2005-06 Jeep OPDA_CPS_Distributor Failure - Page 327 - JeepForum.com

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post #4891 of 5452 Old 05-28-2014, 08:41 AM
buddastrat
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Quote:
Originally Posted by bordeauxman View Post
I just had a Dorman installed and I have my old OEM version. Never had the screaming monkeys but I did this as preventative maintenance. My 2006 TJ Rubicon only has around 36K miles. Is it recommended that I could have my OEM unit modified as a replacement in case the I have problems with the Dorman unit? Thank you in advance.

What happened to Big Bob? Just curious.
How did the gears look on the original at that mileage?

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post #4892 of 5452 Old 05-28-2014, 08:43 AM
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Quote:
Originally Posted by buddastrat View Post
Monster thread! I read from time to time but it's been awhile.. I have been lucky with my late '06 Rucicon so far. How long has the Dorman unit been out? Is it proven to be a good fix? I see them on ebay for about $100 now. Wondering if it'd be worth it for the peace of mind. I have read of some guys getting over 100K miles before they had issues.

Has there been any pattern to premature wear being narrowed down to specific period, other than all '05 and '06?
My '06 OPDA started the laughing monkey two years ago, around 70k miles. Had stealership replace the OPDA and CAM under warranty. She's been quiet since, 85k miles now, but I'm on borrowed time until I install upgraded OPDA.

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post #4893 of 5452 Old 05-28-2014, 08:45 AM
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Quote:
Originally Posted by Brad4406 View Post
Well, what I thought was a plug appears to be cast housing. I believe the Taiwan units do not have a grease cavity. I'm thinking of drilling below the upper bushing on the housing, in other words about 3/8" below the hole that I drilled earlier, and drilling all the way through the housing into the shaft area to put the grease fitting there so that it will fill the entire cavity and hopefully some grease can work its way into the upper bushing. Any opinions?
Why do you want to put grease in it? The grease will lube the bushing but also act as a seal preventing engine oil to get to the bronze bushing. I'd rather have the engine oil any day.

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Mods done: Hurst tee handle, cheap hand throttle, Rokmen Merc front bumper, Warn 9.5 TI winch with 3/8" X 100 worth of Viking yellow rope, DPG OME Ultimate with JKS ACOS up front, Kilby Gas Tank Skid, Kilby Steering Box Skid, Jeep Medic Belly Up, Skidrow Engine Skid, Rockcrusher Diff Skid in the rear, Warn Diff cover in front, , AR Outlaw II's and MTR 12:50/15's, Homemade rear Bumper, Cheap Cobra CB, Puma OBA, Sirius Radio, Locker Defeat, Rockhard cage, Rockmen short corners, homemade tire swing/tailgate hinge affair, Airlift air bags on the rear- - - - - - and more to come!
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post #4894 of 5452 Old 05-28-2014, 08:48 AM
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The Dorman unit has been out a while now...and I can't recall hearing about any new problems with the unit. Most guys seem to replace the OEM unit once and not have any further issues.

If I was you I would order the Dorman unit ASAP. My OEM unit wasn't making any noise but I pulled it to check and there was a good amount of wear on the shaft and gear

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http://www.jeep-owner.com/index.php/topic,748.0.html
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post #4895 of 5452 Old 05-28-2014, 08:57 AM
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Quote:
Originally Posted by buddastrat View Post
I have read of some guys getting over 100K miles before they had issues.
I know guy going on 149k miles on OEM OPDA with no issues.

#feelthejohnson
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post #4896 of 5452 Old 05-28-2014, 09:01 AM
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I need to pull my Dorman and check it. I have about 1000 miles on it now. The dorman does get lube to the top bushing in the form of oil vapor. A bronze bushing does not take too much oil to stay alive. You figure the OPDA shaft spins between 1000 and 2000 and spins about 1500 at cruising speed. And has about zero load to boot. As far as the bottom bushing wallowing out, that is totally a alignment issue. The bottom bushing takes the brunt of the force from the oil pump load. The stock units once worn are shot for alignment and getting the SG modded units in proper alignment is impossible as I have found out. You also get more side load on the shaft gear if the gears are worn. The only true method to fix this for good would be to change the cam shaft along with the OPDA and even then you may have a bad engine block casting that does not allow proper gear clearance. I think constant monitoring of this OPDA is in order. I'd have no issue pulling the thing every 5-10K miles and checking it. It's just what needs to happen if you own a newer 4.0 Jeep.

