Oil pressure sending unit
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CF Veteran
Joined: Sep 2012
Posts: 1,623
Likes: 13
From: In a large sandbox
Year: 1998
Engine: 4.0
Bought a 97 XJ Country 4x4 for my next project and I want to replace the oil pressure sending unit. It is a 2 pin unit and the XJ has gauges. Does anyone know the correct OEM part # for the 4.0l engine? Everywhere I look seems to list the unit for a diesel engine for this model year. TIA for help.
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CF Veteran
Joined: Sep 2012
Posts: 1,623
Likes: 13
From: In a large sandbox
Year: 1998
Engine: 4.0
Thanks salad. It has the full cluster, the oil pressure gauge is reading "0" psi and the "check gauges light is on. Finding the correct OEM part # for this model year with the 4.0l hasn't been as simple as I believed it would be...
Thread Starter
CF Veteran
Joined: Sep 2012
Posts: 1,623
Likes: 13
From: In a large sandbox
Year: 1998
Engine: 4.0
CF Veteran
Joined: Mar 2009
Posts: 2,750
Likes: 3
From: Visalia, Kalifornia, ussa
Year: 1996
Model: Cherokee
Engine: 4.0
Try leaving the alpha off the number see what you get. diesel might use same sendor. Like said above the only I think there are only 2 versions, Idiot light or gauge.
Seasoned Member
Joined: Apr 2014
Posts: 494
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From: Ohio
Year: 98
Model: Cherokee(XJ)
Engine: 4.0L
My pressure gauge is maxed out but none of my alarm lights are on, Mine's a '96.
I was wondering if the OPSU might just need cleaned off and put back into place, or if they don't do that when dirty and it just needs replaced. My gauge reads off the charts on the high end all the time and doesn't move at all no matter what.
Im not meaning a thread hijack in any way
I was wondering if the OPSU might just need cleaned off and put back into place, or if they don't do that when dirty and it just needs replaced. My gauge reads off the charts on the high end all the time and doesn't move at all no matter what.
Im not meaning a thread hijack in any way
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CF Veteran
Joined: Oct 2013
Posts: 2,097
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From: Tarpon Springs, FL / Denver, CO
Year: '98
Engine: 4.0 I6
The OEM sending units are $60 at my dealership, so I cleaned mine out to see if it made a difference.
Got to your local smokeshop (headshop, whatever you want to call it), and get some of those pipe-cleaners made for cleaning "glassware" (they have metal wire in them to really scrub).
Clean the **** out of the passage behind the sender, and clean the sending unit off -- I used break cleaner to get it as clean as I could.
Although I saw absolutely no change in indicated oil pressure when I cleaned mine. If your gauge is maxed out I would assume it has failed.
Got to your local smokeshop (headshop, whatever you want to call it), and get some of those pipe-cleaners made for cleaning "glassware" (they have metal wire in them to really scrub).
Clean the **** out of the passage behind the sender, and clean the sending unit off -- I used break cleaner to get it as clean as I could.
Although I saw absolutely no change in indicated oil pressure when I cleaned mine. If your gauge is maxed out I would assume it has failed.
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Oil pressure sending unit with full gauge functionality for the 1998 2.5L and 4.0L gas engines is Mopar part number 56031005. The 1998 diesel engine uses 56041506AA.
This is taken directly from my 1998 XJ Parts Book and confirmed at Rock Auto and www.factorychryslerparts.com.
56031003AB I find listed for the 1996 diesel engine.
This is taken directly from my 1998 XJ Parts Book and confirmed at Rock Auto and www.factorychryslerparts.com.
56031003AB I find listed for the 1996 diesel engine.
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CF Veteran
Joined: Sep 2012
Posts: 1,623
Likes: 13
From: In a large sandbox
Year: 1998
Engine: 4.0
Just in case anyone else gets confused when trying to replace the oil pressure sending unit for this MY with the 4.0l, 93gc40 is correct. The chryco p/n is 56031003AB.
CF Veteran
Joined: Aug 2010
Posts: 8,357
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From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
Oil pressure sending unit with full gauge functionality for the 1998 2.5L and 4.0L gas engines is Mopar part number 56031005. The 1998 diesel engine uses 56041506AA.
This is taken directly from my 1998 XJ Parts Book and confirmed at Rock Auto and www.factorychryslerparts.com.
56031003AB I find listed for the 1996 diesel engine.
This is taken directly from my 1998 XJ Parts Book and confirmed at Rock Auto and www.factorychryslerparts.com.
56031003AB I find listed for the 1996 diesel engine.
He has a '97.
Part numbers as follows:
'97 = 56031003
'98 = 56031005
'99 and beyond = 5602807(AA)
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
Go to Rockauto.com and do a part number search for 56031003 and will show you two brands to can buy/look for at you local parts store.
http://www.rockauto.com/catalog/raframecatalog.php?ck[ID]=0&ck[idlist]=0&ck[viewcurrency]=USD&ck[PHP_SESSION_ID]=klh40cqfppbuqhul234l6kgfl0
http://www.rockauto.com/catalog/raframecatalog.php?ck[ID]=0&ck[idlist]=0&ck[viewcurrency]=USD&ck[PHP_SESSION_ID]=klh40cqfppbuqhul234l6kgfl0
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
Did a search on wholesalemopar.com for 56031003 and it shows a new part number of 56031003AB. Looks like the only change is "AB".
92gc40 and 4WD4EVER are spot on.
http://www.wholesalemopar.com/parts_...FRJBDQod4Dr6oA
92gc40 and 4WD4EVER are spot on.
http://www.wholesalemopar.com/parts_...FRJBDQod4Dr6oA
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
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