Gutted cat need to satisfy oxygen sensor.

[fredbmxer4life]

Re: Gutted cat need to satisfy oxygen sensor.

The passenger o2 has been goin off since feb when i rebuilt motor believe its running too rich maybe something wrong with injector it only tripped the ses light when i got on it if i drove decent for over 40 miles the light would go off (i know you cant use sim on upper o2 sensor). Then i noticed an exhaust leak coming from egr hose so i took it off plugged them up for now so now the ses stays on permanently from that. I just wanted to make sure that post cat o2 sensor didnt do more than throw ses light since i gutted the cat. I guess the car running too rich destroyed honeycomb, but i guess better run rich than lean.

[fredbmxer4life]

Re: Gutted cat need to satisfy oxygen sensor.

And i have already bought a new o2 sensor and replaced it because i used an impact to bolt up headers to y-pipe and fogot to remove o2 sensor so i thought it cracked ceramic in sensor but went down road and same problem when i got on it so its motor related.

[Blizzard242]

Re: Gutted cat need to satisfy oxygen sensor.

The passenger o2 has been goin off since feb when i rebuilt motor believe its running too rich maybe something wrong with injector it only tripped the ses light when i got on it if i drove decent for over 40 miles the light would go off. Then i noticed an exhaust leak coming from egr hose so i took it off plugged them up for now so now the ses stays on permanently from that. I just wanted to make sure that post cat o2 sensor didnt do more than throw ses light since i gutted the cat. I guess the car running too rich destroyed honeycomb, but i guess better run rich than lean.

Get it scanned and post up the exact code that it's putting out.

[fredbmxer4life]

Re: Gutted cat need to satisfy oxygen sensor.

So i gutted the cat got exhaust welded back on started same stuff so next guess was muffler. Cut it off goin down road same problem did a little reading up last night and i read up on plug wires and arc'ing. Lord behold i converted to headers so i had to get longer 3.4l 90 degree boots and i had to hold them up from headers so i ziptied together. So i cut zip tie and where the three plugs were touching the wire skin was hazy. Reran wires and not one problem out of car today. So those three wires were arc'ing pretty much causing random misfires on the whole side of motor. Lesson learned zip ties and plug wires dont mix... :slap:

Got new egr and waiting on my code reader to come in got one for labtop on ebay so hopefully i can get full diagnostics on codes.

[Blizzard242]

Re: Gutted cat need to satisfy oxygen sensor.

Zip ties are fine.. Just not too tight. Glad you figured out the problem.