High EOT'S

[curcio13085]

So I am driving 75ish on flat ground with no load. My ECT's are around 180 and my EOT's are 212. My check engine light comes on. Ok I continue to travel for 30 more miles and temp never rised any farther. BTW it was like 95 outside in south louisiana. So am I screwed and need an oil cooler?

[Nally7.3Powerstroke]

If you continue to drive it and the temps only get worse or don't fall back down, I'd say yes. Maybe park it and let it sit and drive it again and see what happens.

[southend]

Your thermostat is stuck open, you need to replace it to get an accurate delta. It may not necessarily get better, but it will be accurate.

Sent from my phone that somebody didn't help me get.

[PGreenSVT]

First off your thermostat is bad and needs to be replaced. In those temps your ECT should be in the 192-194* range. The fact that it is 180 tells me it has failed open.

Second, yes the likelihood is that your oil cooler is toast, but your test is invalid because of the thermostat. Replace the thermostat and report back your temp delta.

[southend]

Originally Posted by PGreenSVT

First off your thermostat is bad and needs to be replaced. In those temps your ECT should be in the 192-194* range. The fact that it is 180 tells me it has failed open.

Second, yes the likelihood is that your oil cooler is toast, but your test is invalid because of the thermostat. Replace the thermostat and report back your temp delta.

Ha, beat you to it.

Sent from my phone that somebody didn't help me get.

[curcio13085]

Thanks I will try and replace that and let you guys know soon. The cooler has 14k miles on it so I hope it isnt toast yet.

[southend]

Yea, I have a 24* delta, I'm installing a coolant filter this weekend. My coolant looks like someone filled the truck with ditch water, thats after i've flushed with tap water and 24 gallons of distilled water and switched to elc.

Sent from my phone that somebody didn't help me get.

[curcio13085]

Originally Posted by southend

Yea, I have a 24* delta, I'm installing a coolant filter this weekend. My coolant looks like someone filled the truck with ditch water, thats after i've flushed with tap water and 24 gallons of distilled water and switched to elc.

Sent from my phone that somebody didn't help me get.

you think our high deltas have anythign to do with it being crazy hot?

[southend]

Nope.

Sent from my phone that somebody didn't help me get.

[PGreenSVT]

What he said ^^^