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Trouble shooting no oil pressure

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Old 10-09-2010, 01:53 PM
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Default Trouble shooting no oil pressure

I searched past post and found little.

I have a 95 GC with a 5.2L It has been sitting a few weeks and I just changed the rear rotors and pads when I noticed I have no oil pressure.

Just wanted some suggestions for troubleshooting before I drop the oil pan and check the oil pump.
Old 10-09-2010, 02:55 PM
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Check the plug on the sending unit which is located on the top rear of the engine next to the distributor.
Old 10-09-2010, 04:09 PM
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Originally Posted by ol"blue
Check the plug on the sending unit which is located on the top rear of the engine next to the distributor.
Okay, I cant really see it but I feel it. I unplugged the switch and I get a reading of 80 on my gauge. plug it back in and it drops to zero.

So this is telling me???
Old 10-09-2010, 07:02 PM
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replace the sensor, should be under 20 if u do it your self, it is still reading zero, then you probably need a pump.
Old 10-09-2010, 07:15 PM
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Originally Posted by tiwvr1
replace the sensor, should be under 20 if u do it your self, it is still reading zero, then you probably need a pump.
Yup, I guess if the auto part store rents the special tool, I might give it a go, just a little leery of tackling a job I can't even see. They couldn't of picked a worse spot to put this in.
Old 10-10-2010, 06:26 PM
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if its a 4.0 it might be easier to remove oil filter and or starter
Old 10-10-2010, 07:33 PM
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Originally Posted by mcfun61
I searched past post and found little.

I have a 95 GC with a 5.2L It has been sitting a few weeks and I just changed the rear rotors and pads when I noticed I have no oil pressure.

Just wanted some suggestions for troubleshooting before I drop the oil pan and check the oil pump.
Originally Posted by tiwvr1
if its a 4.0 it might be easier to remove oil filter and or starter
Read the first post, quoted above, and it stated it has the 5.2L V8.
Old 10-10-2010, 07:37 PM
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Might help your search more on the grandcherokee side. Maybe not sure.
Old 10-11-2010, 01:06 AM
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get a mirror those are a ***** to replace
Old 10-11-2010, 11:16 AM
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In a similar situation but with a 95 4.0 -- Reads 80 all the time, does the special tool really need to be used?
Old 10-11-2010, 11:23 AM
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Originally Posted by mcfun61
Yup, I guess if the auto part store rents the special tool, I might give it a go, just a little leery of tackling a job I can't even see. They couldn't of picked a worse spot to put this in.
No need for a special tool. Use the appropriate sized socket.

It's tough to work back there but swapping the sensor wasnt too difficult.
Old 10-12-2010, 05:59 AM
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the special tool is a socket they are inexpensive and a cheap one will , it's ubdoubtedly a one time use. a well fitting stanard socket does work as well
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