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#4517213 - 09/15/17 04:23 PM Jeep 4.0 OPDA/Camshaft Synchronizer wore out again
Chris142 Offline


Registered: 06/05/03
Posts: 16811
Loc: Deplorable in apple valley, ca
The 05 and 06 4.0 Jeep engines eat the cam gear... My 02 wore out the bushings in this part. This is the 3rd one. They last about 80k. It goes where a distributor would if it had one and is just a shaft that run on bushings just like a Distributor. One end drives the oil pump and the other end is the cam position sensor.

Jeep usually gets whatever 10w30 is cheapest since that's whats recommended by Jeep.

Anybody think a 15w40 would make this part last longer?
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

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#4517218 - 09/15/17 04:31 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
Eddie Offline


Registered: 12/07/03
Posts: 9558
Loc: Florida, Cape Coral
My 2005 GC with the 4.0 had over 160,000 miles when I sold it and never had this part replaced. Who are you getting these replacement parts from? ed
_________________________
CX5 Touring 2.5L :-)

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#4517225 - 09/15/17 04:41 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Eddie]
Chris142 Offline


Registered: 06/05/03
Posts: 16811
Loc: Deplorable in apple valley, ca
Originally Posted By: Eddie
My 2005 GC with the 4.0 had over 160,000 miles when I sold it and never had this part replaced. Who are you getting these replacement parts from? ed
The original one actually started making noise around 60k but I waited till 80K to replace it. I replaced it with a Dorman one. It lasted 87k. Jeep now has 167k. Today I got one from Napa. It looks better made than the Dorman one it replaced. The bushings wear out and the part that spins so the sensor can "see" it starts hitting the inside of the housing.

Makes an awful racket! New one is quiet,
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

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#4517231 - 09/15/17 04:45 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
car51 Offline


Registered: 03/12/15
Posts: 10251
Loc: Southwest PA
Maybe DELO 10w30 might help. Thinking out loud here
_________________________
2009 Toyota Camry LE

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#4517241 - 09/15/17 05:07 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
ruhroh Offline


Registered: 12/11/16
Posts: 110
Loc: NC
236K thus far and never had to replace mine on a 99. It also gets whatever cheap oil's available in 5W30 or 10W30, now 10W40 for the first time for no real reason. Did pull it out once 6-7 years ago due to curiosity as to what it was. Stuck it back in and car wouldn't start. Had to google what it was and then had to TDC the engine. That was a self-inflicted educational experience that cost half a day to fix...

If the new one lasts another 90K, then I'd say the vehicle has had a great run and to just keep replacing the small important parts as they break. TBH, I have been expecting my Jeep to completely, sans engine, fall apart at any moment now.


Edited by ruhroh (09/15/17 05:08 PM)

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#4517245 - 09/15/17 05:14 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: ruhroh]
Chris142 Offline


Registered: 06/05/03
Posts: 16811
Loc: Deplorable in apple valley, ca
Originally Posted By: ruhroh
Did pull it out once 6-7 years ago due to curiosity as to what it was. Stuck it back in and car wouldn't start.
I took a pic of mine with my phone as a reference.
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

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#4517277 - 09/15/17 06:03 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
Tdog02 Offline


Registered: 08/30/14
Posts: 126
Loc: texas
That's a case of the laughing monkeys. Seriously that's what its called. It is an issue with the last version of the 4.0's in the TJ line up. (03-06 with most of the issues being 05-06 models)

You have a problem that requires a certain fix. When I was on the jeep forums I read several detailed write ups on this but never really worried about it in my 02 cause I was busy replacing the cracked head that was common to 01-02 models.

You should be able to find info on it and there were a couple of successful fixes if I remember correctly. Search laughing monkeys.
_________________________
09 Venza 2.7 99k 10w-30
16 F150 2.7TT 35k 10w-30

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#4517408 - 09/15/17 09:05 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I've heard the Jeep 4.0 likes 10W-40.

