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TJ Wrangler 4" Rough Country Suspension Lift Kits in JEEP Gear Change Packages From ROCKRIDGE 4WD. We Are DIFFIron Cross Customer JK and TJ Wrangler Bumpers now at ROCK

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Unread 12-11-2010, 02:31 PM   #16
pdm66
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cam Synchro

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Unread 12-11-2010, 02:33 PM   #17
theducksguts
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Quote:
Originally Posted by pdm66 View Post
cam Synchro
not on a 95. A cam Synchro basically tells the Jeep's computer what position the cam shaft is at. I think they started using them in 00 when they went to Coil Pack ignition.
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Unread 12-11-2010, 04:09 PM   #18
Sgt.Fuzz
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Originally Posted by theducksguts View Post
A camshaft? I hope so.
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Unread 12-11-2010, 04:28 PM   #19
Jet300
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Quote:
Originally Posted by mafbowhntr View Post
Cam syncro failed last night on my way home causing my motor to lock up.I did not even have time to pull over as soon as the syncro failed it was to late already lost oil pressure.My poor Jeep only had 93,000 on it so now I am gone to see what Chrysler says .
Why would a sensor failing / breaking / snapping, etc. cause the motor to loose oil pressure and lock up? I mean an engine wont lock up immediately upon loss of oil pressure? I can see immediate stalling due to the PCM not geyting its inputs to fire injectors and spark ....

I'm looking to learn here .. the only thing I ever heard of breaking and immediately killing a motor is when a timing belt snaps on an interference type engine ... Even then all it really does it mash up the valves in the head ...

Confused here ...
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Unread 12-11-2010, 05:06 PM   #20
trw
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Quote:
Originally Posted by Jet300 View Post
Why would a sensor failing / breaking / snapping, etc. cause the motor to loose oil pressure and lock up? I mean an engine wont lock up immediately upon loss of oil pressure? I can see immediate stalling due to the PCM not geyting its inputs to fire injectors and spark ....

I'm looking to learn here .. the only thing I ever heard of breaking and immediately killing a motor is when a timing belt snaps on an interference type engine ... Even then all it really does it mash up the valves in the head ...

Confused here ...
A cam synchronizer replaces where once was a distributor, it is driven by the camshaft.

the oil pump is driven off the same shaft that the cam synchronizer uses, which is driven off a gear on the camshaft. The drive gear on the cam synchro is what is prone to failling on late model TJs, not the sensor itself, so when the gear goes, so does the oil pump (and gear on the camshaft as well), boom, bye bye engine.


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Unread 12-11-2010, 07:48 PM   #21
willydigger
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Quote:
Originally Posted by mafbowhntr View Post
I felt the engine miss and it was to late,so I had a freind of mine tow it home looked at this morning shaft was broke on it ,and yes I am thinking of stroker if Chrysler doesn't want to do anything about it
The gear was broke or the shaft was broke? This is a common (too common) problem with 05-06.

http://www.jeepforum.com/forum/f9/ch...d-read-963235/

You are out of warranty with your mileage and there is no "recall" for the OPDA (oil pump drive assembly). The dealer was only marginally helpful with me and I was still under warranty when mine failed. Fortunately for me the OPDA began to squeak like a bad belt. When I pulled it there was binding in the shaft and substantial wear on the gear teeth.

Good luck to you.
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Unread 12-11-2010, 10:18 PM   #22
jkp
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Quote:
Originally Posted by mafbowhntr View Post
Cam syncro failed last night on my way home causing my motor to lock up.I did not even have time to pull over as soon as the syncro failed it was to late already lost oil pressure.My poor Jeep only had 93,000 on it so now I am gone to see what Chrysler says .
Need to file a complaint here:

https://www-odi.nhtsa.dot.gov/ivoq/
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Unread 12-11-2010, 11:48 PM   #23
Jet300
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Quote:
Originally Posted by trw View Post
A cam synchronizer replaces where once was a distributor, it is driven by the camshaft.

the oil pump is driven off the same shaft that the cam synchronizer uses, which is driven off a gear on the camshaft. The drive gear on the cam synchro is what is prone to failling on late model TJs, not the sensor itself, so when the gear goes, so does the oil pump (and gear on the camshaft as well), boom, bye bye engine.


OK cool. THAT makes sense. I appreciate the explanation.
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Unread 12-12-2010, 01:45 AM   #24
LABoarder
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sorry to hear that
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Unread 12-12-2010, 11:43 AM   #25
mafbowhntr
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Originally Posted by Jet300 View Post
OK cool. THAT makes sense. I appreciate the explanation.
that is pretty much what mine looks like sorry I cant upload pics right now
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Unread 12-12-2010, 11:48 AM   #26
mafbowhntr
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Wish my jeep was sitting in a nice warm garage right now where I could work on it,18 degrees is a little bit to could to work on any thing outside
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Unread 12-12-2010, 01:31 PM   #27
willydigger
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Originally Posted by mafbowhntr View Post
Wish my jeep was sitting in a nice warm garage right now where I could work on it,18 degrees is a little bit to could to work on any thing outside
Please take pics of the damaged OPDA. We need some pics of what a failed unit internally looks like.
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Unread 12-18-2010, 02:27 PM   #28
mafbowhntr
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finally uploaded pics of cam snychro
cam-sensor001.jpg   cam-sensor002.jpg  
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Unread 12-18-2010, 02:29 PM   #29
mafbowhntr
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so that pretty much explains why I had catastrophic engine failure
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Unread 12-18-2010, 08:01 PM   #30
Davemac85
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I would use this as a perfect excuse for a 4bt swap ... thats me tho' good luck on the dealership!! hopefully you get everything taken care of
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