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Unread 03-13-2013, 06:10 PM   #1741
Jakemcshibby
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1998 TJ Wrangler 
 
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Im not sure if I have the exact same problem, my opda is worn similar to others but my original problem was that the distributor was forced up by the opda and broke the hold down tab. so should I order new camshaft and distributor or could it be something else?

btw its a 98 2.5L

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Unread 03-13-2013, 06:28 PM   #1742
boilerup1998
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Quote:
Originally Posted by Jakemcshibby

Im not sure if I have the exact same problem, my opda is worn similar to others but my original problem was that the distributor was forced up by the opda and broke the hold down tab. so should I order new camshaft and distributor or could it be something else?

btw its a 98 2.5L
Thought the problem was unique to 4.0L (?)
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Unread 03-14-2013, 02:44 PM   #1743
ops5
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Quote:
Originally Posted by boilerup1998 View Post

Thought the problem was unique to 4.0L (?)
Any distributer not properly aligned can cause knife edging and other problems. The 05-06 problem is that plus lack of lubrication on the shaft
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Unread 09-13-2013, 03:41 PM   #1744
Redbeard17
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ODPA question

I've read in here that jeep will pay to replace the necessary. Ok, by any chance would they still pay if my warranty is out????? I doubt it but gotta be sure.
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Unread 05-18-2014, 10:49 PM   #1745
tcmault
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How can you tell when your engine was made?
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2006 AEV Unlimited Rubicon. Silver. 6-speed. 255/85R16. OME ZJ/LJ. Nth TT. Alloy Shafts.
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Unread 05-18-2014, 11:13 PM   #1746
tcmault
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Answering my own question, I found this post. However, I cannot find where he is referring.

"the build date on the door label is going to be later than the build date of the engine, although probably not by much

for example my vehicle build date is 6/2005 but the engine was built 2005 May 26

the engine built date can be seen on the right side of the engine block on the machined surface between #3 and #4 cylinder. the first digit is the year followed by two digits for the month followed by MX which means 4.0 L engine followed by the last two digits meaning the day, eg for mine 505MX26"
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Unread 05-19-2014, 07:15 AM   #1747
wildride89
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I pulled mine for the hell of it the other day and the gear was worn bad and the end of the shaft was worn as well just replace it. I bought a Dorman replacement part from O'Reillys for 132 and some change. I'm sure the cam gear is worn too.
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Unread 06-15-2014, 11:31 AM   #1748
JP101
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I have a 2005 Rubicon, 4.0, 6-Speed. My build date was 9/04. I'm not sure of the problem that I am having. This is what it sounds like, though:

https://www.youtube.com/watch?v=liUZj3fgheA

Also, when I refuel, I'm getting a lot of spit back. Ugh, I only have 52k miles on it. What the hell is going on here!
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Unread 06-15-2014, 11:33 AM   #1749
Pine_Cat
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sub'd
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Unread 06-15-2014, 11:40 AM   #1750
3X4X4
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All owners of the late model TJs, all, IMO, should immediately remove the original OEM part and replace it now with either the Dorman or the new Crown unit.

The misalignment that aggravates the issue is a result of the shaft wearing into the bushings (if you want to call them that) and then offsetting. The basic issue is no lubrication and the shaft seizing, dragging which also accelerates wear.

I just did my 06. The cam shows what I consider normal wear, the OPDA gear was slightly more than normal but the shaft was very hard to rotate, stiff. It would have not been much longer before the bushings that support it egged out and allowed the parts to misalign, offset. A CIL would then follow if not worse.

ALL 05 and 06 TJ need new OPDAs now. You must change them out NOW. That is my opinion based now on several observations and my 30 plus years as a mechanic of various sorts and now looking at this issue. Do it now. You must do this change.

I would get the new Crown part, the Dorman is what I installed.

J
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Unread 06-15-2014, 11:45 AM   #1751
JP101
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I'm awful when it comes to mechanical work. I live in Pittsburgh, and will offer free beer and pizza to whoever can help me.
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Unread 09-09-2014, 07:17 PM   #1752
Mowgli25
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I have a 02 that had a very worn opda and camshaft. How much has it been for you guys that need to replace the camshaft
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Unread 09-09-2014, 08:01 PM   #1753
bbusch
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Quote:
Originally Posted by Mowgli25 View Post
I have a 02 that had a very worn opda and camshaft. How much has it been for you guys that need to replace the camshaft
I spent over $5K rebuilding my 03 4.0 with Hesco parts in Jan 2011. IMO the 4.0 after the 2002 model year is an over regulated (by govt) POS and Chrysler was running on old tooling at that point. Driving the rig down to Big Bear next week for RJ 60's and a GenRight suspension overhaul but my check engine light has come back on and I'm hoping the engine is not going out again (it has started beeping continuously). I can't wait till I can budget in a new V8, hopefully the engine doesn't die on me on my way down while traveling through the Sierras.
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Unread 09-10-2014, 12:33 AM   #1754
Rubi4MyMrs
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Here is a guy who did it himself on his ‘05 & didn’t pull the head or pull the engine. Not for everyone but if you decide to try it yourself it might save a lot of work.

http://www.jeepforum.com/forum/f9/20...l#post11592070
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Unread 09-14-2014, 04:49 PM   #1755
TJJP77
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Quote:
Originally Posted by Rubi4MyMrs View Post
Here is a guy who did it himself on his ‘05 & didn’t pull the head or pull the engine. Not for everyone but if you decide to try it yourself it might save a lot of work.

http://www.jeepforum.com/forum/f9/20...l#post11592070
Thanks for the plug. Jeep is actually an '06, but '05 & '06 are functionally the same when it comes to this issue of course.

Engine is still going strong with no signs of odd wear on any of the camshaft/OPDA related parts for anyone who is interested.
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2006 , 4.0 , camshaft , replacement , tj , warranty , wrangler

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