Snoshado's FXT Journal

Snoshado said:

Because I fixed everything! Turned out the washers on the top oil feed line for the turbo were shot... which was the first thing I replaced and I still had the problem -_- Then a friend came over and told me to get OEM ones and problem solved!

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Nailed it! I'm glad you got it fixed. Can't say I've ever heard of the spark plug issue. Interesting.

Vacuum at idle should be a larger negative number and your fuel correction is all over the map. Could be the front O2 on its way out and may be why it only does it at idle and not under higher throttle. The front controls light load corrections and could be a good start.

The vacuum/leak can be tested but the o2 can't to my knowledge.

There is one further forward in the header just before the up pipe. I would try to track down a vacuum leak first. It is basically free to check all the hoses and do a smoke test. The front O2 could have fouled from you running rich or just age.

Any luck man?

Agreed, I don't even remotely see the connection between the idling and the cat. I would still put money down on the vacuum leak.

Man two for two! I can be hired as a consultant if you like. Glad you got it sorted and at this point I would strongly consider a remote tune. There are so many reputable shops that do it now. I have a remote tune for the simple fact that the nearest "good" tuner is around six hours away.