Replacing Camshaft Position Sensor on 4.0 Jeep WJ Grand Cherokee ( WON'T START )

[@kylepriestley6188]

For those having this problem, another thing to check.......I had the same problem and would not get codes, I had changed mine more than once, both cam and crank sensor........that circuit is connected to a lot of things Cam, Crank, TPS, MAF, Injectors, SKIM, all are on it, what happens often and is hard to diagnose is the loom that runs on that harness between the firewall and the valve cover wears away, there is then a stud on the back that rubs against the harness causing it to arc and can give the same symptom and even codes that those sensors are bad when they are not. Even if you are not having problems I would highly suggest wrapping a new high temp loom around that harness running behind the valve cover and also putting something over the stud to prevent arcing. The problem that I was having that was caused by this was stalling in reverse, especially 4lo, random crank no starts, and running low RPM at idle once warm. So if you are changing sensors, go ahead and check that while you are at it cause it's a fairly common problem that goes undiagnosed and can be hard to chase down.

[@kylepriestley6188]

also if that loom has worn away and is arcing, it can cause your sensors to also fail prematurely, so again, check it, simple fix that will save you a lot of headaches that I went through for months chasing that gremlin.

[@NajarOffroad]

Thanks that’s good to know! I used at matco scanner that checked everything on the Jeep and for me it should the cam shaft sensor wasn’t sending signals to the pcm at times but I’ll still go ahead and check the loom to incase

[@kylepriestley6188]

@@NajarOffroad oh for sure, and to be clear I would say in most cases it probably is just the sensor itself, but might as well check and easy thing that I overlooked multiple times before I figured it out, save the headache that I put myself through. Great video, a lot of the other ones that talk about the cam don’t explain that you don’t have to do the synchronizer most of the time too.

[@bazokazoro4563]

Absolutely agree, I changed all sensors TPS/MAP/ICS ,even TH body, and still there is something unusual Now I doubt in camshaft sensor ! Before remove the ECM 😢

[@rumpelstiltskin2454]

Absolutely!!! Seen this many times when I was working for Jeep dealer and on many of mine and friends Jeeps. Very good tip!!!

[@Kingzgamingandrealtalk]

Well I’ll be darned, I had to change mine too after having the exact same issues. Appreciate your dedication bro!

[@NajarOffroad]

Thanks brotha! How has yours been?

[@Kingzgamingandrealtalk]

@@NajarOffroad Today will be first full day running it. I literally was preparing to change it when the video dropped. I watched your video first, then proceeded with “professional” confidence!🤓 -Jeep stuff!

[@CraigAndrewBruce]

Video was short and sweet. I like videos that have a good ending with something productive.

[@CraigAndrewBruce]

Or with a completed task 👍

[@ATEMOFFROAD]

Cool video, Hate cam shaft sensors luckily your wasn’t to bad to replace, always oem good tips there. I had an 03 Cherokee would just die at the street light, good thing it always started back up 🤣🤣

[@NajarOffroad]

Haha seems common on 4.0

[@codyc820]

Good video man, but also so everybody knows, the camshaft position sensor from Mopar has been discontinued for awhile. I've been trying for awhile to find an OEM one, my 02 WJ only has 45,000 original miles. So what I did was take off the OEM one and replaced it with NAPA brand Echlin and save the original and if the aftermarket fails I have a good low mile OEM one.

[@NajarOffroad]

I didn’t know they were discontinued yea that’s good to save the original!

[@mondomikeg4921]

I read somewhere that NTK made a lot of the OEM parts. Going to change the cam and crank sensors today, wish me luck!

[@codyc820]

@mondomikeg4921 Good luck for sure. I just changed my Crank position sensor to an OEM Mopar one and the camshaft position sensor I changed is an Echlin brand from Napa. And has worked great so far.

[@ixba1993]

Thanks for this video it help me a lot.

[@natewj1077]

Good video guys, I know you said you just wanted to get 'er running, but I highly recommend going back in there and changing them out to OEM Mopar sensors.

[@wayaumememagari4633]

Thanks good work, that is CKP but can you shoo CMP please?

[@kyleb4151]

I've seen in a couple of your sensor videos that you've used the Standard brand. Make sure you get the part that DOESN'T end in "T" - those that end with T are part of their economy line.

[@mathiasrodal2709]

Im new to jeeps and i wonder, does a jeep grand cherokee WJ 3,1 diesel have crankshaft sensor? my jeep cranks alot when its starting, especially when its cold

[@waynemashburn8424]

What brand of scan tool does your friend have. My Jeep has a hard start. I have replaced the Cam shaft sensor, crankshaft sensor, switch over to the viper coil set up, replaced fuel pump and the fuel filter/regulator. I am now at a total loss of what it could be. Any help or ideas on how to fix this. 2000 Jeep Grand Cherokee with the 4.0 in it. Help…

[@NajarOffroad]

It’s a Matco scanner

[@waynemashburn8424]

@@NajarOffroad thanks for the info.

[@overlandingearth8440]

Yeah sorry just replying to this video but seen the other videos on this and yeah just a note for everyone else with this problem my jeep would run all day and night never a problem no signs ever the next morning no start did the 3 clicks it showed me the code and did like you did got the cheap part well a week later same thing this time changed them both the cam sensor and the crank shaft position sensor so far so good like the wire just snapped right by the sensor how ever do not get the cheap parts for these just spend a few bucks and do it right the first time cause no one wants to be stuck for going cheap so remember stay safe and Overland Safely!!!!!!

[@bazokazoro4563]

How to diagnose the faulty sensor before buying new one

[@kajiggaa]

Yo I had my cps go out on me about 6 months ago while doing 75 on the highway and it didn't cut back on for 3 mins. It was super scary. I had put it on too tight at first and it made my jeep run like shit. Just a FYI. I hope it helps someone.

[@racyfreeman317]

Does that Jeep even have a crankshaft sensor?

[@stefanbreit5324]

Yep

[@charlesnickell7257]

I have changed that damm sencer a few times and it's a pain in the ass well mine was

[@NajarOffroad]

Haha wasn’t to bad to remove it luckily I didn’t have to remove the whole unit

[@jesusrperezd]

"duralast won't last" hahahaha

[@rickheselschwerdt5394]

Need to go to Rock Auto and get the Mopar brand that duralast won't last long

[@NajarOffroad]

I don’t think you can find a mopar brand one unfortunately

[@mondomikeg4921]

@@NajarOffroad I hear that NTK parts supposedly made the OEM parts. Bout to find out if they work!

[@canyoncarver]

I am trying this today. Off to O'Reilly later. Wish me luck! The code came up and I was able to limp home, but it was very sketchy... Bt the way, your WJ can give you codes without a scanner, if you turn the ignition switch 3 times (without starting). It will cycle once through whatever code it finds and announce 'done' when it's over.

[@DP-bc3xl]

FYI....See the black window..Those sensors are solar powered. Jeep Cables blocking light....remove hood and you'll be fine...Enjoy the channel..lol DP

[@NajarOffroad]

Good to know! I’ll check it out 💪 appreciate it!

[@DP-bc3xl]

@@NajarOffroad Love the builds! DP

[@rodom303]

My Jeep had the same problem and left me stranded

[@NajarOffroad]

Luckily mine went out at home

[@Javierdos501]

Lmao u guys are fuhs koo info tho I don’t have that problem but it’s gd to know so I won’t get scared n panic lol

[@NajarOffroad]

Yup! This and the crankshaft position sensor should be changed at the same time

[@josesoto1041]

"duralast it wont last" pretty much the same as any Chrysler dodge and jeep

[@NajarOffroad]

😂 Send it