An oil temp question...

MZ DAIZY

If this needs to be moved, Trips, I understand....

So, this morning was a toasty 29 degrees. Drove 20 miles to work and the oil temp gauge never left 140 degrees.

On the way home it was 52 degrees. Temp gauge said 240 degrees.

I have an oil cooler with a thermostat. Car ran no higher than 190, on 90+ days.

I noticed that when I turned the car off, the gauge dropped to 180 for about 5 minutes and then dropped to bottom. I’ve never noticed if the gauge stayed “on” after ignition is off.

My question is, faulty oil cooler, faulty thermostat on cooler, faulty sender or faulty gauge?

Thanks in advance, youse guys!

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Stillen Gen 3 CAI, Fast Intentions CBE, Z1 34 Row Oil Cooler, Ecuteck Tuned by Dave at Z1, Clear Bra, Z1 Hood Stuts

Averying

What’s the gauge reading on subsequent startups? Still getting up to 240?


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2009 Sport Touring | Platinum Graphite | GTM Stage 1 Supercharger | BC BR Coilovers | Hotchkis Swaybar | Z1 FUCAs | AME TM-02 Wheels | Z1 2-piece Front Rotors | Z1 Clutch & Flywheel | Invidia Gemini Catback | GTM Resonated Test Pipes

cv129

One quick and cheap test I can think of…get a cheap infrared temp gun and see hot warm the oil cooler core is (may need to read both left and right side of the core). Compare temp gun reading against oil temp gauge.

My experience was, with 34R oil cooler uncovered, highway speed after a 10 min idle warm up yielded 160F in the same ambient temperature.

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Setrab | RE-71 | SPL | JRZ | Nismo | ARK | Whiteline | RacingBrake | CJM Oil Pan | Ti shield

Spooler

Remove your magnetic drain plug...... LOL

cv129

This joke isn’t going anywhere anytime soon hahaha

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Setrab | RE-71 | SPL | JRZ | Nismo | ARK | Whiteline | RacingBrake | CJM Oil Pan | Ti shield

Rusty

Start the car up and se if it repeats.

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"The Difficult Anytime, The Impossible By Appointment Only"
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Dreadnaught

+1

This is what caused my high oil temps as well. I can finally sleep at night.

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Ford Diesel and Heavy Line Technician at your service.

filip00

Especially if after removal of said plug, you plug it up your

THE BULL

Gauge is staying lit upon shut down.

I would start the diag from here, Oil temperatures should not changing that drastically.
One cheap way to test is to get it to happen again, once it does plug in your OBD scanner and see if the ECM is registering the same temperatures.
If it is then it point's towards a bad sensor or faulty wiring to the sensor.
This technically should throw a code but possibly not since temp's are within specs.

Secondly the Triple meter is fed by 5 wires.

Batt
Acc
Ground
Cluster CAN H
Cluster CAN L

Let's assume ground is good, this would leave the issue between battery feed and accessory feed. It's possible that you have a faulty power feed to either of these two pins. Sometimes a loose triple meter connection, though triple meter failure is rare, if you've confirmed that ECM reading is not the same as the Triple and power checks out you should try another Triple and see if the issue goes away.

Good luck

MZ DAIZY

It was working normally today. It was a lot warmer, but I’ll keep an eye on it.

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Stillen Gen 3 CAI, Fast Intentions CBE, Z1 34 Row Oil Cooler, Ecuteck Tuned by Dave at Z1, Clear Bra, Z1 Hood Stuts