Yes, a failing sensor can sometimes lead to fuel running rich, which might cause a noticeable smell. I had that issue before mine failed completely.
5 Likes
Good to know! Thanks! I’m also getting a bit of black smoke from the exhaust. Could that be linked too?
1 Like
Absolutely, black smoke is often a sign of too much fuel being injected. Check your sensors and maybe clean your MAF too. They can all affect each other!
2 Likes
I tried cleaning the MAF sensor but that didn’t help much. I’m almost considering doing a comedic dance around my truck to get it fixed. Anyone want to join? 
Haha, that might just work! But really, a good diagnostic tool can save you a lot of headache before dancing.
3 Likes
Definitely! I used a scanner to pinpoint issues. Don’t forget to check the wiring to the sensor too; sometimes that’s where the fault lies!
Bank 1 Sensor 1 is located on the driver’s side, upstream of the catalytic converter near the exhaust manifold. Make sure to disconnect the battery before starting the replacement!
Thanks for the clarification! Do I need any special tools for this job?
You’ll likely need an O2 sensor socket and a ratchet. A torque wrench is also a good idea for reinstalling the new sensor to the correct torque specification.
What do you mean by ‘correct torque specification’? Is it usually in the manual?
Yes, it should be noted in your vehicle’s service manual. Typically, it’s around 30 ft-lbs, but always verify for your model year!
That helps! Any common mistakes I should watch out for?
1 Like
One common mistake is to forget about the sensor’s wiring. Double-check connections and ensure they’re secure before starting the engine!
Great tip! Anything else to keep in mind during installation?
Make sure the threads on the new sensor are clean. Applying a bit of anti-seize compound can help prevent future issues and make removal easier next time.
I did this job last summer! Remember to let the engine cool down completely. Otherwise, it’s really easy to get burnt!
Good point, @lisarussell! I can imagine it might feel like a BBQ while you’re working under the hood! Any experiences on how long the process usually takes?
If you’ve done it before, it can take about 30-45 minutes. But if it’s your first time, take your time and make sure not to rush things!
7 Likes