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Success. The cheap camshaft position sensor I bought on eBay was crap. Picked a new one from Napa and it started right up. What a waste of time and money. Lesson learned. Sent from my Pixel 3 XL using Tapatalk

On the ECU it was a use OEM on eBay. The seller stated it was not refurbished and was working when pulled. Sent from my Pixel 3 XL using Tapatalk

Yeah you are correct and I may be learning a valuable lesson here. They are shipping from USA but are not OEM. Sure the are crap. I guess I should head over to Napa today and buy a good one. As for the imobilizer it does not appear that this Jeep has a factory one and I took a photo just to...

So I have check for 5volts and I have around 5.1 at each sensor. I have replaces the battery with a know good battery. All of the wireing is in factory plastic conduit and did not pull it apart but I checked all the connections for corrosion and gave then a tug at the sensors to see if anything...

Well that makes it easy. Thanks. Sent from my Pixel 3 XL using Tapatalk

Okay so my Bluetooth obd2 died on me but I have a new one now. I changed both the cam shaft and crank shaft sensors and I am still getting the P0340 error. I am getting my self a bit confused though. Which sensor should I be looking for 5volts on? Sent from my Pixel 3 XL using Tapatalk

Okay thanks guys. I have a new camshaft position sensor on its way and should be here mid next week. I will check to make sure the wires are not all jacked us as well, that doesn't cost a dime so that is easy. I think I need to find a local junkyard that I can get spare parts at for this thing...

I feel like I am chasing my tail here.....or maybe making headway. Not sure. I have been able to get rid of the last two fault code by replacing a couple of parts thanks to everyone's help. However now I have a new code. Not sure if fixing the last codes allows the computer to see a new faulty...

Yes on both the ASD and ASD relay fuse Sent from my Pixel 3 XL using Tapatalk

Okay so I cleaned all the grounds and checked fuel pressure at the rail and it is about 45 PSI. I did also get a Bluetooth OBD2 and installed torque. I get the two error codes in the photo. I see one may be the TPS sensor so I cleaned it's ground with no luck. Maybe the sensor? I am not sure...

Ok wow. Lot of info there thank you. I purchased a used OEM PCM from the same year and I do not have an I mobilizer on it as far as I can tell. When I bought it the negative terminal was corodid so I should check the other grounds and the CTS. Thanks again Sent from my Pixel 3 XL using Tapatalk

Well I got the new PCM and CPS installed and cleaned up the pins on the gauge cluster. No more BUS error and the gauge work, but it still does not start. I can hear the pump prime and smell the gas. I pulled the air box off and sprayed some starter spray hoping it would turn over for a few...

I should have checked here first. I am in the Portland area. I picked up a replacement PCM online. Should be here soon. Sent from my Pixel 3 XL using Tapatalk

Pretty sure this started out in the great North East so don't think it would have CA emissions. Time to order some parts. I will update as thing progress. thanks for the help everyone. I hate to see the old girl just sitting like this. Not gonna give up. Sent from my Pixel 3 XL using Tapatalk

Okay thank you. Any idea how to tell if I need an "AD","AF, Or "??" computer without having the original one? I think I am going to pick up a CPS as well. From the forum it sounds like I should keep a spare in the glove compartment. Sent from my Pixel 3 XL using Tapatalk

New to the forum and the world of Jeeps. I recently purchased a 2000 XJ, 4.0, Auto Trans that was missing the ECU/PCM. I purchased a used ECU (P56041 638AD) online and plugged it in. Where the original one is missing I am not sure how to figure out which one I should have in there and this may...