more o2 sensor codes ugh
#1
more o2 sensor codes ugh
I used to always throw 1131 and 1151 codes until i got my tune from bama because of my longtubes, this past week i put my new trans in from hanlon motorsports and my front suspension (switch to upr)...today i threw 0133 and 0153, o2 slow response, i had the battery disconnected for 4 days while doing this work to it, today i unplugged the o2s and cleaned them off and plugged them back in...tonight i threw 0153, what is going on here, no wires are crimped or exposed sensors are less than a year old. the only different thing i have done is put my catted midpipe back on and to remove the trans i had to remove the passenger side header which i install tight, but the 0153 is the drivers side, any input? should i load my tune again?
#3
they are both about 5 months old, for both to throw codes at the same time i highly doubt they are bad and are actually doing their job detecting an actually problem, what causes this to happen?
#8
would having a tune for LT headers and o/r mid cause this to happen when putting a catted mid on?
The exhaust flow is not one homogeneous stream, but rather a series of pulses created by each exhaust event. These pulses have a head, body, and tail; each with different characteristic, with their pressure relative to the outside world being the most significant.
- The head is at a pressure higher than ambient, when it passes the "leak" the gas flows out into the world; but the chemical composition of the gas in the pipe remains unchanged;
- The body is at or close to ambient pressure. When it passes the leak nothing happens as it and the ambient pressure are nearly the same--the chemical make-up of the gas in the pipe remains unchanged;
- The tail is at less than ambient pressure (nearly a complete vacuum), and when it passes by the leak it sucks in ambient air--changing the exhaust gas chemical composition and making it appear "leaner" to the O2 sensor;
This is why the leak makes the PCM believe the mix is lean, a big or close enough leak can cause the sensor response to slow or even appear "stuck".