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Unread 09-21-2011, 08:46 PM   #61
TJJP77
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1. Year, model, mileage, and build date of your Jeep
'06 Rubicon Unlimited, 12,800 miles...unsure at the moment of the exact build date, but it was in early 2006.
2. Brief description of the problem and any collateral damage. Please include pictures if available.
Checked for issue at 9,300 miles when I bought it, found issue and added about 3,000 miles before addressing the problem. Pictures can be found in the main OPDA thread.
3. Actions taken to fix the problem
Replaced camshaft and OPDA gear
4. Approximate cost of repair
I have about $350 into the repair
5. Did Chrysler pay for or reimburse any of the repairs?
No
6. If Chrysler did pay, what steps were taken to make them pay
N/A
7. Has the problem returned?
No, and hopefully it won't with a new cam.


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Unread 11-20-2011, 11:18 PM   #62
Jp90Talon
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1. 2005 Jeep Wrangler Rubicon Sahara Unlimited 64k miles (51k when OPDA failed) build date 3/2005.
2. OPDA gear shattered causing complete loss of oil pressure. (see pic below)
3. Had to have Jeep towed back to CT from NH then from my home to shop. Paid shop to replace OPDA plus they had to drop oil pan to remove the sections of the gear that broken off. Unsure of any long term internal damage caused by failure and loss of oil pressure. Rental car for two weeks.
4. Total estimate (it happen about a year and a half ago) including parts, labor, and car rental a bit over $1300
5. Even though it happen with only 51k miles on the Jeep I am the 3rd owner and after speaking directly with Chrysler Inc I was informed that "they were not obligated to provide any type of support because my vehicle was not covered under any warranty"
6. Chrysler was not willing to provide any assistance
7. Thankfully no.....but I have only put 12k miles on it since

What the shop pulled out


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Unread 01-04-2012, 12:26 PM   #63
Beefstew
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After spending the past day or two researching this issue it really grinds my gears(no pun intended) that chrysler still has yet to cough up and cover the cost of these repairs. It clearly is a known issue that continues to occur.

I heard for the first time this weekend the laughing monkey from under my hood. Perfect timing considering the warranty ran out last month. This is frustrating knowing that I am most likely going to have to repair this thing. Its cold out, da heck chrysler!!!!

1. Year, model, mileage, and build date of your Jeep
06, tj, 68k, 11/05
2. Brief description of the problem and any collateral damage. Please include pictures if available.
Heard the squealing for the first time... Will address immediately.
3. Actions taken to fix the problem
Contacting jeep and dealership later today!!!
4. Approximate cost of repair
N/A will update
5. Did Chrysler pay for or reimburse any of the repairs?
They dang hell should, but is unlikely they will
6. If Chrysler did pay, what steps were taken to make them pay
N/A will update
7. Has the problem returned?
N/A will update
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Unread 01-04-2012, 01:04 PM   #64
ActionJackson
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Subscribed. Will have to add info later, at work.
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Unread 01-04-2012, 03:07 PM   #65
JPcpa
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These were made by Diamler Chrysler, and it is not Chrysler LLC I believe is the biggest reason "Chrysler" won't pony up any warranty on these. ?
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Unread 01-04-2012, 11:31 PM   #66
hoppy1962
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opda problem linked to LJ's ?

Seems to me there is a large number of LJ's with an opda problem. Any body know why? Perhaps cause it weighs more and the engine has to work harder?
or maybe they sold more LJ's than TJ's during those years?
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Unread 01-05-2012, 12:26 AM   #67
26679cj5
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I have a 2000 wrangler and had to replace the engine due to the problem with the faulty head cracking. I pulled my motor out of an 04 grand cherokee that had 49,000 miles at the time. I'm now up to about 70k on the engine,and on really cold mornings, i get a loud squeeling on start-up which increases with engine rpm's. It goes away after the engine has warmed up for several minutes. I don't know if I can describe the sound as a "laughing monkey" but it's incredibly loud and annoying. Anyone willing to take a wild guess if this is an OPDA issue?
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Unread 01-05-2012, 06:02 AM   #68
flying_bosun
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Quote:
Originally Posted by 26679cj5
I have a 2000 wrangler and had to replace the engine due to the problem with the faulty head cracking. I pulled my motor out of an 04 grand cherokee that had 49,000 miles at the time. I'm now up to about 70k on the engine,and on really cold mornings, i get a loud squeeling on start-up which increases with engine rpm's. It goes away after the engine has warmed up for several minutes. I don't know if I can describe the sound as a "laughing monkey" but it's incredibly loud and annoying. Anyone willing to take a wild guess if this is an OPDA issue?
You can hear the Monkey in the videos on page one here http://www.jeepforum.com/forum/f9/20...ilure-1144202/. It's really quite distinct.
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Unread 01-05-2012, 07:06 AM   #69
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Quote:
Originally Posted by hoppy1962
Seems to me there is a large number of LJ's with an opda problem. Any body know why? Perhaps cause it weighs more and the engine has to work harder?
or maybe they sold more LJ's than TJ's during those years?
Now that's just plain ridiculous. And there are way more TJs than LJs.
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Unread 01-05-2012, 10:25 AM   #70
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Quote:
Originally Posted by flying_bosun View Post
You can hear the Monkey in the videos on page one here http://www.jeepforum.com/forum/f9/20...ilure-1144202/. It's really quite distinct.
ok wow thanks, helpful link. the squeeling im getting doesnt sound like that, good to know its not as severe of a problem.
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Unread 01-05-2012, 11:21 AM   #71
kyleboender
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1. Year, model, mileage, and build date of your Jeep

2005, TJ Unlimited, 60,000 kms.

