Oil pressure gauge woes (1 Viewer)

[Bigstar]

I know this has been beaten down but I need a little quick help. I looked at some threads on this but wanted to ask about mine specifically. When I turn my key on my oil pressure gauge needle goes to the middle reading. When I turn my FJ62 on the needle drops to 1/4 and when I get on the highway the needle reads 1/8 or zero. I lan to install a mechanical gauge but my question is... what are the possible issues here?

1. Everything is normal and the gauge is not correct?

2. The oil pump is defective?

3. other ideas?

 

[LAMBCRUSHER]

I'd suspect either wiring or gauge issues based on your problem. My gauges show no pressure unless the crank is spinning...

 

[Willard]

May be the sending unit?

Mine as swapped to a
Mechanical one. Maybe try that to know for sure.

 

[Michael Hanson]

Hi, Check the wire to the sending unit,these are getting old and brittle. Mike