Camshaft synchronizer replacement - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 06-14-2007
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Camshaft synchronizer replacement

I have an 01 xlt and a chirping noise just started in the back of the engine. I have done many searches and talked to the dealer. To replace it will cost around 450.00. No check engine light has come on. Has anyone ever changed the position sensor and the chirping gone away or do you have to change the synchronizer? How hard is it to fix it yourself?
Thanks
Go Vols
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  #2  
Old 06-15-2007
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The chirp noise is usually in the Synchronizer which is just the drive from the cam to the CMP sensor. Like a conventional ignition distributor, the CMP/Synchronizer must be correctly timed to the camshaft.

Recently, on eBay, aftermarket Synchonizer assemblies have begun to appear for around $50 shipped. These are presumably Chinese copies and come with the Synchronizer, CMP and timing tool.

These two listings are for the 3.0L but they also sell them for 4.0L OHV. It is important to get the right year because some CMPs are Hall Effect and some are Variable Reluctance and they are not interchangeable.

http://cgi.ebay.com/ebaymotors/96-98...QQcmdZViewItem

http://cgi.ebay.com/ebaymotors/98-06...QQcmdZViewItem
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  #3  
Old 06-15-2007
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A lot of people have done the job themselves. It's pretty straightforward if you have the alignment tool:

http://autorepair.about.com/library/faqs/bl025h.htm

Even if you don't have the tool, the repair is still doable at home:

http://www.asashop.org/autoinc/may2004/techtips.htm
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  #4  
Old 06-15-2007
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Thanks I will check it out.
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Old 01-02-2008
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Thought I would add to this. Marks98xlt sent me a PM alerting me to common and possibly catastrophic synchronizer failures. Thought I would share some search results that may be educational on the issue. Some are how-to's with illustrations.

http://www.taurusclub.com/forum/inde...howtopic=43437

http://www.ford-trucks.com/forums/46...on-sensor.html

TSB #02221 -- ENGINE-GEAR DRIVEN SYNCHRONIZERS-INCORRECT INSTALLATION-CAMSHAFT POSITION SYNCHRONIZER (CMP) INSTALLATION TOOL CORRECT APPLICATION. *MJ (NHTSA ID #10008304, NOVEMBER

http://free-auto-repair-advice.blogs...when-cold.html

http://www.wrenchjockey.com/cgi-bin/...num=1157816056

http://ford.justanswer.com/taurus/bk...st-couple-days

http://www.fordforums.com/showthread.php?t=150712

http://ford.justanswer.com/ranger/to...l-manual-trans

http://www.rangerpowersports.com/for...d.php?t=202414
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  #6  
Old 01-02-2008
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I just had mine replaced a week ago.My mechanic replaced mine.Was $89.00 for the part plus install.$450.00 is crazy.
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Old 01-02-2008
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I had to change the one on body swap(4.0). I ended up buying the tool on ebay for around 20.00 and reused the ols sensor from the old motor. I had pulled mine out before I knew you had to have a special tool to change it. They are very hard to get to and even hard to see with the motor installed but very do-able at home. The top section of the sensor is removed with a 5 or 5.5 mm socket and I think the base is a 10mm. In therory you could take it out and lube it and reinstall it but you might want a new one. If you don't get it set right you will have a check engine light.
John
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Old 01-02-2008
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I'm going to do this as a preventive maintenance measure.
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Old 01-02-2008
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Its a poor design. Oil doesn't flow well enough to it. I have heard of others having problems but I've been lucky(knock on wood)
John
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  #10  
Old 01-02-2008
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It's been a problem across all vehicles using the 3.0 apparently (except the Duratec -- different engine entirely).
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Old 01-02-2008
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I guess I should check mine on the edge's motor before I reinstall it....good idea!
John
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  #12  
Old 01-02-2008
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Mine was just chirping.I think this gives you plenty of warning.My mechanic did say the tab on the sensor shaft will break off.I will always get chrp/ sqeak attention when it happens for now on.
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  #13  
Old 01-03-2008
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Quote:
Originally Posted by BigEdge126
Mine was just chirping.I think this gives you plenty of warning.My mechanic did say the tab on the sensor shaft will break off.I will always get chrp/ sqeak attention when it happens for now on.
Correct, often times the sensor magnet breaks away from the sensor and gets jammed up in the spinning synchro vane. The result is most often a bent or broken vane. Because the vane is integral to the synchro shaft itself, the bottom line is the whole synchro shaft and sensor assembly has to be replaced. The good news is that, because it wasn't the drive gear at the bottom of the synchro shaft that failed, the oil pump drive shaft kept right on spinning, the pump kept pumping, and the oil kept flowing. It's when the drive gear at the bottom of the synchro shaft gets worn or stripped that the REAL problem presents itself.

(Oops, I guess I'm repeating myself. http://www.rangerpowersports.com/for...1&postcount=49)

On the other hand - and this is something to consider regarding preventive meaintenance - I have read through more than just a couple of posts and threads over the years wherein people claimed to have had no warning signs whatsoever (squeaking/chirping noise, CEL, oil gauge fluctuations, etc.) prior to the synchro gear (and oil pump drive) failing on them. And these are folks who I have good reason to believe are being straightforward about how things actually happened.

Last edited by Rockledge; 01-03-2008 at 11:44 AM.
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  #14  
Old 01-03-2008
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Great Idea bringing this thread back up it should be a sticky in the 3.0 section. From what i heard you can hear it chirping on damp days as the 3.0 does this as well sometimes with a belt that needs to be replaced but it could be this as well.

I locked my engine up this memorial day I got on the highway I didnt even hit 60 yet engine started bogging down i saw check guage, check engine and 0 rpms it locked up that quick.

I had a mechanic put a new engine in the truck and a new one in I had some issues with him getting the timing correct with the cps but once it was straightened out it ran great. If you have a higher milage 3.0 I serious reccomend you replace this part I maintained my engine very well and only had a 115k and had no warnings not even the squeal and it locked on me.

Hell this little part cost me $1100 for a new engine and 14k for a new truck which is my daily, I didnt plan on keeping my 98..
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  #15  
Old 07-04-2014
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Sorry to necro this but I as well have a 2001 XLT Ranger and my syncro is chirping when its damp out.
Can someone direct me to where on the engine its located? I thought it was behind the Ignition coil pack, I do see a plug that looks like to should go to the cam sensor, but its not.

https://www.dropbox.com/s/jm8w9lhbhs...2013.38.22.jpg
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  #16  
Old 07-08-2014
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Ironic that this old post pops up a few days ago, as my cam sensor shaft started squealing like a pig at the same time this post was resurected.

Here's all you need to know on location, replacement, and function of the CMP (camshaft position sensor):

Ford Ranger 3.0L Camshaft Position Sensor

Last edited by bucko; 07-09-2014 at 04:38 AM.
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  #17  
Old 07-09-2014
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I replaced mine last yr. I went to NAPA and bought the part and it came with the timing tool. You can do the job yourself if you just pay attention. Shouldn't take you more than 2 hrs. that includes breaks and cussing lol
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  #18  
Old 07-10-2014
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Quote:
Originally Posted by jdbeck38201 View Post
I replaced mine last yr. I went to NAPA and bought the part and it came with the timing tool. You can do the job yourself if you just pay attention. Shouldn't take you more than 2 hrs. that includes breaks and cussing lol
Also be prepared to lay on top of the engine during the removal/install. That thing could not have been placed any further back, or any lower! Even with my step ladder, it was a pain to get at.
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