Oil Pressure Guage Replacement
#16
Member
Thread Starter
Join Date: Apr 2010
Posts: 170
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Well, I changed out the intrument cluster, and the exact same thing happened. The oil pressure stays around 40 until the engine warms up to over 200, then it goes down to 10psi at idle, and then drops to zero, with a check guages light. I'm so confused. I've changed everything out but the oil pump, so maybe my oil pump is working erratically? Any thoughts, or anyone with a similary issue? Like I said,
I've changed the sending unit, the instrument cluster, and mechanically tested the pump, so what is next?
I've changed the sending unit, the instrument cluster, and mechanically tested the pump, so what is next?
#17
Senior Member
Join Date: May 2010
Location: MI 48642
Posts: 882
Likes: 0
Received 1 Like
on
1 Post
Year: 1996
Model: Cherokee
Engine: 4.0
Well, I changed out the intrument cluster, and the exact same thing happened. The oil pressure stays around 40 until the engine warms up to over 200, then it goes down to 10psi at idle, and then drops to zero, with a check guages light. I'm so confused. I've changed everything out but the oil pump, so maybe my oil pump is working erratically? Any thoughts, or anyone with a similary issue? Like I said,
I've changed the sending unit, the instrument cluster, and mechanically tested the pump, so what is next?
I've changed the sending unit, the instrument cluster, and mechanically tested the pump, so what is next?
#18
Member
Thread Starter
Join Date: Apr 2010
Posts: 170
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Where did you get your sending unit from? I know auto zone will try and sell you a switch/relay and call it the sending unit (forgot what it is called, but installed on top of the engine instead of by your oil filter). They obviously look identical, but go in two different places on the engine. I replaced my sending unit with a brand new one and still had my gauge pegged. I know you said you replaced it, and it is not the issue, but figured my $0.02 may lead to something.
#19
Member
Thread Starter
Join Date: Apr 2010
Posts: 170
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Maybe I should replace the oil pump next? Maybe the guage is reading right and the pump is working intermittenly? Has anyone ever heard of this? I sort of figured that either the pumped worked or it doesn't, and there is no in between? Any knowledgeable experts that can comment on this? thx
#20
Maybe I should replace the oil pump next? Maybe the guage is reading right and the pump is working intermittenly? Has anyone ever heard of this? I sort of figured that either the pumped worked or it doesn't, and there is no in between? Any knowledgeable experts that can comment on this? thx
Thread
Thread Starter
Forum
Replies
Last Post
Blackcherokee290
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
27
07-26-2022 07:52 PM
ammonllewis1
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
9
08-31-2015 11:27 AM
EBowen95
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
49
08-25-2015 08:44 PM
jeeper albert
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
08-24-2015 01:17 PM
kjdad
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
12
08-21-2015 08:11 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)