Tremor with 7.3 overheating issues!

4kracing

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Jun 19, 2020
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2020 F250 Tremor Lariat 7.3
Has anyone had any issues with overheating? Not boil over type issue, just running very hot every now and then.

When I was first driving home after picking up my truck in January, I had the AC on about an hour out from dealer, and my temp went to 400deg w/ warning light. I took it in for repair and they said it was a faulty fan clutch. So it gets replaced and seems to be fine, and the truck now has 7700 mi on it. One caveat, the AC never seems to work that great, it sometimes takes a while to cool down, and when it does it will warm up in stop and go driving. (Something a miss!)

Yesterday I take a 47 mile drive on the freeway to make a purchase, and about half way the temp warning light hits 400deg while using the AC in 92deg weather on a slight incline on the fwy. WTH??? Then the trans temp are up too in an empty truck! Now it's back to the dealer for warranty to figure this crap out.

Anyone have an idea what ford may be miss diagnosing?
 

JC_Tremor

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Has anyone had any issues with overheating? Not boil over type issue, just running very hot every now and then.

When I was first driving home after picking up my truck in January, I had the AC on about an hour out from dealer, and my temp went to 400deg w/ warning light. I took it in for repair and they said it was a faulty fan clutch. So it gets replaced and seems to be fine, and the truck now has 7700 mi on it. One caveat, the AC never seems to work that great, it sometimes takes a while to cool down, and when it does it will warm up in stop and go driving. (Something a miss!)

Yesterday I take a 47 mile drive on the freeway to make a purchase, and about half way the temp warning light hits 400deg while using the AC in 92deg weather on a slight incline on the fwy. WTH??? Then the trans temp are up too in an empty truck! Now it's back to the dealer for warranty to figure this crap out.

Anyone have an idea what ford may be miss diagnosing?
Whoa, that's an odd issue, I've yet to have any such issue like this. It's hot as F_ck here in South Texas and AC on MAX AC does a decent job in a few minutes of cooling the cab. Another dealership you can take it to for warranty work, different set of eyes?

When you say 400F, you mean coolant? Perhaps coolant level is low? If it is getting that hot, sounds like the fan may not be kicking on. Perhaps a fuse? I'm just guessing though and certainly am no expert concerning this engine/platform.

We've seen higher trans temps upwards of 215F to 230F hauling and unloaded both, apparently that is normal for the trans and fluid.
 

driftwoodsvt

First Tremor on Methods!
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Mar 4, 2020
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Driftwood, TX
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2020 F250 Tremor 7.3L Lariat w/ Ultimate & Sport
Doesn't sound good. Maybe a stuck thermostat? Take it in before you damage the engine!
 

modified

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Jul 8, 2019
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2014 RAM 2500 Diesel
Has anyone had any issues with overheating? Not boil over type issue, just running very hot every now and then.

When I was first driving home after picking up my truck in January, I had the AC on about an hour out from dealer, and my temp went to 400deg w/ warning light. I took it in for repair and they said it was a faulty fan clutch. So it gets replaced and seems to be fine, and the truck now has 7700 mi on it. One caveat, the AC never seems to work that great, it sometimes takes a while to cool down, and when it does it will warm up in stop and go driving. (Something a miss!)

Yesterday I take a 47 mile drive on the freeway to make a purchase, and about half way the temp warning light hits 400deg while using the AC in 92deg weather on a slight incline on the fwy. WTH??? Then the trans temp are up too in an empty truck! Now it's back to the dealer for warranty to figure this crap out.

Anyone have an idea what ford may be miss diagnosing?

No ideas here. Hopefully the dealership treats you right though. Let us know what the problem turns out to be.
 

Grabber

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May 28, 2020
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New Jersey
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2020 F250 Tremor
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2009 GT500 & 2018 E350
To me it sounds like a thermostat or fan clutch again. It is possible that they could have put another bad fan clutch in. From what you describe that is what it sounds like to me.
 

JC_Tremor

Toasty
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Focus ST
What ever happened, did the issue get sorted out? What news?
 

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