Hi Friends - got a little thing happening. Two nights ago I replaced both downstream o2 sensors (PO used Bosch, I swapped them for NGKs) b/c I was throwing a P0161 code. Took less than 15 minutes and it was humming: No more CEL, running a little smoother, like a brand new 04 Rubicon w/ 180,000 miles.
Today I did the spark plugs (Autolites up and down), and then fired it up. Tick, tick tick...not sure what that constant, rhythmic ticking is, but I assumed it was the fan shroud since it's loose. Shut her down and then did a Sea Foam treatment into the throttle body until it smoked. Shut her down, let her sit, fired her back up...the ticking is back. I took her out for a spin, CEL light on, and now I'm chasing a P0131 code.
I looked through this thread on the dreaded code, but naturally, nothing quite lined up with my personal and unique experience. So, a couple questions:
Today I did the spark plugs (Autolites up and down), and then fired it up. Tick, tick tick...not sure what that constant, rhythmic ticking is, but I assumed it was the fan shroud since it's loose. Shut her down and then did a Sea Foam treatment into the throttle body until it smoked. Shut her down, let her sit, fired her back up...the ticking is back. I took her out for a spin, CEL light on, and now I'm chasing a P0131 code.
I looked through this thread on the dreaded code, but naturally, nothing quite lined up with my personal and unique experience. So, a couple questions:
- this started after the spark plugs, but before the sea foam, so I'm assuming I did something wrong with the spark plugs (it was my first time doing spark plugs) - perhaps my cylinder one spark plug is bad out of the box? Or I need to adjust the gap?
- I'm assuming "cylinder one" refers to the frist spark plug at the front of the jeep - rather than the firing order...is that right?
- As a novice mechanic, I'd like to be able to tackle this on my own, but I also don't want to, I don't know, blow up the Jeep