I have a 2001 XJ that has pretty much been completely from top to bottom including an AX-15 conversion. among many things. I've driven it about 2k miles since the build and everything works great EXCEPT once in a while it will lose power, RPM will drop, and eventually stall. You can feel it start doing it and you can attempt to postpone the inevitable by feathering the gas pedal, but it is going to stall. The funny thing is all you need to do is turn the key on and off and its fine again. I've gotten so used to it I can turn the key off and back on while driving and restart it without stopping. Given I have replaced pretty much every sensor in the truck except the cam position sensor I decided to go ahead and replace it.
So, I ordered a new CPS and installed it. However, neither the old or new CPS have this mysterious alignment hole shown in all YouTube videos and the Haynes manual. So, just like when we rebuilt the motor we dropped the CPS while on TDC and visually aligned the lobe and pickup based on what we could see it was on other people's rigs when aligned with the alignment hole. This worked with the old sensor for the last 2k miles... however...
The new sensor wouldn't work at all when dropped that way even though it looks pretty much identical. Funny thing is it did not want to start with the new sensor dropped exactly the same as the old one. It started one time after a long battle of trying to start it, but other than that you could tell it was firing wrong. We ended up putting the OLD sensor back on without adjusting the position of the CPS at all and it runs fine (but probably still stalls out from time to time).
So my first question is anyone ever have an intermittent loss of power like that which is 100% cured by power cycling the XJ without any need to "cool off"?
My second question (and probably most important one) is how the heck do you drop the CPS and align it on a '01 without the alignment hole? I have concerns my CPS is bordering on the wrong alignment and periodically causes these issues.
Thanks for any help!
So, I ordered a new CPS and installed it. However, neither the old or new CPS have this mysterious alignment hole shown in all YouTube videos and the Haynes manual. So, just like when we rebuilt the motor we dropped the CPS while on TDC and visually aligned the lobe and pickup based on what we could see it was on other people's rigs when aligned with the alignment hole. This worked with the old sensor for the last 2k miles... however...
The new sensor wouldn't work at all when dropped that way even though it looks pretty much identical. Funny thing is it did not want to start with the new sensor dropped exactly the same as the old one. It started one time after a long battle of trying to start it, but other than that you could tell it was firing wrong. We ended up putting the OLD sensor back on without adjusting the position of the CPS at all and it runs fine (but probably still stalls out from time to time).
So my first question is anyone ever have an intermittent loss of power like that which is 100% cured by power cycling the XJ without any need to "cool off"?
My second question (and probably most important one) is how the heck do you drop the CPS and align it on a '01 without the alignment hole? I have concerns my CPS is bordering on the wrong alignment and periodically causes these issues.
Thanks for any help!
