Oil Temp Gauge

[mmt 15]

Hi,

 

My oil temp gauge reads above 140 C. after 5 minutes of driving(track car only!).

 

Fitted an aftermarked oil cooler(14 rows). Changed the sensor in the sump and changed the gauge in the car(twice)...same problem.

 

Water temp is just fine. It must be a fault somewhere in the system rather than actual too high oil temp.

 

How should I find the fault? Is changing the wires next step? Can I somehow meassure if the wires is ok.

Could it be that Peugeot got the wrong sensor for me?

 

 

Anyone ever had this problem?

 

Thanks

[Tom Fenton 1,548]

Personally for a track car I would ditch the standard gauge and fit something you can rely on to tell you an accurate temperature.

[smithy 1]

Hi,

 

My oil temp gauge reads above 140 C. after 5 minutes of driving(track car only!).

 

Fitted an aftermarked oil cooler(14 rows). Changed the sensor in the sump and changed the gauge in the car(twice)...same problem.

 

Water temp is just fine. It must be a fault somewhere in the system rather than actual too high oil temp.

 

How should I find the fault? Is changing the wires next step? Can I somehow meassure if the wires is ok.

Could it be that Peugeot got the wrong sensor for me?

 

Anyone ever had this problem?

Thanks

 

Corrosion in brown multiplug above bell housing?

Also the wire between brown plug and sensor tends to get hot and brittle and break poss insulation knackered and earthing out on engine somewhere?

Edited January 23, 2011 by smithy

[Anthony 1,003]

To read maximum on the gauge, it is seeing very little resistance.

 

Poor wiring, corroded brown multiplug etc would increase resistance, leading to the guage reading low, not high (IMO).

 

What does the oil pressure gauge do when the oil temperature gauge is reading excessively high? If the oil was genuinely that hot, I'd expect to see a significant drop in oil pressure compared to normal.

 

As Tom says, I'd be tempted to go down the route of a proper gauge and sender unit in place of the standard guessometer.

[pug_ham 245 3 Cars]

When I had strange oil temp indication on my 205 it was because the wire insulation had melted away & the bare wire was touching the block occasinally.

 

Replacing the wire from the brown multi plug sorted it out.

 

Graham.

[mmt 15]

Hi Guys,

 

Thanks for your thoughts.

 

I´ve changed the wire from the brown multiplug and down to the sensor. Did not help! Oil temp still goes over the top after 5 min of running.

 

The oil pressure is just fine when cold and after 20 min. of giving it hell on the track. Water temp is also fine( no more than 95C.).

 

The wire from the brown multiplug to the gauge must be coroded after 20 years of weather. If that would not lead into max temp reading(but low reading as Anthony said) what other faults should I look for?