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-   -   98 V8 crank sensor plug original location (https://www.jeepforum.com/forum/f13/98-v8-crank-sensor-plug-original-location-4380083/)

Zilliver 12-10-2019 05:00 AM

98 V8 crank sensor plug original location
 
Hi guys

Im soon replacing my crank sensor (5.9) - when I removed the old one, the connector plug was hanging around the front O2 sensor location, more in the tranny side.

What is the original location for the crank sensor connector plug?
Somewhere up the tranny?

I would like to get it high as possible.

Timo_90xj 12-10-2019 06:42 AM

It's behind the distributor and oil pressure sender, on top of engine block/ transmission bellhousing.

Zilliver 12-10-2019 07:00 AM

Thank you Timo, so the wire harness is not in the original place for me.

It was there for my 95 5.2, so I was surprised to find it near the O2 sensor.

wingless 12-10-2019 07:05 AM

This image shows that the transmission doesn't have cable / connector mounts near the CPS, only at the transmission / overdrive joint, red in the image.

Another image shows the same for the rear of the engine.

None of my chassis images show a connector mounting location.


https://farm5.staticflickr.com/4324/...e7a16eec_b.jpg

https://live.staticflickr.com/4434/3...307ce88e_c.jpg

https://live.staticflickr.com/4402/3...5ca2a0eb_c.jpg

Timo_90xj 12-10-2019 08:19 AM

Quote:

Originally Posted by Zilliver (Post 40814555)
Thank you Timo, so the wire harness is not in the original place for me.
It was there for my 95 5.2, so I was surprised to find it near the O2 sensor.

Dunno if the earlier models had a different design on the wire harness, but on the '96-'98 5.2 and 5.9 crankshaft- & camshaft position sensor- and oil pressure sender connectors are all located near/ behind the distributor.


Quote:

Originally Posted by wingless (Post 40814559)
This image shows that the transmission doesn't have cable / connector mounts near the CPS, only at the transmission / overdrive joint, red in the image.

Another image shows the same for the rear of the engine.

None of my chassis images show a connector mounting location.

Correct, there are no connector or cable mounts for the CPS, nor are there any for the camshaft position sensor or oil pressure sender.
From the 1998 FSM wiring diagrams- section; bottom right picture:



https://timolampi.kuvat.fi/kuvat/Off...M.jpg?img=full

Mitogt 12-10-2019 10:08 AM

i just replaced my crank position sensor on my 98 5.2, the connector was near the O2 sensor, did not have much space to put hands on connector to plug them together but did it finally get tigt together, seems like it was there from factory

jrcromwell 12-10-2019 10:27 AM

Quote:

Originally Posted by Timo_90xj (Post 40814593)
Dunno if the earlier models had a different design on the wire harness, but on the '96-'98 5.2 and 5.9 crankshaft- & camshaft position sensor- and oil pressure sender connectors are all located near/ behind the distributor.




Correct, there are no connector or cable mounts for the CPS, nor are there any for the camshaft position sensor or oil pressure sender.
From the 1998 FSM wiring diagrams- section; bottom right picture:



https://timolampi.kuvat.fi/kuvat/Off...M.jpg?img=full

That image from the FSM is a fantasy...I have replaced the CPK on 5.2 and 5.9's. The harness connector is crammed between the body and transmission in the area of the upstream 02 sensor. There is absolutely no slack in that harness.

A great aftermarket part could have been a connector extender to move the plug to a reachable location near the CPK. (another fantasy).

Timo_90xj 12-10-2019 10:37 AM

My crankshaft position sensor connector is in the area where that picture shows it should be. It sure is a tight spot to reach, but it is nowhere near the upstream O2- sensor connector on my Jeep.

wingless 12-10-2019 10:43 AM

When I access my CPS, I first remove the exhaust wye pipe, then lower the transfer case / transmission, providing acceptable blind reach one-arm access.

My CPS connector is also not near the O2 sensor.

Curse words are optional, but not required...

Zilliver 12-11-2019 12:47 AM

I used 1/4 ratchet, 3 long extensions, swivel adapter and 13mm socket. Ratchet between the A/C lines. Tool on the right hand and left hand supporting from the passenger side of the collector.
It takes me like 15-20 minutes to get it out :)

Thank you all for the info, I will try to get the connector as high as possible when I have the new Mopar sensor on hand.

jrcromwell 12-11-2019 12:02 PM

1 Attachment(s)
I know that manufactures change things during production runs all the time. Perhaps this is the case with the CKP plug location.

This is the pic from my 98 5.9 the 5.2's I have done from 97 and 98 have been in the same place.

When I rebuilt my transmission and resealed the engine I looked at moving that plug location.

All I can say is that there must have been differences during manufacturing.

Zilliver 12-12-2019 01:22 AM

jrcromwell - good picture, I have it in the same location :smile2: - but I dont like it, its too low for being such an important part of the car.

I will try to locate it higher if possible:smile2:

Zilliver 12-21-2019 03:04 PM

Replace is done.

https://www.upload.ee/thumb/10875290...209-WA0001.jpg


https://www.upload.ee/thumb/10875297...221_165104.jpg
https://www.upload.ee/thumb/10875307...207_112101.jpg

13mm socket or 6mm hex for the bolt. Have seen a lot of different info in the web


The time now is 03:45 PM.

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