Just changed my 4.7 crank position sensor - JeepForum.com
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post #1 of 24 Old 05-11-2019, 03:32 PM Thread Starter
JeppeWJ
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Just changed my 4.7 crank position sensor

Got my brand new cps from the dealer, Mopar part but made in China..

Just changed it today on my JGC 4.7 without raising it.
I just crawled under on some cardboard , it was surprisingly tight under there even if it is a JEEP.
Had to remove the starter and pry out the old cps. I noticed the cps was already changed once before. Didn't notice any damage or anything. My new part ended with AB , the old part ended with AA .. so maybe it will still be an upgrade?

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post #2 of 24 Old 05-11-2019, 06:15 PM
2oldjeeps
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"Mopar part but made in China.." so much for buying oem and not cheap china junk huh??

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00xj,177,000 miles
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post #3 of 24 Old 05-11-2019, 06:34 PM
Uniblurb
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Yep, I ran into the same thing last Fall when I purchased a new Mopar crank sensor as a spare for my 04 4.7 and had "Made in China" on the package.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1


96 4.0 ZJ Laredo, 2004 4.7L WJ Limited, 96 4.0 XJ (son's)


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post #4 of 24 Old 05-12-2019, 05:54 AM Thread Starter
JeppeWJ
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Yeah and it wasn't cheap either, about 100 bucks. Just hope it holds up to Mopar quality standards as it should.
The AB means that it's an updated version from AA right? Anyone know what the difference might be?
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post #5 of 24 Old 05-12-2019, 06:39 AM
LelandGray
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Quote:
Originally Posted by JeppeWJ View Post
Yeah and it wasn't cheap either, about 100 bucks. Just hope it holds up to Mopar quality standards as it should.
The AB means that it's an updated version from AA right? Anyone know what the difference might be?

You spent waaaaaaay to much on that. They're $52 on Amazon.

Edit: I just saw you're in Sweden, are you able to order from Amazon?

I just replaced mine a few weeks ago, but it didn't solve my problem.

2001 WJ Limited w/ QuadraDrive
Bilstein 5125's
jgcparts 2.5"/2" BB
JK take offs & 265/75R17's
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post #6 of 24 Old 05-12-2019, 06:47 AM Thread Starter
JeppeWJ
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LelandGray Yes I could order from Ebay or Amazon .. but the shipping prices were stupid high .. and it would take 1-2 weeks to get here so I went to my local dealer who got it in 2 days.
I will do the cam position sensor next month , did you change yours?
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post #7 of 24 Old 05-12-2019, 06:52 AM
LelandGray
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Well that makes sense.

I replaced the Camshaft position sensor, too. My problem is that it my Jeep still stalls. It'll stall sitting at a stoplight or it'll stall when I am in the middle of making a turn. Luckily I've gotten used to it, but I'm tired of it running like crap. I don't know what else to check.

2001 WJ Limited w/ QuadraDrive
Bilstein 5125's
jgcparts 2.5"/2" BB
JK take offs & 265/75R17's
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post #8 of 24 Old 05-12-2019, 07:25 AM Thread Starter
JeppeWJ
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That's a bummer, did you start a thread about this problem? All I can think of is damaged wires or connectors.. check for codes.
A guy on youtube changed crank position sensor , cam position sensor and IAC on this very vehicle .. maybe the IAC is bad? I will probably change that too since my idle is bad ..
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post #9 of 24 Old 05-12-2019, 07:36 AM
LelandGray
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I've got a few issues I'm still working on.. I just changed all my plugs, they were really bad. But now I'm getting errors about my could on a few cylinders.

I do have a new IAC, I just haven't installed it yet. I also probably should replace my fuel filter.

2001 WJ Limited w/ QuadraDrive
Bilstein 5125's
jgcparts 2.5"/2" BB
JK take offs & 265/75R17's
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post #10 of 24 Old 05-12-2019, 08:13 AM
JGCJeep
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Originally Posted by LelandGray View Post
Well that makes sense.

I replaced the Camshaft position sensor, too. My problem is that it my Jeep still stalls. It'll stall sitting at a stoplight or it'll stall when I am in the middle of making a turn. Luckily I've gotten used to it, but I'm tired of it running like crap. I don't know what else to check.
My Jeep has the 4.0 and would run intermittently. I too changed the crank sensor and checked everything else. The problem wound up being a short between the 5v reference wire and sensor ground. The wires had melted together near the throttle body.
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post #11 of 24 Old 05-12-2019, 11:43 AM
blueseasons
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What do you know about your PCM? When mine went bad, thats exactly what mine did. Stopped randomly and got progressively worse.I could be going 60mph and the engine would just die. Longer intervals between starting again. I got no codes.
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post #12 of 24 Old 05-12-2019, 02:54 PM
csgalle
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What do you know about your PCM? When mine went bad, thats exactly what mine did. Stopped randomly and got progressively worse.I could be going 60mph and the engine would just die. Longer intervals between starting again. I got no codes.
I was gonna suggest this too. I had the same issue on my 98 ZJ 4.0 - I finally figured it out once I had it running in the driveway and I pushed on the wire harnesses going into the PCM and it would buck/stall.
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post #13 of 24 Old 05-12-2019, 03:20 PM
LelandGray
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Originally Posted by blueseasons View Post
What do you know about your PCM? When mine went bad, thats exactly what mine did. Stopped randomly and got progressively worse.I could be going 60mph and the engine would just die. Longer intervals between starting again. I got no codes.
Are you asking me, or JeppeWJ?

If me, I have no idea. How do I look into that?

2001 WJ Limited w/ QuadraDrive
Bilstein 5125's
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JK take offs & 265/75R17's
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post #14 of 24 Old 05-14-2019, 05:20 PM
RICEKILA
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Since it went in so E-Z --- take it out & slather it with Dielectric grease - push it into every crack and seam -- whether you puddle jump or not -- you'll thank me --

I was once a tree house.
I lived in a cake.
But I never saw the way - the orange slayed the rake --
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post #15 of 24 Old 05-14-2019, 06:47 PM
99wjtx
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I had a code-less random stall issue that happened sometimes at low speed/RPM accompanied by the occasional rough idle at stop lights. Most of the time, the Jeep ran like new. I figured the cosmic odds were against me and so I skipped ahead to a PCM replacement and also replaced the easier to access but less-likely-to-be-at-fault camshaft sensor because I hate pulling the WJ starter *that* much. Time passed - no stall. I thought "wow, I guessed right!" but then one day I had another stall and some more rough idling. I then replaced the crank sensor and I haven't had any trouble since.

Yes, that is how NOT to go about troubleshooting and replacement.

You see, I believed, like others, that due to their simplicity and robust construction crankshaft sensors seldom fail ("failures" in reality are usually due to a bad connection, etc.). It only occurred to me after the fact that the sensor may have been compromised somehow by the severe overheat meltdown it suffered in the criminally negligent hands of the previous owner. When I rebuilt the engine, I just used the old sensor. I thought about replacing it at that time but I talked myself out of it. "Nah - surely the sensor is still OK".

1999 WJ Limited 4.7/NV247
2001 WJ Laredo 4.7/NP242
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