Still learing the 5th gen. Please help.

[HSKR R/T]

If it was an open therm the temps wouldn't be that high. Been there, done that.

Not necessarily. It might not be stuck fully open. Either way, his issue is 100% thermostat.

 

[Fed372]

If it was an open therm the temps wouldn't be that high. Been there, done that.

E
Well I just thought to myself what does the coolant look like. Welllllll that's cold how fked am I. It's not over heating. It's running fine an blowing hot air. But after seeing this I'm sick.

 

[Fed372]

If it was an open therm the temps wouldn't be that high. Been there, done that.

E
Well I just thought to myself what does the coolant look like. Welllllll that's cold how fked am I. It's not over heating. It's running fine

Not necessarily. It might not be stuck fully open. Either way, his issue is 100% thermostat.

Honestly I just popped the rad cap. This is what I found. It's cold. Hasn't run for a few hours.

 

[Fed372]

If it was an open therm the temps wouldn't be that high. Been there, done that.

E
Well I just thought to myself what does the coolant look like. Welllllll that's cold how fked am I. It's not over heating. It's running fine

Not necessarily. It might not be stuck fully open. Either way, his issue is 100% thermostat.

Honestly I just popped the rad cap. This is what I found. It's cold. Hasn't run for 2 hours

 

[HSKR R/T]

As I said in PM, looks like you might have a bad oil cooler and low on coolant.

 

[SD Rebel]

As HSKR R/T mentioned, you could just have a bad oil cooler, common issue especially pre-2021 models have the older style oil cooler, not sure what year you have?

Check your engine oil cap as well, hopefully it's fine.

 

[Fed372]

As HSKR R/T mentioned, you could just have a bad oil cooler, common issue especially pre-2021 models have the older style oil cooler, not sure what year you have?

Check your engine oil cap as well, hopefully it's fine.

2020. With the heat off it seems to run at normal temps. Fan kicks ok. Drops the temps to 205 206. Oils sitting at 212 with heater off. Normal.. But as soon as I turn the heat back on it drops back down below 190 and oil to like 170 181

 

[SD Rebel]

2020. With the heat off it seems to run at normal temps. Fan kicks ok. Drops the temps to 205 206. Oils sitting at 212 with heater off. Normal.. But as soon as I turn the heat back on it drops back down below 190 and oil to like 170 181

Majority of oil (milkshake) on coolant caps and coolant dip sticks is the oil cooler leak, especially with your model year.

Once confirmed, and you get the cooler replaced and the coolant flushed, hopefully have everything back to normal.

Did you check your engine oil cap?

 

[Fed372]

Majority of oil (milkshake) on coolant caps and coolant dip sticks is the oil cooler leak, especially with your model year.

Once confirmed, and you get the cooler replaced and the coolant flushed, hopefully have everything back to normal.

Did you check your engine oil cap?

I did. Everything seems ok. Except for what i saw in the coolant. However I turned the heater off an the truck came up to temp. Oil came to temp turned heater back on 4 an let it run for the past 30 min and everything is staying up to temp. Om beyond lost. At this point. Om calling it a win and going to bed. Gonna swing by dealer Monday.
Ty for the help.

Thank you all

 

[KingChu]

If it was an open therm the temps wouldn't be that high. Been there, done that.

Agree completely. Mechanic here. With 20 degrees ambient driving around, and a stuck open thermostat, like I pointed out earlier, you would be seeing coolant temp drop hard like in the 150 or lower range. I see O’Reilly has a 180 and 192 alternate temp thermostat. OE is 203. It is more likely that someone put a 192 in, as you said in your latest post it got to 190 and went down from there. Either way the fix is the same. The only other thing I would make sure of is that the fan(s) are not stuck on as that would cause your coolant temp to stay 10 to 20 degrees below fully open temp.

Good luck and hope it’s just the thermostat.

 

[Fed372]

Agree completely. Mechanic here. With 20 degrees ambient driving around, and a stuck open thermostat, like I pointed out earlier, you would be seeing coolant temp drop hard like in the 150 or lower range. I see O’Reilly has a 180 and 192 alternate temp thermostat. OE is 203. It is more likely that someone put a 192 in, as you said in your latest post it got to 190 and went down from there. Either way the fix is the same. The only other thing I would make sure of is that the fan(s) are not stuck on as that would cause your coolant temp to stay 10 to 20 degrees below fully open temp.

Good luck and hope it’s just the thermostat.

Fan is not stuck on. As I said above my antifreeze is red soup also. 2 weeks ago I drove it in 20 degree temps 206 203. All the way for 2 hours.

 

[Trooper4]

Fan is not stuck on. As I said above my antifreeze is red soup also. 2 weeks ago I drove it in 20 degree temps 206 203. All the way for 2 hours.

You might try a coolent flush, and a factory thermostat to rule out any problem there. That gunk in the radiator doesn't look very good.

 

[HSKR R/T]

You might try a coolent flush, and a factory thermostat to rule out any problem there. That gunk in the radiator doesn't look very good.

It's probably his oil cooler that is bad. Without fixing the oil cooler, flushing the coolant won't help much.

And definitely change thermosyay with a factory 203 when you do the flush.

 

[Trooper4]

It's probably his oil cooler that is bad. Without fixing the oil cooler, flushing the coolant won't help much.

And definitely change thermosyay with a factory 203 when you do the flush.

Probably?

 

[Fed372]

Agree completely. Mechanic here. With 20 degrees ambient driving around, and a stuck open thermostat, like I pointed out earlier, you would be seeing coolant temp drop hard like in the 150 or lower range. I see O’Reilly has a 180 and 192 alternate temp thermostat. OE is 203. It is more likely that someone put a 192 in, as you said in your latest post it got to 190 and went down from there. Either way the fix is the same. The only other thing I would make sure of is that the fan(s) are not stuck on as that would cause your coolant temp to stay 10 to 20 degrees below fully open temp.

Good luck and hope it’s just the thermostat.

Confirmed oil cooler... howeever my extended warranty didnt covet it. Go figure. any tips for doing the job myself. We have a full service shot at our disposal. But figured if the warranty covered it we would let them do it. But now I gotta do it.

 

[HSKR R/T]

Confirmed oil cooler... howeever my extended warranty didnt covet it. Go figure. any tips for doing the job myself. We have a full service shot at our disposal. But figured if the warranty covered it we would let them do it. But now I gotta do it.

Buy new oil cooler, it's basically a sandwich adapter between filter and block, replace. Do fill oil change and new oil filter. Do a full coolant system flush, and also clean out/flush the coolant overflow reservoir.

 

[jeepin7]

May have missed it in the conversation, but what motor? Gas or diesel? Diesels had an issue with the egr cooler that created what you are looking at. Maybe covered under the recall.


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