Fly,
I didn't notice any fuel mileage gains with the spacer, but the jeep did seem a bit peppier than stock. I guess is the consensus more for the FIPK, or a different setup, that was cheaper. Cost isn't a whole lot to consider here, but I want to make sure the cost doesn't outweigh the benefits.
Norsk62,
The CPS was only $74 from the stealership, which was only about $8-10 higher than the chain stores prices, and its a OEM part, so its failure shouldn't be as high as the chain stores ones are, or are from what I have been reading. My XJ has the total thin disc cam sensor, and if what is on there right now doesn't cut it, then I will have to wait till Friday to get one of those. That is a $35 part, and i guess on that part the chain stores would be ok?? The counter clown(as we call them) at the store I went to said he sells a bunch of the Cam sensors vs the Crank Sensors, which from what I have been reading, both on here and the FSM is that the Crank sensor is far more likely to give me the symptoms that I have right now.
Got the CPS today, gonna get it in when the wife gets back home from grocery shopping. For those who need the Chrysler part # 56027865AB, and if I can get the memory card, or the cord for the camera I will also try and post a pic up of it. I also got the little cardboard spacer that is needed to set the correct backspacing, that is part # 5252229.
Is there a better way one way or the other at replacing the CPS? Easier from the bottom of the Jeep or top?? It doesn't look like it will take long to replace, but some pointers from those that have done it would be helpful here.
The FSM does state that if the CPS is malfunctioning/bad, no spark event will take place. And from what was previously posted by 8Mud, if the CPS has failed, the ASD won't close, and if the ASD won't close, neither will the Fuel Pump relay. So likely my scenario is just the CPS, so once I get that in, I will post up my new findings. I got a new cap, rotor, wires, and plugs so a total tuneup is in order. Thoughts on if I should just totally upgrade the ignition system to the Firepower Kit from Performance Distributors?? Efficiency is the key here, and my last XJ I used factory plugs(Champions), Bosch Wires, and a stock rotor/cap. The tuneup on this shouldn't take an hour, but I don't want to mess with anything else till the CPS is in and we have some kind of spark anyways. Im not a newbie to the XJ by any means, but since this one is a tad different than my last(242 xfer case, and no power windows or locks), I am using what I remember from that one, for this one. As it sits right now, this XJ is on 30.5" tires, and these were the same one on my last XJ.
Next question is exhaust. I have nothing from the Cat back. Since all that also needs to be replaced, a high flow system is in order. While I am covering that, I am also considering replacing the header, and cat, with aftermarket parts when funds become available. Thoughts on gains in both performance and economy here would be awesome. I am slowly building this machine up, and if funds allow, I might find a second one to do some of the same to. This community has been awesome so far, so keep all suggestions and comments coming. Thanks I and I will let you know my findings later this afternoon.
Jeff