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post #16 of 31 Old 12-11-2010, 02:31 PM
pdm66
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1998 TJ Wrangler 
 
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cam Synchro

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post #17 of 31 Old 12-11-2010, 02:33 PM
theducksguts
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1998 XJ Cherokee 
 
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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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post #18 of 31 Old 12-11-2010, 04:09 PM
Sgt.Fuzz
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2001 TJ Wrangler 
 
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Originally Posted by theducksguts View Post
A camshaft? I hope so.

My build:
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post #19 of 31 Old 12-11-2010, 04:28 PM
Jet300
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2012 JK Wrangler 
 
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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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post #20 of 31 Old 12-11-2010, 05:06 PM
trw
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2011 JK Wrangler 
 
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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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2011 Jeep Wrangler JK - 33" BFG KM2s, 2.5" RC BB, ARB bumper, IPF 900XS, Superwinch EPI 9.0, AEV Snorkel
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post #21 of 31 Old 12-11-2010, 07:48 PM
willydigger
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2005 TJ Wrangler 
 
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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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post #22 of 31 Old 12-11-2010, 10:18 PM
jkp
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2006 TJ Wrangler 
 
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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/

'92 Islander
'06 Rubicon
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post #23 of 31 Old 12-11-2010, 11:48 PM
Jet300
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2012 JK Wrangler 
 
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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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post #24 of 31 Old 12-12-2010, 01:45 AM
LABoarder
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sorry to hear that
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post #25 of 31 Old 12-12-2010, 11:43 AM Thread Starter
mafbowhntr
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2005 LJ Wrangler 
 
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Location: CLARKSVILLE TN
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Quote:
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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post #26 of 31 Old 12-12-2010, 11:48 AM Thread Starter
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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post #27 of 31 Old 12-12-2010, 01:31 PM
willydigger
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Quote:
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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post #28 of 31 Old 12-18-2010, 02:27 PM Thread Starter
mafbowhntr
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finally uploaded pics of cam snychro
Attached Thumbnails
cam sensor001.jpg   cam sensor002.jpg  
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post #29 of 31 Old 12-18-2010, 02:29 PM Thread Starter
mafbowhntr
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so that pretty much explains why I had catastrophic engine failure
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post #30 of 31 Old 12-18-2010, 08:01 PM
Davemac85
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2006 TJ Wrangler 
 
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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

06' Wrangler/ Zone 4.25 combo/MML 33x12.50 BFG AT's. w/ Painted canyons/ other stuff
04' Grand Cherokee- Mommy mobile -
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