I just got my XJ all buttoned up and running again when I noticed the fuel line was leaking. It sprung a leak right where it clamps to the intake manifold. I was very lucky to find a replacement at my local Pull-A-Part for $9.00.

Took it for a test drive, great, no leaks. But I heard a distinct ticking sound. I thought it was a lifter, but further investigation revealed it was the sensor where the distributor would mount in an older I6 engine. That's definitely where the noise is coming from. I can feel it when I put my hand on it.

The engine seems to be running fine. Is this something I should replace right away? I've owned this Cherokee for only a month and I've done almost nothing but replace parts on it since I got it. If it's not urgent, I'd really like to take a break and just drive it for awhile.

Here's the part I'm talking about:

http://www.oreillyauto.com/site/c/de...osition+sensor

 

Yes, should probably be replaced. You can pull the sensor off and make sure there's no garbage inside the top. (Requires a 5.5 mm socket or ignition module tool) Most likely though the shaft bushings are bad. Could seize and shear teeth off the gear, or worse.

 

Instructions for replacing the OPD and CMP:













Timing marks. Recommend removing the radiator electric fan to view the timing marks. Turn the damper in a clockwise rotation. If you go past the timing mark, back up the damper about 90 degrees and return it in a clockwise rotation. You will need to outline the damper mark, similar to as shown.

 

Thanks, guys. It appears to be like replacing a distributor.

 

Yes.


Before removing the OPD, turn the damper to align the timing marks as shown. Attempt to insert the toothpick as described in the instructions. If the toothpick can be inserted you are at TDC comression #1 cylinder. If it cannot be inserted, you are at #6 cylinder TDC. Rotate the damper 360 degrees and align the timing marks again. Insert the tooth pick. If it goes in, you're at #1. Now you can remove the OPD.


Follow the instructions above to install.

 

Thanks again.

Do you think the part I linked will be OK? Or is this something I should get from the dealer? Strangely, the entire assembly with the sensor is less expensive than the sensor alone.

 

I'm not a fan of Cardone. I've been through three rebuilt Cardone power steering pumps, two rebuilt brake boosters, and now the new Cardone master cylinder is leaking out of the back seals.


Try checking Rockauto.com and see what they offer. I think NAPA carries Cardone rebuilds.


An OEM OPD/CMP will cost you big bucks but if you have the bucks do it.

 

Roger that. I'll see if there's a rebuilt example available from someone other than Cardone.