Deltas higher then usual

[towboat]

My deltas typicly run around ECT 189/193 EOT 190's/203 ! last couple days they are running higher ECT 197/207 EOT 197/ 210 . No load just driving, air temps mid to upper 90's !!

[dannyboy950]

The hotter the ambient temps get the higher the other temps get. This is normal.
Continue to monitor temps but as long as your EOT does not get greater than 15 deg. higher than your coolant.

[towboat]

Thanks for the response Dannyboy950, something has changed with the running temps of my truck ! two weeks ago I drove the truck to Mich , 65 to 70 mph most of the way, truck ran great, everything looked as it should. now my temps are running higher then usual and I've noticed after the truck has warmed up both temps are at times are the same some times. Still nothing to worry about ?

Thanks Mike

[southend]

Your ok, good job monitoring.:thumbup:

Sent from my SCH-I500

[dannyboy950]

Please further define the" at times the both temps are the same" for how long a duration.
When both temps are the same no heat exchange can take place. This is called the saturation point, normally occures just before total engine failure.

I have never known of it to occure and then fix itself, unles you are seeing the temps when the thermostat is sticking closed for a bit.

Otherwise your temps are still normal for the circumstances.

[towboat]

I just had Hd gaskets and studs put on my truck so I watch the deltas fairly closely! when the Heads were done I had the tech replace the oil cooler, water pump, thermostat, fuel pressure spring, clean the turbo. Truck runs good and deltas were fine the whole trip to Mich and back 1700 miles , highest delta reading was ECT 195 EOT 203. Now running around town I'm seeing deltas that look normal ECT 193/ EOT 197 and deltas like ECT204/ EOT204. But it never seems to be consitant, wheather I'm sitting at lights or running down the Hwy, the deltas can go from matching numbers to a couple degrees different from each other. I don't remember seeing my ECT go up to 200 or higher before my trip, but back then I suspected a bad thermostat causing ECT to be around 176/ 180 so I had the stat and water pump replaced.

Thanks

[dannyboy950]

Thinking about it it has to be a bad sensor because it is illogical for the system to reach saturation and still be in the lower temp ranges. Don't know where my head is at this morning.

[towboat]

That's alright you didn't scare me to bad If you were to guess what sensor would cause these readings ! I don't want to leave it like this ! I've become like an old women monitoring her meds with my engines deltas I've been watching my coolant and oil ! both seem to be clear of each other and levels are staying good, truck runs strong, will see how it tows my boat tomorrow.

Thanks

[dannyboy950]

Probably the oil sensor the coolant still seems in normal range for atmospheric temps.

I must admit the whole situation seems a bit odd.

[southend]

Originally Posted by dannyboy950

Probably the oil sensor the coolant still seems in normal range for atmospheric temps.

I must admit the whole situation seems a bit odd.

Read both sensor readings in the morning before you for it up and see if they are the same.

Sent from my SCH-I500