faulty oil pressure guage/wiring?

[robnicko]

thats Penrite oil, renowned for maintaining good pressure all round!

mine cold start goes up the same as yours and when warm sits about halfway between the 2nd & 3rd marks from bottom up
keep in mind your old sender was not functioning properly as well, if you cleaned the internals of it as i mentioned you would probably have seen similar results. Before i cleaned my sender cold start would be beneath the 3rd mark from the bottom and once warm would sit on or just below the 2nd mark from the bottom

I do remember when i bought the car new it would behave as your new sender is showing

 

[petegangies]

thats Penrite oil, renowned for maintaining good pressure all round!

mine cold start goes up the same as yours and when warm sits about halfway between the 2nd & 3rd marks from bottom up
keep in mind your old sender was not functioning properly as well, if you cleaned the internals of it as i mentioned you would probably have seen similar results. Before i cleaned my sender cold start would be beneath the 3rd mark from the bottom and once warm would sit on or just below the 2nd mark from the bottom

I do remember when i bought the car new it would behave as your new sender is showing

Its behaving the same as it was up until about 2 weeks ago. Mines always sat pretty high tbh.

 

[petegangies]

@Kernal @robnicko .. looks good to me!

 

[Kernal]

FWIW the pressure seems to go up much further (almost pegged to the top) compared to any of my FZJ80's ever did (using ~4-5 quarts 10W-40 with 2-3 quarts of 20W-50 Mobil 1 mix for example).

Can you find the viscosity specs for your oil?

It would be interesting if the pressure levels were different with an OEM Toyota filter installed ie: at your next oil change.

 

[robnicko]

@Kernal @robnicko .. looks good to me!

thats pretty much identical to mine. I run the Toyota filter FWIW

 

[petegangies]

FWIW the pressure seems to go up much further (almost pegged to the top) compared to any of my FZJ80's ever did (using ~4-5 quarts 10W-40 with 2-3 quarts of 20W-50 Mobil 1 mix for example).

Can you find the viscosity specs for your oil?

It would be interesting if the pressure levels were different with an OEM Toyota filter installed ie: at your next oil change.

from my last oil analysis:

From the Penrite website: