1996 XJ se 4x2 4.0 auto throwing code 11

[4.3LXJ]

I am wondering if the distributor is a tooth off

[Hogstop]

I'm gonna check the timing today.

[4.3LXJ]

My understanding is that the ECM will try to correct the timing electronically. Check the position of the rotor against the position of the spark plug wire on the cap. IIRC, you can get that code 11 if the ECM is correcting the timing too much

[Hogstop]

Yea, I'm stumped too..... Haven't checked the timing chain yet....Seems like if it jumped a tooth it wouldn't run though. Gonna check that in a bit...

[Hogstop]

You ARE the man!! Apparently, someone had adjusted the non-adjustable distributor, or this thing jumped time. Didn't have any help to get the #1 piston on tdc, so I just retarded the distributor a bit( thinking valve clatter is usually too much advance) and she smoothed out on the idle and acceleration improved greatly. I cleared the codes and been driving it pretty hard....no codes yet. Only issue now is it's a little hard to start cold, and pops through the intake on hard acceleration when cold. I still need to check that timing chain though....something is still going on. Any thoughts on the popping other than timing chain? As I said ...no codes are setting. Could the ecm need time to regroup after all this?

[4.3LXJ]

Yeah, you better drive it awhile. These ECMs are slow learners. They belong in the remedial class