wires could have become shorted, which can cause all kinds of electrical problems.

 

if it was shorted. what should i check ? fuses? relays?

 

should check all of it. it wouldnt hurt to try.

 

First find the short and repair it, then replace any blown fuses. Reset the ecu and see if the problems are solved.

Years ago I had a cherokee that had tons of wierd electrical problems. All it turned out to be was 2 shorted wires on the trailor hitch harness. I fixed the wires, replaced 2 fuses that kept blowing, and everything was perfect

 

you're lucky...you know exactly what the problem is. try a different sensor, or follow the wire on the harness it clips to. something had to rip and is shorting out now. sounds like an easy fix, don't forget to replace fuses and reset the ecu each time you test a fix.

 

on an obd2 integra. where does the second sensor go? it runs through a hole of the chassy

 

It goes through a grommet in the floorboard, under the dash behind the center console area

 

i tried looking for it but no luck. theres a brace blocking all the wires.