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#4517516 - 09/15/17 11:48 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
Chris142 Offline


Registered: 06/05/03
Posts: 16811
Loc: Deplorable in apple valley, ca
I have heard of the laughing monkeys. But my 02 isnt part of that. That started with the opda change in 05.
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

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#4517593 - 09/16/17 06:05 AM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
Driz Offline


Registered: 09/23/07
Posts: 259
Loc: northern NY
As far as I'm concerned jeep and junk start with the same letter. I hated them when I was in the army and I always avoided them based on their bad reputation until my wife conned me into getting one on a lease in 96. I won't say they're terrible on the inside and they were good in the snow all through reliability sucked. Then when I want to get turned in we good with the same thing with the 2000 and I lived with that [censored] thing for like 12 years I can't think of too many things that I didn't replace and that stupid [censored] truck and the engine flip the ring at 113,000 never mind all the headaches with the transformation . I changed stuff in that car that I never changed in my life that just plain wore out prematurely fell apart and just went to pieces. Then there was the day the frame cracked in half right after I give it a good going over uneven had a mechanic friend of mine put it up in the list in a look at it just for that sort of thing .
On the other hand I seen guys drive those things right into the ground is nothing wrong with them. I don't know I kind of wonder some people tend to not Want to admit their cars issues. You'll never seen me going there another one. crazy

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#4517723 - 09/16/17 10:21 AM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
Chris142 Offline


Registered: 06/05/03
Posts: 16811
Loc: Deplorable in apple valley, ca
Fortunatly this is a $50 part that takes 3 minutes to change every 80k. I'm just wondering if a thicker,better etc oil may stop the thing from wearing out.
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

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#4518654 - 09/17/17 02:52 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Driz]
jeepman3071 Offline


Registered: 04/15/10
Posts: 4204
Loc: Storrs, Connecticut
Originally Posted By: Driz
As far as I'm concerned jeep and junk start with the same letter. I hated them when I was in the army and I always avoided them based on their bad reputation until my wife conned me into getting one on a lease in 96. I won't say they're terrible on the inside and they were good in the snow all through reliability sucked. Then when I want to get turned in we good with the same thing with the 2000 and I lived with that [censored] thing for like 12 years I can't think of too many things that I didn't replace and that stupid [censored] truck and the engine flip the ring at 113,000 never mind all the headaches with the transformation . I changed stuff in that car that I never changed in my life that just plain wore out prematurely fell apart and just went to pieces. Then there was the day the frame cracked in half right after I give it a good going over uneven had a mechanic friend of mine put it up in the list in a look at it just for that sort of thing .
On the other hand I seen guys drive those things right into the ground is nothing wrong with them. I don't know I kind of wonder some people tend to not Want to admit their cars issues. You'll never seen me going there another one. crazy


I think quality is definitely hit or miss.

My 2000 Cherokee has 175k and has been pretty reliable the 8 years I've owned it. My friend's 2000 with about the same mileage has had a ton of issues. Both were bought used though, so who knows. He also beats on his a little more.
_________________________
2000 Jeep Cherokee 4.0L (179k) - Pennzoil 10w30, Napa Gold 1516, Magnefine trans filter
2009 BMW 328i (32k) - Castrol Edge Euro 0w40, MANN HU816X

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#4518801 - 09/17/17 05:52 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
Haven't had major issues with any of mine...love them. Jeeps work well for me.

The haters are just leaving me more Jeeps to choose from anyway. smile
_________________________
15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

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#4518813 - 09/17/17 06:08 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
Nick1994 Offline


Registered: 02/19/13
Posts: 10097
Loc: Phoenix, AZ
My Jeep thinks it's a VW and always needs attention frown
_________________________
2015 Hyundai Sonata 2.4L 79k PU 5w30 & OEM
2000 Toyota Camry 2.2L 228k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 146k M1 HM 10w40 & Fram Ultra

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#4519009 - 09/17/17 09:39 PM Re: Jeep 4.0 OPDA/Camshaft Synchronizer wore out again [Re: Chris142]
Colt45ws Offline


Registered: 08/15/06
Posts: 9637
Loc: Central Washington
Originally Posted By: Chris142
[quote=Eddie]I replaced it with a Dorman one.

Uh.
There's your problem.
_________________________
-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2

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