2. Brief description of the problem and any collateral damage. Please include pictures if available.

Excessive and abnormal wear of the OPDA gear and camshaft gear, eminent failure is certain.

3. Actions taken to fix the problem

Brought it in a few months ago when it was still under 5 year 100,000km warrenty, replaced Cam and OPDA, checked valves, replaced upper gaskets (valve cover, headgasket..etc). Took lots of convincing just to check it, once checked and found damage was replaced with no questions asked.

4. Approximate cost of repair

$0.00

5. Did Chrysler pay for or reimburse any of the repairs?

Fully

6. If Chrysler did pay, what steps were taken to make them pay

None

7. Has the problem returned?

Not yet
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Unread 01-13-2012, 10:43 PM   #72
06choppertj
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A ''Revelation" my son. It is a worm gear !

Quote:
Originally Posted by TheFog View Post
Just because it seems covered in oil doesn't mean its being "properly lubricated".

The first thing you have to consider is this isn't a normal gear with teeth interlocked with another gear in the same axis. The gear configuration is whats know as a "worm gear". Worm gears have higher and more specialized lubrication needs.

With a worm gear the gear on the camshaft isn't really a "gear" its a screw that spins with the camshaft. The gear on the CPS/OPDA sits next to the camshaft and as the camshaft spins the threads of of the cam shaft worm gear the "walk" the teeth of the gear making it turn.



Because of this your not seeing the normal gear tooth on gear tooth force as seen with normal gears. What is actually happening is the face of the threads on the camshaft "screw" are literally grinding against the side of the teeth on the OPDA/CPS gear as it spins.

Now think about how much force its required to spin the oil pump going down the highway. Now consider that load and the pressure its causing the cam shaft worm gear to grind against the teeth of the OPDA/CPS.

This is the cause of the striations that we are all seeing on our OPDA/CPS gears. This type of wear is what ZDDP was designed to counter act, just as it was for the sliding lobe of a cam on a lifter.

The reason engine oils are not causing failures in most modern vehicles is because they eliminated the distributor cap and went to direct coil and there isn't the use of any "worm" gear systems in modern engines.


FOG
You hit it right on the head ! As I have been studying this ongoing post you said what is obvious. This is about normal wear for a worm gear driven assembly.
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Unread 01-14-2012, 12:15 AM   #73
socaldaveh
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Location: Pedro, California
Posts: 335
1. Year, model, mileage, and build date of your Jeep

05, lj, 45000

2. Brief description of the problem and any collateral damage. Please include pictures if available.

Laughing monkey started one morning.


3. Actions taken to fix the problem

Immediately replaced with new opda

4. Approximate cost of repair

$250


5. Did Chrysler pay for or reimburse any of the repairs?

No.

6. If Chrysler did pay, what steps were taken to make them pay
7. Has the problem returned?

No.
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Unread 03-26-2012, 09:56 AM   #74
paulj66
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2005 LJ Wrangler 
 
Join Date: Jan 2012
Location: garland, tx
Posts: 20
1. Year, model, mileage, and build date of your Jeep
2005 LJ, 16,000 miles, build date 01/05

2. Brief description of the problem and any collateral damage. Please include pictures if available.
Laughing monkey noise started in May 2007.

3. Actions taken to fix the problem
Brought it to DC for warranty repair. DC replace the OPDA and the camshaft.

4. Approximate cost of repair
$100.00 deductible under factory warranty. Not sure how much the repair cost DC.

5. Did Chrysler pay for or reimburse any of the repairs?
Yes, they paid all but the $100 deductible.

6. If Chrysler did pay, what steps were taken to make them pay
They paid without any actions on my part.

7. Has the problem returned?
TBD, I'm now at 87K miles and dealing with transmission problems. No laughing monkey, but I will be inspecting the OPDA while it's down.
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Unread 05-12-2012, 12:20 AM   #75
Pound
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2006 LJ Wrangler 
 
Join Date: Dec 2011
Posts: 39
1. Year, model, mileage, and build date of your Jeep
2006, LJ Rubicon, 45k
2. Brief description of the problem and any collateral damage. Please include pictures if available.
Laughing monkey, Typical wear
3. Actions taken to fix the problem
new opda, oil cup mod, mobile 1 turbo diesel oil
4. Approximate cost of repair
$150
5. Did Chrysler pay for or reimburse any of the repairs?
No
6. If Chrysler did pay, what steps were taken to make them pay
N/a
7. Has the problem returned?
Too early to tell
bushing-wear.jpg   upper-bushing-wear.jpg   gear-wear.jpg   tang-wear.jpg  
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