1999 Chevy Suburban 5.7 4WD 211k miles
Car was running fine then out of no where o2 sensor codes for bank 2 and also random misfire codes
Checked my scanner showed some readings that maybe look bizarre
Short term fuel trim bank 1 -0.8%
Long term fuel trim bank 1 -3.9%
Short term fuel trim bank 2 50.0%
Long term fuel trim bank 2. 25.0%
Looked under car, connector for that bank 2 sensor is half melted so im assuming not all the pins are registering. Could this be the issue with misfiring, is it better to just cut it in half for now till I have time to replace it. Is it better not workimg, then
Looked under
out of no where o2 sensor codes
post the codes per the instructions please
connector for that bank 2 sensor is half melted ... Could this be the issue with misfiring
Obviously yes.
Short term fuel trim bank 2 50.0%
Long term fuel trim bank 2. 25.0%
Look how high the trims are. They should be close to zero.
the sensor is causing the computer to dump as much fuel as it can into bank two. 50% is crazy I didn't even know it could go that high.
is it better to just cut it in half for now till I have time to replace it.
Cut what? Definitely don't damage the truck's wiring harness.
I wouldn't drive it until you fix this. You're going to cause all kinds of engine and exhaust damage with all that raw fuel. Ever seen a muffler explode? You will.
@imperator can I cut the o2 wire and electrical tape each end
maybe but I don't think you'll gain anything. Can you unplug it? Post a photo.
Sorry for not posting codes
The ones I was getting were
P0151
P0152
P0161
P0300
OK now go to obd-codes.com and look up the troubleshooting steps to fix them. If you need help with any of them, post what they mean and where you got stuck.
Not finding a way to share a pic off my phone.
You may have missed the instructions for photos and videos in the topic titled "READ THIS FIRST - Forum Guide", posted conspicuously near the top of the main page.
Do I even need that o2 sensor, could I just delete it.
sure delete it and keep driving on 4 cylinders until the exhaust system turns into glowing molten slag, and the pistons screech to a halt from under-lubrication , snap the rings off, and throw some rods. All the while you'll have reduced power, and the shaking will pulverize the engine mounts and eat through your savings at the gas pump.
A fuel injected engine RELIES on oxygen sensors. They are part of basic operation. They aren't optional.
You need to go to your nearest part store and get a new sensor. The check engine light is probably flashing at you now, saying "engine damage is occurring"
Not finding a way to share a pic off my phone. I was able to unplug it. Other end, from wire harness looks messed up from melting. So I electrical taped that end so the prongs wouldn't touch anything.
I just let the o2 sensor wire hang and electrical taped the other end of the o2 sensor.
Sorry for not posting codes
The ones I was getting were
P0151
P0152
P0161
P0300
Unplugged yesterday, reading now on live data are,
Short term fuel trim bank 1. 0.0%
Long term fuel trim bank 1 1.6%
Short term fuel trim bank 2 0.0%
Long term fuel trim bank 2. 9.4%
Im still over 2 hours from home, just unplugged for now
Do I even need that o2 sensor, could I just delete it.