What’s your temp?
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Senior User
Joined: Apr 2004
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What’s your temp?
17 3.5 ecoboost, 40k, truck runs around 227 average on the highway. In town 220 or so. High so far 234, on the highway. Curious what others are seeing. Ford says it’s fine to be that temp. Had a 16 that ran about 208-210, same with another 18.
Fleet Mechanic
Joined: Dec 2008
Posts: 1,909
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From: Burleson, Tx
2015 3.5 here and since I changed to the 180* thermostat the only time I see over 200* is just as the thermostat opens, unless I'm running it hard or towing. But seeing 225+ hasn't happened since the new thermostat .
I think these engines are designed to run hotter for emissions purposes - just my thinking, nothing to back it up. I didn't like it so cooler thermostat was my choice.
I think these engines are designed to run hotter for emissions purposes - just my thinking, nothing to back it up. I didn't like it so cooler thermostat was my choice.
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Senior User
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In changing the thermostat did the computer adjust ? Or did it need to be reprogrammed?
2015 3.5 here and since I changed to the 180* thermostat the only time I see over 200* is just as the thermostat opens, unless I'm running it hard or towing. But seeing 225+ hasn't happened since the new thermostat .
I think these engines are designed to run hotter for emissions purposes - just my thinking, nothing to back it up. I didn't like it so cooler thermostat was my choice.
I think these engines are designed to run hotter for emissions purposes - just my thinking, nothing to back it up. I didn't like it so cooler thermostat was my choice.
Fleet Mechanic
Joined: Dec 2008
Posts: 1,909
Likes: 133
From: Burleson, Tx
I made no other changes than the thermostat. I guess if the computer needed to adjust it did everything on its own,
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Fleet Mechanic
Joined: Dec 2008
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From: Burleson, Tx
Nope, engine coolant. Hence the thermostat.
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Senior User
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So my thermostat is a 190 and the truck runs 227 on the highway, and the fans run on high, a lot, seems odd that this is the proper cooling strategy lol.
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Senior User
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if the truck gets above a certain temp it will start showing numbers right above the temp gauge.
Fleet Owner
Joined: Jan 2004
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From: Brentwood,CA
This is for the Lariat and above, the XLT and below doesn't have that ability.