• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

Oil temperature gauge not working?


jblc

New Member
Joined
Dec 30, 2016
Messages
26
Reaction score
1
Points
0
Location
asdf
Vehicle Year
1997
Make / Model
Ford
Engine Size
3.0L
Transmission
Automatic
I noticed that my oil was 4 quarts low -- essentially nothing at the dipstick -- and there was a fair bit of oil splatter on the air intake tube into the throttle body / MAF sensor region. So something is off with the engine, perhaps a head gasket blown.

Question: Shouldn't an oil gauge shown an unusually high temperature as oil level drops, since there's less oil to lubricate and also carry heat away?

The gauge has remained at normal this whole time. I only recall one sudden "flutter" of the oil gauge a few weeks ago that my eye was drawn to since it also gave a small audible click as the needle hit the limit; i've never seen the oil temp gauge flutter 15 years of driving this vehicle.
 
Last edited:


RonD

Official TRS AI
TRS Technical Advisor
Joined
Jun 2, 2012
Messages
25,363
Reaction score
8,369
Points
113
Location
canada
Vehicle Year
1994
Make / Model
Ford
Transmission
Manual
Welcome to the forum :)

You won't have a stock oil TEMP gauge, there is an oil pressure gauge, but it is not a true gauge, it is either "normal" or 0 oil pressure.
It is run by a switch on the engine that is Closed when pressure is above 6psi and Open when pressure is below 6psi.

So there would be no variation of the needle on this type of pressure gauge between cold or warm or hot oil, as long as it is above 6psi the switch is Closed and the needle stays up in "normal" area.
Any other movement of this gauge's needle would be electrical changes, not oil pressure
 

jblc

New Member
Joined
Dec 30, 2016
Messages
26
Reaction score
1
Points
0
Location
asdf
Vehicle Year
1997
Make / Model
Ford
Engine Size
3.0L
Transmission
Automatic
Ah, I see, interesting. Wouldn't low oil cause reduced pressure, or only at a certain point, eg almost totally dry?
 

RonD

Official TRS AI
TRS Technical Advisor
Joined
Jun 2, 2012
Messages
25,363
Reaction score
8,369
Points
113
Location
canada
Vehicle Year
1994
Make / Model
Ford
Transmission
Manual
No, as long as the oil pump has oil "to pump" oil pressure won't change on Ranger gauge.

When oil level is low then when you go around a corner the oil in the pan can go to one side and pump goes dry for a second or two.
Might see gauge drop to 0 then back up to "norrnal" if that happens.

Best not to let oil get low
 

Sponsored Ad


Sponsored Ad

Members online

Today's birthdays

Member & Vendor Upgrades

For a small yearly donation, you can support this forum and receive a 'Supporting Member' banner, or become a 'Supporting Vendor' and promote your products here. Click the banner to find out how.

Truck of The Month


Shran
April Truck of The Month

Recently Featured

Want to see your truck here? Share your photos and details in the forum.

Follow TRS On Instagram

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store


Sponsored Ad


Sponsored Ad

Sponsored Ad


Amazon Deals

Top