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Old 26-03-2018
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Right of course, the crank sensor... completely forgot sorry. As it is, I'm going to do a big rockauto order next week, so I've just got to put together a list of items I need. I'll do the crank and cam sensor, fuel pressure regulator... Anything else you might suggest? I've already done MAP sensor, IAC and throttle body so those are all good. I'm thinking oil pressure sensor, coolant temp sensor (on the BMW's I run, a bad coolant temp sensor will cause major issues on an engine that's at temp). Just going to have to blitz it I think!

I had a crawl around the engine bay and all of the grounding wires and straps look good and are down solid, but it's possible I missed one somewhere. Is there a good list of what grounds there are and where? Can't hurt to look into that.
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Old 26-03-2018
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As you have replaced most other parts, i think the next on the list is the cam position sensor.
Years ago when mine used to hesitate at the lights, i remember the mechanic told me he fixed it by replacing the cap/rotor, coil and a sensor in the distributor.
My symptoms were similar to yours.....

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Old 26-03-2018
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i dont know about a list of earths but two less obvious ones are.
the earth near the oil dip stick on the block that can get lose / cruddy
and the one near the pcm/computer, which is just a screw into the body work.
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Old 04-05-2018
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Update time! Took a while for the sensors to arrive from Rock Auto, and I had an awful lot to deal with elsewhere in life before I could touch the Jeep, but finally got it done. New cam & crank sensors have sorted it.

I just did about 2 hours of driving yesterday; horse feed, shopping, driving all across town, and not so much as a hiccup - happy as! I can't say whether it was the crank or cam sensor specifically that fixed the issue as I just didn't have time to replace and test them individually, but I had those distributor coil pickup codes after it cut out on me so that's a good indicator at least.

Thank you for all of your help guys, at least now I've got my ignition coil sorted too so that's one less future drama to worry about. It's still doing this rough running on first start (rich smelling, bit of an odd smell actually) but otherwise it's good - was hoping new sensors might have sorted that out but oh well, at least she runs!

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Old 06-05-2018
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good to hear if you got the spare $$$$ replace all the sensors and be done with it
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Old 06-05-2018
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Actually, I THINK I have all of the sensors done now except for two, the oil pressure and coolant temp sensors. Could a coolant temp sensor read fine but cause cold start rough running? I know it can on my BMW - learned that the hard way, also makes it over fuel when hot and struggle to start.

Otherwise, I've already replaced the MAP, throttle position, idle air control and O2 sensors not long ago. I'd like to replace my fuel pressure regulator though as it's original, and I was considering doing a new set of injectors at the same time with one of those slightly uprated regulators. Have I missed any major sensors on these motors?

I'm certainly open to suggestions for items to look at next!
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