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post #1 of 16 Old 01-12-2011, 01:23 PM Thread Starter
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flip flopped?

Finally got my Insight installed. My EOT is reading about 174, and my ECT is reading 180. Aren't these usually the other way around? The ambient temp here is about 13*. The highest the ECT went was 182, and the EOT rose to 177, seems to stay a pretty consistent 5-6* apart, always with the EOT the lower. This was cruising at 65mph for about 15 miles, and the higher temps came when I goosed up to about 75mph. Is this anything to be worried about? Also my trans temp was reading ~160*, sound about right?

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post #2 of 16 Old 01-12-2011, 01:28 PM
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ECT of 182 is low. Check on a longer drive the EOT should be higher than ECT but 182 is too low for ECT so you may need to check / replace your thermostat.

- Karl
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post #3 of 16 Old 01-12-2011, 01:29 PM
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Probably time to change your thermostat. You should be right around 190 with a stock thermostat.

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post #4 of 16 Old 01-12-2011, 01:29 PM
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nylyon beat me to it.... Nice...

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post #5 of 16 Old 01-12-2011, 06:43 PM Thread Starter
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alright thanks guys. Guess I'll knock that out tomorrow.

2013 Harley Davidson Street Glide, Midnight Pearl
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2005 F-250 SCSB Lariat FX4.
ARP Head Studs
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post #6 of 16 Old 01-13-2011, 08:17 AM Thread Starter
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Can I pick up a thermostat at an auto parts store or would it be better to just use an OEM one? Any input would be appreciated.

2013 Harley Davidson Street Glide, Midnight Pearl
Vance and Hines Big radius pipes
Power Commander V
Arlen Ness air cleaner

2005 F-250 SCSB Lariat FX4.
ARP Head Studs
EGR Delete
SCT X3 with IDP tunes.
Edge Insight CS w/ EGT probe
4" MBRP turbo back
Quick Tricks 58V FICM


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post #7 of 16 Old 01-13-2011, 08:27 AM
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I bought mine from my local dealer, but for a thermostat (in my opinion) you can get it anywhere.

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post #8 of 16 Old 01-13-2011, 05:16 PM Thread Starter
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Well I wen't and picked up a thermostat, $40 at the dealer. Came with a new housing and everything, kinda surprised by that. Anyhow, I'm now reading ECT of 190-194, and EOT of 190. Ambient temp was 10*. Shouldn't the EOT usually be higher? Not once did I see my EOT higher than the ECT.

2013 Harley Davidson Street Glide, Midnight Pearl
Vance and Hines Big radius pipes
Power Commander V
Arlen Ness air cleaner

2005 F-250 SCSB Lariat FX4.
ARP Head Studs
EGR Delete
SCT X3 with IDP tunes.
Edge Insight CS w/ EGT probe
4" MBRP turbo back
Quick Tricks 58V FICM


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post #9 of 16 Old 01-13-2011, 05:28 PM
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If you're sure you're driving long enough then the only other thing it can be is the oil temperature sensor

- Karl
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post #10 of 16 Old 01-13-2011, 05:45 PM Thread Starter
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I drove for a solid 15 minutes. Is that not quite long enough?

2013 Harley Davidson Street Glide, Midnight Pearl
Vance and Hines Big radius pipes
Power Commander V
Arlen Ness air cleaner

2005 F-250 SCSB Lariat FX4.
ARP Head Studs
EGR Delete
SCT X3 with IDP tunes.
Edge Insight CS w/ EGT probe
4" MBRP turbo back
Quick Tricks 58V FICM


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