1HZ Oil Pressure numbers

[woytovich]

I'm new to the 1HZ/diesel world....
The FSM I have shows 4.3psi at idle as a low number... that seems REALLY low... What are people seeing that have aftermarket gauges?

 

[OGBeno]

The information in the FSM is correct, Mark.

Notice it says "or more"... So that would be the low end of the oil pressure. Make sense?

 

[woytovich]

The information in the FSM is correct, Mark.

Notice it says "or more"... So that would be the low end of the oil pressure. Make sense?

Yes, I understand that that is what they meant.
I'm wondering then what psi would be prudent to use for a low pressure alarm. I've seen threads that use a 5psi sender and I know some digital systems have an adjustable setting.
If sub 5psi is common at idle a 5psi alarm would be a problem.

 

[JuanJ]

Hello,

Oil pressure is not a problem with most Toyota engines. Most will give you plenty of warning.

You should worry only if the gauge remains in L at high speed/high rpm.

For peace of mind, have the oil pressure sender replaced and do not look back.

The FSM is your friend. Trust the specifications.





Juan

 

[db3]

I've added a mechanical oil pressure gauge on my 1HZ which runs about 20 psi at idle and 60 psi at 2200 RPM. I've got a low pressure alarm set for 4 psi.