Oil pressure sky HIGH
#1
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Oil pressure sky HIGH
Hi guys,
I'm getting a crazy high reading from my oil pressure gauge. It's at 3pm basically.
The only thing I did today was change a motor mount and to pull the long bolt I had to move the oil filter unit to the left. I loosened the bolt under the unit and turned the unit to the lefty
My questions are:
How do I check my oil pressure manually?
Do you think I broke the sending unit and that's why I have a high reading?
Jeep is one owner and I've never changed the sending unit since I got it in 1991.
91 xj 4.0
Thanks,
Mike
I'm getting a crazy high reading from my oil pressure gauge. It's at 3pm basically.
The only thing I did today was change a motor mount and to pull the long bolt I had to move the oil filter unit to the left. I loosened the bolt under the unit and turned the unit to the lefty
My questions are:
How do I check my oil pressure manually?
Do you think I broke the sending unit and that's why I have a high reading?
Jeep is one owner and I've never changed the sending unit since I got it in 1991.
91 xj 4.0
Thanks,
Mike
#2
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Join Date: Nov 2012
Location: Harrisburg, Pennsylvania
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Year: 1995
Model: Cherokee
Engine: 4.0L HO
Hi guys,
I'm getting a crazy high reading from my oil pressure gauge. It's at 3pm basically.
The only thing I did today was change a motor mount and to pull the long bolt I had to move the oil filter unit to the left. I loosened the bolt under the unit and turned the unit to the lefty
My questions are:
How do I check my oil pressure manually?
Do you think I broke the sending unit and that's why I have a high reading?
Jeep is one owner and I've never changed the sending unit since I got it in 1991.
91 xj 4.0
Thanks,
Mike
I'm getting a crazy high reading from my oil pressure gauge. It's at 3pm basically.
The only thing I did today was change a motor mount and to pull the long bolt I had to move the oil filter unit to the left. I loosened the bolt under the unit and turned the unit to the lefty
My questions are:
How do I check my oil pressure manually?
Do you think I broke the sending unit and that's why I have a high reading?
Jeep is one owner and I've never changed the sending unit since I got it in 1991.
91 xj 4.0
Thanks,
Mike
To test the oil pressure manually you remove the electrical sender and screw the fitting for the mechanical gauge into the port.
#4
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
You whacked the oil sender somehow.....
#7
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Year: 1999
Model: Cherokee
Engine: 4.0
Yes OEM "Only".
When I change an oil sending unit I always check the oil pressure (hot idle) with a manual gauge. Then I know exactly where on the new in dash unit/sender shows that pressure.
Is it necessary no, I just like to know what it really is. When it comes to engines I'm rather ****.
When I change an oil sending unit I always check the oil pressure (hot idle) with a manual gauge. Then I know exactly where on the new in dash unit/sender shows that pressure.
Is it necessary no, I just like to know what it really is. When it comes to engines I'm rather ****.
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#8
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Update: I ordered a new unit but last night i decided to give the unit a gentle tap with the hammer and lone behold it started working again! shut off the jeep and started it, didn't work... another light tap and bingo it works...
I'll still replace it but at least now i know what the problem is.
Thanks for all your help CF!
I'll still replace it but at least now i know what the problem is.
Thanks for all your help CF!
#9
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Join Date: Aug 2011
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Pretty sophisticated diagnostics!!
I love it. Simple and you found the problem. Way to stick with it.
I love it. Simple and you found the problem. Way to stick with it.
#10
Beach Bum
Update: I ordered a new unit but last night i decided to give the unit a gentle tap with the hammer and lone behold it started working again! shut off the jeep and started it, didn't work... another light tap and bingo it works...
I'll still replace it but at least now i know what the problem is.
Thanks for all your help CF!
I'll still replace it but at least now i know what the problem is.
Thanks for all your help CF!
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