Cam Sensor Synchronization on a Jeep 4 0 engine

In this video we go through the steps needed to synchronize the cam position sensor on a Jeep 4.0 engine to the engine timing. This process is the same for Jeep Cherokee XJ's, Wrangler TJ, LJ and YJ's as well as Grand Cherokee WJ's. We make sure the engine is on TDC (Top Dead Center), we pin the cam sensor and then install it.
00:00 - Introduction and Finding Top Dead Center
00:59 - Preparing cam sensor by pining the aperture
04:28 - Preparing the engine
06:26 - Three things to check before installation
06:49 - Installation of cam position sensor
08:34 - Fork and bolt installation and removing the cam pin
10:00 - Engine startup

[@garthmcgibbon4285]

You did a great job demonstrating and describing the operation!

[@theshop392]

Glad it was helpful!

[@Dj-tf7od]

Thank you for this video, helped heaps.

[@theshop392]

Glad it helped, hope your project is getting done soon!

[@iamrico2099]

Excellent video & information

[@theshop392]

Thank you, hope it helps with your project!

[@matthewweese7406]

Very well presented thank you!

[@Ache87]

This is the best video I've seen for the cam sensor syncronization, I like you refer to the Service Manual procedures. Thank you for sharing!

[@theshop392]

Glad it was helpful to you. Yes it's always best to work straight from the Service Manual

[@Ache87]

@@theshop392 How can you tell if a Cam Synchronizer is malfunctioning? Mine makes like a clock ticking sound, is that normal? I greatly appreciate your videos

[@theshop392]

@@Ache87 Mine does not tick. I suggest you open in and look for contact in the window, also check the gear for damage

[@broncoKING24]

Nice video explaining the process in detail. Thanks!!

[@theshop392]

Glad that you found it helpful!

[@israelbrown7622]

Thanks I really need this one! Much appreciated

[@theshop392]

Glad that it was helpful

[@jewsunnahbeach5485]

Thanx so much for this video your natural teacher

[@theshop392]

Glad that it was able to help!

[@chadhewins754]

Excellent video! Thank you.

[@theshop392]

Hope it helps on your project!

[@mr00ks]

Thanks for the refresher. I have performed these steps and wanted to watch your video just to make sure I did the right steps and didn't forget anything. Thanks

[@theshop392]

Glad to hear that you got it working!

[@Pan_Handled]

Thanks mate. Great vid. Appreciate it immensely 🙏

[@theshop392]

Glad it was helpful!

[@donjohnson6256]

Thanks so much for this!

[@theshop392]

Hope it helped with your project!

[@RyanAumiller]

Best one I've seen yet. your first comment about not setting TDC first is the best part! If you also mentioned "rotating this sensor will NOT change ignition timing" it would be absolutely perfect.

[@theshop392]

Thank you. If I understand you correctly, the ignition timing is managed by the ECU, so rotating the sensor will not adjust the timing like an old distributor. However rotating it too far will cause the ECU to throw a code.

[@RyanAumiller]

@@theshop392 sometimes they'll throw a code but usually they just don't run when ya do that. the distributor 4.0s act almost the same except you get ignition breakup at idle or WOT depending on which direction it gets rotated before it completely dies and more often than not, also no codes. but still, They're all crank fired ignition where the ECU/PCM directly pulses the coil for timing control since 1987 and the ONLY way to change baseline ignition timing on these is to physically move the crank sensor in reference to the flywheel. The earliest ones (87-90) had knock controlled spark advance and the ignition system was derived from the Renault Alpine GTA. They were very much ahead of their time.

[@Offroad_Josh]

Great video

[@theshop392]

Thank you

[@noearias2006]

❤THIS VIDEO IS VERY IMPORTANT FOR ME, THANK YOU

[@theshop392]

Hope the video helps you! Make sure to watch this one too so that you are sure you have TDC kzbin.info/www/bejne/b320o2xtqbRsl8k

[@michaelback283]

Thanks for sharing

[@theshop392]

Always our pleasure!

[@DylanFahey]

I had to remove my alternator and bracket to get my finger into #1 spark plug hole. Had my son feel for pressure while I got under the jeep and turned the crank to TDC. Magic. Then, my Cam Sensor oil slot was almost to 12, more around 11:30 position. Found out my 'new' cam sensor was faulty, but worked good enough to get going. My TopDon 600s scanner was able to show me cam sensor degree readout. Every time I got to near '0', it would go straight up to 65,000 on the graph. I just lived with a 1.5 degree setting and was done. I was surprised my scanner did the cam degree thing. Bonus. Very sensitive to get the reading right, but 'graphing' the cam degree readout really helped. Thank you for this video, it gave me the confidence to do it myself instead of dragging the jeep downtown. I also did the Viper Coil mod too. That was a story in itself. Have a great day, thank you.

[@theshop392]

We are glad that the video was helpful. Aligning the oil pump slot is a bit tricky. Unfortunately my scanner is not able to give the degree readout but that is helpful in making sure you have the right teeth.

[@DylanFahey]

@@theshop392 I know we're all on a budget, that's why i got the 600s on sale at amazon. I'm not a salesman for them or amazon. I just needed a cost effective scan tool and that one does a lot of various tests and resets. Again, thanks and you have a great day !

[@WeThePeople-gs7le]

What year jeep do you have? My 01 wj wouldnt work with the topdon 600, or xtool d7 not even a snap on scanner was able to connect to correctly adjust the sync for this repair

[@toddcianciulli921]

Great video. I'm replacing my OPDA using techniques from other videos. Needless to say I did it incorrectly. Your two videos on this have made it extremely clear what I did wrong and how to get it right. Thanks so much for your videos.

[@theshop392]

Glad the videos were helpful, hope you have it running now

[@meinbherpieg4723]

I followed another video last year for this exact procedure only they never commented on the oil pump slot needing to be adjusted so when I slid the sensor down it wasn't perfectly facing the back straight and I couldn't figure out why. I think that's why it started throwing codes again. At least now I think I know what the problem is. Thank you for this video.

[@theshop392]

Thank you for the feedback. The oil pump slot should not affect the sensor facing backwards, it would prevent the sensor from fully seating to the block. If your sensor is fully seated on the block and not facing the right direction it is likely off by one tooth, or start installing the sensor at a different orientation OR your timing is not at TDC and your cam needs to rotate, typically a stretched chain where you miss the timing mark and rotate the crank in the wrong direction, the stretched chain does not rotate the camshaft and your timing is now incorrect. Rather rotate the crank another two full revolutions than turn it the wrong direction.

[@rogu9459]

4:00, I need that ratcheting screwdriver for fathersday wheres it from?

[@theshop392]

It's a torque screwdriver, Amazon has a few different options, Harbour Freight has. Alternatively you could get Snapon or CDI as premium options.

[@stevetakacs849]

What year are you working on?

[@theshop392]

This was a 2000 XJ engine that we had retrofitted into a CJ

[@condor4679123]

You deserve some biltong for this video.

[@theshop392]

Biltong is always welcome!