EB overheats when towing - solutions?
10-08-2015, 11:03 AM
#281
feathermerchant and tothemax - i agree with you guys. The most common damage to most turbocharger bearings and seals is due to "hot shut downs". The heat from the turbine wheel soaks into the bearings if there is no oil or coolant being pumped. In this case, if you are planning to push the vehicle hard, let it idle down to temp for a few seconds. your turbos will thank you
10-08-2015, 11:21 PM
#282
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Well I towed my new 24ft Toybox with my Rhino and a little food. No water in the tanks. Guessing it weighed 7800 lbs up over spring mountain pass last Thursday. Truck went into reduced power mode again! This is even after I removed the 6in by 15in plastic covering up the bottom of my IC. Air temps outside were only about 78F. I never did hear the cooling fans come on high and I ran the A/C on max. This is about a 7percent grade. Premium fuel, tow haul mode, left in drive. Taking it into the dealer in Vegas Tuesday after work.
All the glue that is still in the fins of my IC didn't warrant replacing it apparently and there is no update for the PCM for the 2012 trucks with the moisture issue either. Am starting to get real angry about this whole situation. I hope it blows up tomorrow maybe then someone will believe me!
10-09-2015, 10:10 AM
#283
I have seen that info before, yet I still hear and see of Eco turbos failing due to bearings being toast in under 100k. I personally know of 3 here locally, two in trucks and one in an MKT. I am sure its not a ton of them, but enough to make me trust my water pump over hoping the pressure of reverse flow will cool them enough. I have 85k on the eco and I like it. It's certainly not hurting it to let it cool down a bit running. I only do it when it's been pushed hard and you can really feel the heat coming off it. Daily driving , we just shut her down, but long hilly tows, heavy loads in high heat etc, I will still always let her cool a bit.
Your engine do it your way, mine I will do my way. By the way you don't see anywhere in the article that says letting it cool by running causes any harm.
Your engine do it your way, mine I will do my way. By the way you don't see anywhere in the article that says letting it cool by running causes any harm.
So yeah, if you were WOT for 5 min up a hill then suddenly shut off your engine, that might be a problem. Any other time, letting it idle is a waste.
Things break, **** happens, if your turbo(s) have a defect it's gonna eventually blow regardless of how you treat it. Citing you know '3 people' is such a small data pool it is not even worth mentioning.
This is along the same line of people who think they need to change their oil every 3,500 miles in a modern vehicle
Let's burn out the worlds oil reserves ASAP!
Turbochargers operate at high speed – up to 170,000 rpm – and under intense temperatures of up to 950 degrees Celsius (1,740 degrees Fahrenheit). Some previous-generation turbos were reputed to suffer from oil coking, in which they would bake their lubricating oil. Because oil coking can lead to premature turbocharger bearing failures, Ford’s advanced engine engineers specified the use of new, water-cooled turbochargers to combat this problem.
“During normal turbo operation, the turbo receives most of its bearing cooling through oil,” said Keith Plagens, turbo system engineer. “After shut down, the problems with turbos in the past were you would get coking in the center bearing. Oil would collect in the bearings, the heat soaks in and the oil would start to coke on the side and foul the bearing. Water cooling – used in the EcoBoost engine – eliminates that worry.”
The new EcoBoost V-6 uses two Honeywell GT15 water-cooled turbos.
“The EcoBoost engine uses passive thermal siphoning for water cooling,” Plagens explains. “During normal engine operation, the engine’s water pump cycles coolant through the center bearing. After engine shutdown renders the water pump inactive, the coolant flow reverses. Coolant heats up and flows away from the turbocharger water jacket, pulling fresh, cool coolant in behind. This highly effective coolant process is completely silent to the driver, continuing to protect the turbocharger.”
“During normal turbo operation, the turbo receives most of its bearing cooling through oil,” said Keith Plagens, turbo system engineer. “After shut down, the problems with turbos in the past were you would get coking in the center bearing. Oil would collect in the bearings, the heat soaks in and the oil would start to coke on the side and foul the bearing. Water cooling – used in the EcoBoost engine – eliminates that worry.”
The new EcoBoost V-6 uses two Honeywell GT15 water-cooled turbos.
“The EcoBoost engine uses passive thermal siphoning for water cooling,” Plagens explains. “During normal engine operation, the engine’s water pump cycles coolant through the center bearing. After engine shutdown renders the water pump inactive, the coolant flow reverses. Coolant heats up and flows away from the turbocharger water jacket, pulling fresh, cool coolant in behind. This highly effective coolant process is completely silent to the driver, continuing to protect the turbocharger.”
10-09-2015, 08:34 PM
#284
I live in a pretty small town so when a local dealer can rattle off 3 right away, it caught my attention. Again I do understand what Ford says the engine does, and what the guys who replaced the turbos saw. I still feel I am just playing it a little extra safe, no harm in it. My MKT is cranking out some serious heat when we pull in to get Gas when towing through the hills. I just let her idle a bit while I check trailer bearings for heat, check my lights and chains etc. Then I shut her down refuel, check the oil and off we go.
10-09-2015, 11:16 PM
#285
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So I took my truck to the dealer in Vegas Tues. Got a call today from service writer and supposedly they cant bring up any codes from the computer that say "reduced power or over temp" that came up. Tomorrow I have to go get my toybox trailer out of storage and tow it by the dealership and have the shop manager hook up all the gauges then tow it over the pass again to monitor it getting hot and see what its doing.
All the glue that is still in the fins of my IC didn't warrant replacing it apparently and there is no update for the PCM for the 2012 trucks with the moisture issue either. Am starting to get real angry about this whole situation. I hope it blows up tomorrow maybe then someone will believe me!
All the glue that is still in the fins of my IC didn't warrant replacing it apparently and there is no update for the PCM for the 2012 trucks with the moisture issue either. Am starting to get real angry about this whole situation. I hope it blows up tomorrow maybe then someone will believe me!
Makes me wonder why Ford changed them on the 2013 model that people seem to be complaining about being so loud? I will take the noise any day as compared to reduced power..... More to follow!
10-10-2015, 04:25 PM
#288
Senior Member
Well you saw (via the truck's systems) an overheated engine to the point that is reduced power. The tech saw something else.
Were y'all looking at the same engine? LOL
There seems to be a large discrepancy there.
Were y'all looking at the same engine? LOL
There seems to be a large discrepancy there.
10-11-2015, 01:25 AM
#290
Senior Member
So on my 2011, the fans are connected in series for low speed and in parallel for high speed. Pretty simple using 3 relays. If the fans are not running at all then either relay or fuse or PCM Or I guess fans themselves or wiring.