'96 XJ Code 11, etc. - Help Please! - JeepForum.com
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post #1 of 2 Old 03-10-2016, 10:10 AM Thread Starter
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'96 XJ Code 11, etc. - Help Please!

Hello all,

This is my first time posting to this forum, but this site has been so helpful when diagnosing/fixing issues even without posting.

I have my '96 XJ 4x4, 274,000ish miles. I don't know what was done to it before I bought it 20-30,000 miles ago and I'm trying to fix it up and keep it going as long as I can.

So, here are my current problems:

  1. I keep getting a code 11. I don't have a code reader (checking by turning key 3x) but according to my manual it has to do with the Crankshaft Position Sensor...which I've replaced. I've disconnected the negative terminal on my battery a few times and it's reset the code and my CEL has gone off...only to come back on again after about 10-15 mins of driving. I've tried to associate what is causing the CEL to come back on...and I can't figure it out. The CPS is a duralast...which I've read aren't as reliable as the Mopar ones...but why would it come on after 15 or so minutes? Is that how long it takes for the computer to reboot and check everything? I'm not really experiencing any starting/stalling/idling issues, but I just want the CEL to go off. I've added some dielectric grease as suggested in some forums, but still no luck.

  2. My second issue is what I think is a heat soak issue...but I'm not entirely sure. If I try to start my Jeep after it's been hot (could be after 15 mins or it could be overnight) it will stutter and spit and I hear a knocking sound under the front driver's side floorboard which I can only assume is a backfire? I see a small crack in the exhaust manifold...but I don't know if that would cause it. It's not an everyday occurrence, but it happens enough that it's frustrating and I'd like to fix it before it becomes the norm (as I have read it can, sometimes). I'm not sure what's causing it since I'm not getting any codes for it. It goes away after I "give it some gas" for a minute or two which I realize probably isn't the best thing for it.

Any help would be greatly appreciated. I'm new to auto repair (aside from oil changes, etc.) but I really like this XJ because it's pretty straightforward when you look under the hood...and there are so many resources for fixing them.


Last edited by brittmeister; 03-10-2016 at 10:20 AM. Reason: accuracies
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post #2 of 2 Old 03-15-2016, 09:11 AM
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2004 LJ Wrangler 
Join Date: Jun 2006
Location: Texas Gulf Coast
Posts: 2,336
Over night is not a heat soak issue. napa,o'rielleys,auto zone, will usually pull your codes for free. that might help narrow it down, and remember you can get a new bad part.
PhulesAu is offline  

backfire , cel , crankshaft , stalling , xj

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