New STC Livewire - Oil & Coolant temp seems high - Ford Powerstroke Diesel Forum
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Old 06-12-2012, 12:00 PM
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New STC Livewire - Oil & Coolant temp seems high

I just installed my new SCT livewire the other day and flashed the street tune to the truck. When I run around town and down the highway my temps vary below:

Oil: 200-220 deg F (212 average)
Coolant: 184-200 deg F (192 average)

Ambient temperature outside is around 90-95 deg F. I'm getting these numbers off the livewire display and they seem a bit high.

Coolant was flushed 6 months ago, EGR cooler is blocked off (no leaks). Oil cooler was done back when the egr cooler was done (approximately 2 years ago). About 6 months ago I put head studs in it as a result blown head gaskets at the time.

Any ideas? Or is this normal?
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Old 06-13-2012, 12:41 PM
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hey josh, when you say the oil cooler was done, what was done? when you flushed coolant, did you run chem thru or what? the temps do seem a bit high. if during the coolant flush you ran chem thru, you may have "re-clogged" the oil cooler with the debris from the cleaning. did you run distilled water thru also? just a thought. how do you like the livewire?
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Old 06-13-2012, 12:47 PM
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Dave,

Thanks for the reply. I replaced the oil cooler with a new one a couple years ago when I replaced & blocked off the EGR cooler. Also when I flushed the system I just used regular tap water, no chemicals or anything. I believe I used regular tap water too once I refilled the coolant, I can't remember exactly.

My thoughts on the Livewire are:
- it's quite big and bulky and the rj-45 connection is inconvenient for mounting
- the stats you can monitor are nice (that's why i'm posting here today )
- i wish there was an auto-off feature after it detected no activity (say after 5 minutes of engine off and no buttons pressed) right now I have to manually turn it on and off
- the refresh rate on the stats is so fast that the numbers blur together, especially on rapid changing values such as boost, sometimes i can't tell if i'm getting 18-19 psi or 8-10. this seems to be because the lcd screen is of poor quality, a more modern lcd would be better
- during a hot day or in direct sun it's very hard to read the screen until it cools off (due to cheap quality, same as previous)


Other than that it's not bad, I wanted it to monitor engine vitals and tuning
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Old 06-13-2012, 01:02 PM
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I agree with the poor quality of the screen, what I do is when I know the truck is going to sit in the sun I pull the LW off of its mount and wrap it in a towel. Seems to do the trick.
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Old 06-13-2012, 01:17 PM
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That's a good idea, I had been pulling it off and storing it in the console, but it can't breathe very good there.
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Old 06-13-2012, 02:13 PM
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1. if your coolant temp is 200* at 65mph and your oil temp is 220* then the oil cooler is "done" (needs to be replaced).
2. You should never put tap water in your truck.....anywhere in the truck. You need to try and flush your coolant system with restore and then restore+ and that will hopefully clear your system but dont hold your breath. The tap water causes rust to build up in our trucks. After you do the flush, which needs to be done whether you replace the cooler again or not, whatever coolant you go with (I prefer an CAT rated ELC) you need to use distilled water not tap water.
3. Its not normal. Your EOT & ECT should be approx 190* The EOT ca n be from 190*-205* but should not be more than 205* or at most 15* more than the ECT at 55-65mph on flat road unloaded.
4. Yous should drop the Livewire and get a Insight CTS

Last edited by WarChild; 06-13-2012 at 02:20 PM.
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Old 06-13-2012, 05:13 PM
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WarChild,

Well it looks like I'll be putting a new cooler in it then. I've been looking around and the BPD external oil coolers sure seem like the smart thing to do, but they are quite expensive. Is there another alternative or is a stock cooler with the proper water/coolant good enough to last a long time?

I used the premium gold from Ford last time, should I switch to another brand if i'm going to flush the system?

Also what's the difference i EOT and ECT? Is EOT cooland and ECT oil?
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Old 06-13-2012, 05:58 PM
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ECT = Engine Coolant Temperature
EOT = Engine Oil Temperature

Also wanted to add that the ECT can fluctuate some above 190*. If you are towing, loaded, hills, etc. the ECT and EOT might increase. Under these circumstances the 15* thing is void. Just make sure that your oil temp never goes above 240ish and you coolant temp never above 220 or something like that. Your fan should be really loud and cool the coolant down if it gets to that point but the oil temp is very important because the oil will break down with enough temperature.
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Old 06-13-2012, 06:03 PM
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Got it thanks, I think I might do a chem flush and put a good coolant filter system on and see how it does. If I'm still having issues then I'll replace the oil cooler.

Thanks for the info guys, much appreciated.
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Old 06-13-2012, 06:10 PM
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Coolant filter is ALWAYS a good idea
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