Oil Pressure Guage all the way at 80?

12 Volt Man

NAXJA Member # 1383

Location

South Weber, UT

• Feb 9, 2007

• #1

2000 XJ

I think I read a thread about this a while ago. Searched but couldn't find anything about it.

Sometimes my Oil pressure guage goes all the way to the right at 80. It happened a few times and I was able to turn my engine off then when I started it again it would be fine. Lately it happens and I have to restart the engine 3 or 4 times for it to go back to normal levels.

Seems like there was some kind of sensor near or on the oil filter?

Anyone have any advice? I think it is a guage or sensor issue, not an actual problem with my pressure.

 

Ecomike

NAXJA# 2091

NAXJA Member

Location

MilkyWay Galaxy

• Feb 9, 2007

• #2

The oil pressure sensor, near the oil filter and attached to the oil filter adapter in the engine block, passenger side is the usual suspect.

 

R

rpyne

NAXJA Forum User

Location

Provo, Utah

• Feb 9, 2007

• #3

Check the wire first, if it is loose or disconnected it will peg the guage.

 

Ecomike

NAXJA# 2091

NAXJA Member

Location

MilkyWay Galaxy

• Feb 10, 2007

• #4

rpyne said:

Check the wire first, if it is loose or disconnected it will peg the guage.

Click to expand...

When the wire is disconected does it peg the reading at 80 psi or 0 psi????? I was thinking it would be 0 psi????

I know it pegs the reading one way or the other, but I am not sure which direction.

 

R

rehab

NAXJA Forum User

Location

The Citadel, SC

• Feb 10, 2007

• #5

same thing happens here, but when i accelerate the pressure drops slightly. i have had 3 different used sending units on it and no luck. try to verify the pressure with a mechanical gauge if a new sending unit doesn't work. the sending units are relatively cheap.

 

T

Tom R.

NAXJA Forum User

Location

Utah

• Feb 10, 2007

• #6

If I remember correctly, when the sender is unplugged or otherwise has an open connection, the gauge will spike. If the wire is shorted, the gauge will show little or no oil pressure.

 

Ecomike

NAXJA# 2091

NAXJA Member

Location

MilkyWay Galaxy

• Feb 10, 2007

• #7

rehab said:

but when i accelerate the pressure drops slightly.

Click to expand...

Now there is one I have never seen or heard of! :wierd: Wonder what would cause that??????

A loose ground wire perhaps???

 

T

Tom R.

NAXJA Forum User

Location

Utah

• Feb 10, 2007

• #8

Ecomike said:

Now there is one I have never seen or heard of! :wierd: Wonder what would cause that??????

A loose ground wire perhaps???

Click to expand...

In my case, it was due to an intermittent wire short.

 

BigG

NAXJA Forum User

Location

Michigan

• Feb 12, 2007

• #9

I have this happening, too. It started right after my oil change two changes ago. Before my pressure would sit at 40 and go up to 60 occasionaly during accel. Now the entire spectrum is up 20, normal at 60 and spiking to 80.

 

A

AlohaBra

NAXJA Forum User

Location

Northern Cal

• Feb 12, 2007

• #10

Take the sender connector off, clean it with 'brakekleen' or something like that.....known problem....oil gets in there and gives false readings.

 

ktilcu

NAXJA Forum User

Location

Largo, Fl

• Feb 12, 2007

• #11

i don't mean to hijack the thred but my gauge (when idling) will jump from 0 to 40 then to 20 finally back to 0 even if i push on the gas it takes about 10 seconds then it goes up but not substantially i just changed the sending unit and still the same thing. Is it the wiring shorting or possibly the oil pump?