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Old 06-10-2012, 06:07 AM
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ECT/EOT too High?

I an on a trip from Montana to Southern Cal. and while towing about 9k to 10k up several 6% to 8% grades my temps were running about 235-EOT and 225-ECT at the highest> I am running Vivian's 50hp tow tune for the trip. If I take the hills at about 35 to 55mph then the temps seem to stay about 220-EOT and 210-ECT. Question is do these numbers seem normal or within range? I have installed a new oil cooler 20k ago and have 120k on the truck. My sig shows what I have done to the truck. When I am on the flats I run about 196-EOT and 186-ECT. Any concerns? I am traveling back to Montana in two weeks and would like some peace of mind before starting home! Thanks for all the help in advance!!!
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Old 06-10-2012, 07:06 AM
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I have seen my EOT reach that temp pulling 8-9000# trailer up some grades here in the west. But, as you did, backed off and let them drop. Non issue.

The ECT is a bit high. Your fan must have driven you nuts with the "roaring" at 225*. Mine is roaring at 218* and brings the temp down pretty quick. Does your Insight have a gauge for Fan Speed?

As for the 186*, that should be higher. Your T-stat could be on it's way out.

So, for piece of mind, change it.
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Old 06-10-2012, 05:32 PM
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Quote:
Originally Posted by amdriven2liv View Post
As for the 186*, that should be higher. Your T-stat could be on it's way out.

So, for piece of mind, change it.
Was thinking the exact same thing. Mine did that previously, and since I installed a new thermostat the coolant never drops below 192 once the engine is warm.
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Old 06-10-2012, 06:14 PM
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Quote:
Originally Posted by amdriven2liv View Post
I have seen my EOT reach that temp pulling 8-9000# trailer up some grades here in the west. But, as you did, backed off and let them drop. Non issue.

The ECT is a bit high. Your fan must have driven you nuts with the "roaring" at 225*. Mine is roaring at 218* and brings the temp down pretty quick. Does your Insight have a gauge for Fan Speed?

As for the 186*, that should be higher. Your T-stat could be on it's way out.

So, for piece of mind, change it.
That is good news to hear about the towing temps. I'm going to see if Vivian @ Quick tricks can have the fan turn on at a little lower temp. I agree on the thermostat. Luckily I'm staying at an RV Park right next to a Ford dealer. I'll post my findings when I tow up to Los Angeles this week.

I will have to see if the Insight has a Gauge for Fan Speed. That would be nice.
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Old 06-10-2012, 06:15 PM
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One more thing. What temp T-Stat would you run?
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Old 06-10-2012, 06:45 PM
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If you can get you hands on the higher temp tstat that is better than oem temp.
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Old 06-10-2012, 06:48 PM
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i see no problem with those temps . 10 delta while towing all that weight and the fact it stays 10 is good
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