High Oil temperature, Concerned the temperature is getting to high too fast . Options

[Ron914]

In preparation and hope that I pass my smog test I want to go on the So. Cal.Toy Drive in my 914 on Saturday (not sure if this is a good idea) .

I need to address what I think might be a high oil temp problem .

After driving around town for 30 minutes the photo shows my oil temperature oil gauge and a actual thermometer reading using a turkey fryer thermometer.

The needle on my console gauge gets very close to the red high mark and sometimes just about to cross into the red .

At this point the turkey thermometer reads ~216 F degrees .

My Dakota Digital head cylinder temperature reads 111C (231F) .

It is almost 80F here today in sunny So Cal. but this seems too high for me . What would be a normal reading for the oil temp gauge?

This is a newly rebuilt motor (less than 300 miles on it).
I did not replace the oil cooler (its original) but it was flushed and was clear.

The baffles are held open by spring tension since the thermostat is not working but I checked they were open by removing the coil and checking through the bolt hole. This should be ok until I get a chance to replace it .

If I pass my smog check tomorrow or Thursday I am hesitant to take the car on a long canyon drive , so not sure if I can attend the toy drive this Saturday.

Any thoughts ?

[Superhawk996]

Do you have the stock 200c temp sensor?

[Ron914]

Do you have the stock 200c temp sensor?

Yes I do .

[Superhawk996]

Do you have the stock 200c temp sensor?

Yes I do .

The edge of the red zone is supposed to be about 300F.

You say you’re running 216F so there is a disconnect somewhere if you’re getting to the red zone in 30 minutes of street driving.

Get your smog test but you should get this figured out before extended driving.


See top right graphic for approx temperatures with 200c sender.


Does gauge work properly (ie all the way to the left when cold)?

Have you verified wiring? The wire from the sender should not have any DC voltage on it. Should be high resistance when cold and rapidly decreasing resistance as oil warms up.

What size oil pump are you running? Do you know your oil pressure?

[Ron914]

Do you have the stock 200c temp sensor?

Yes I do .

The edge of the red zone is supposed to be about 300F.

You say you’re running 216F so there is a disconnect somewhere if you’re getting to the red zone in 30 minutes of street driving.

Get your smog test but you should get this figured out before extended driving.


See top right graphic for approx temperatures with 200c sender.


Does gauge work properly (ie all the way to the left when cold)?

Have you verified wiring? The wire from the sender should not have any DC voltage on it. Should be high resistance when cold and rapidly decreasing resistance as oil warms up.

What size oil pump are you running? Do you know your oil pressure?

Unfortunately I don't know what size oil pump was installed ,but I do know a new one was installed .
I don't have an oil pressure gauge but I did recently purchase one but need to get the dual sender before I can install it .
Hers a photo of the gauge without power on it and one with power (the car has been off and in the garage for almost two hours now .