2006 Solar Yellow Rubicon Unlimited
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Mods done: Hurst tee handle, cheap hand throttle, Rokmen Merc front bumper, Warn 9.5 TI winch with 3/8" X 100 worth of Viking yellow rope, DPG OME Ultimate with JKS ACOS up front, Kilby Gas Tank Skid, Kilby Steering Box Skid, Jeep Medic Belly Up, Skidrow Engine Skid, Rockcrusher Diff Skid in the rear, Warn Diff cover in front, , AR Outlaw II's and MTR 12:50/15's, Homemade rear Bumper, Cheap Cobra CB, Puma OBA, Sirius Radio, Locker Defeat, Rockhard cage, Rockmen short corners, homemade tire swing/tailgate hinge affair, Airlift air bags on the rear- - - - - - and more to come!
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post #4897 of 5452 Old 05-28-2014, 09:06 AM
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Quote:
Originally Posted by biffgnar View Post
I know guy going on 149k miles on OEM OPDA with no issues.
Wow!! Would you know what year it is? I wonder when it was made at the factory.
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post #4898 of 5452 Old 05-28-2014, 09:18 AM
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Here's a few not so favorable Dorman reviews. http://www.wranglerforum.com/f282/do...-212910-3.html

One mechanic said a lot of this premature wear is due to it not being torqued down correctly. Forgive me if this has all been discussed. I haven't followed this religiously.
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post #4899 of 5452 Old 05-28-2014, 10:12 AM
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Originally Posted by buddastrat View Post

Wow!! Would you know what year it is? I wonder when it was made at the factory.
2006. No idea on build date.

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post #4900 of 5452 Old 05-28-2014, 01:00 PM
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Quote:
Originally Posted by biffgnar
2006. No idea on build date.
I haven't had an issue with mine either. Knock on wood. I pulled it a year ago and everything looked fine.

Some say a comet will fall from the sky.
Followed by meteor showers and tidal waves.
Followed by faultlines that cannot sit still.
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post #4901 of 5452 Old 05-28-2014, 02:10 PM
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Quote:
Originally Posted by buddastrat View Post
Monster thread! I read from time to time but it's been awhile.. I have been lucky with my late '06 Rucicon so far. How long has the Dorman unit been out? Is it proven to be a good fix? I see them on ebay for about $100 now. Wondering if it'd be worth it for the peace of mind. I have read of some guys getting over 100K miles before they had issues.

Has there been any pattern to premature wear being narrowed down to specific period, other than all '05 and '06?
This problem affects ALL 05/06 models. The major failure is the upper bearing due to lack of lubrication.

A COMPLETELY SEPARATE issue is the cam wear. This can be caused by a bad block or OPDA casting and/or oil issues.

My OPDA went out after 100K and I had no cam wear issues. I ran Mobil 1 Extended Performance which addresses the lack of ZDDP issue which is causing failures to the cam lobes and possibly the cam gear.

Expect your upper bearing in the OPDA to fail at some point. Its going to happen! The cam wear may or may not. Just understand that these are two separate issues...on the same shaft.

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post #4902 of 5452 Old 05-31-2014, 05:24 AM
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I have 10k on my Dorman. The gasket that came with it always leaked, and i just pulled it to replace the gasket with a proper one.

The gear looked just perfect and it spins freely with no play.
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post #4903 of 5452 Old 05-31-2014, 06:38 PM
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So I got the p0016 code the other day and I decided to pull my OPDA to look at it. What do you all think? I have the REV E and I have about 85k miles. After I got the code a couple days ago I ordered the Dorman part just in case from rock auto.
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post #4904 of 5452 Old 05-31-2014, 06:54 PM
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Time to swap it out. That is not a good wear pattern.

'92 Islander
'06 Rubicon
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post #4905 of 5452 Old 05-31-2014, 06:58 PM
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Quote:
Originally Posted by jkp
Time to swap it out. That is not a good wear pattern.
That's what I figured. Just wanted to double with you guys. Good thing I ordered that part.

I just hope I caught it in time to save my cam
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