Intercooler Condensation buildup
https://www.ford-trucks.com/forums/m...ator-core.html
Pictured comparison of a Ford IC and a German swap. LOL
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Pictured comparison of a Ford IC and a German swap. LOL
I had been driving in on and off rain for several hours on the interstate (not on cruise). I was in a construction zone and the traffic in my lane sudden slowed to about 40 mph. There was an opening in the left lane so I swithched lanes and floored it to get up to speed. I got up to speed and let up on the gas and suddenly the PU started to buck and shudder. I thought oh $#!t, there is no shoulder in the construction zone to pull off onto. I looked over at the outside temperature on the dash, and it read 68 degrees. The truck was maintaining speed, but I wondered how long it would, or if it would die. After about 20 or 30 seconds it cleared up and resumed normal operation. It wasn't a very pleasant experience and I hope to never experience it again. It could have lead to an accident under different circumstances.
I spoke to the service manager and my salesman and they had no knowledge of the problem. The accessory salesman, did know of the problem and had another customer with the problem.
What is the proper way to get the information of our experiences back to Ford engineering?
I have a friend who was a truck mechanic and he said all of the big rigs have a valve to drain the condensate. Is there some way we could add on the valve to fix the problem if Ford won't?
But not "supercools", just below current ambient, OAT.
In order to avoid turbo lag Ford keeps the wastegate partially closed, closed just enough to for the turboes to produce a slight boost pressure at the inlet to the CAC. That means that the air in the crossflow piping of the CAC is under slight pressure and will be cooled to OAT as it flows through the CAC.
Assuming we're simply cruisng along at part throttle, no boost required or need, the pressure relief valve, BOV, whatever, will be open to atmospheric pressure. That will result in a high to low pressure gradiant, however slight, at in the outflow side of the CAC. It is that pressure gradiant that will result in the outlet airflow's temperature being reduced to below OAT.
If the ATMOSPHERE entering the system was already very close to the dewpoint then reducing the temperature of that same "atmosphere" at the CAC outlet below initial OAT will often result in precipitation.
The hotter the atmosphere is to start with the greater will be the ABSOLUTE volume of gaseous water it might contain. Obviously the problem is most likely to occur after hours of driving, simply cruising, with a high Rh, low span, difference, between OAT and dewpoint. So, as OAT rises incrementally, possibility of more water in the "bucket", so does the propensity for the problem to occur.
Ford is between a rock and a HARD place.
They cannot reduce the level of "boost" during simple cruisng absent disappointing a LOT of "boy-racers", or those elder folks of that mentality.
Otherwise the CAC crossflow volume could be increased thereby having no pressurization within. No pressure, no pressure drop, and thus NO "supercooling".
But then, absent that slight pressure differential, just how would Ford "sense" that the turboes always remain "spun up" just to the cusp of producing a serious level of boost. Quick reaction when the throttle plate suddenly goes fully open (and the pressure relief valve/"BOV" closes).
Question for ALL.
With 2 turbo impellers pushing air into the same CAC inlet volume how does Ford sense that each is carrying its own weight? Equal wastegate positional servomotor position feedback?
Turbo Tech Expert | Turbobygarrett http://www.turbobygarrett.com/turbob...aq#intercooler http://www.turbobygarrett.com/turbob...productcatalog
Here is a picture of the Garrett turbo on the 3.5L, notice the vacuum pot on the wastegate actuator.
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Turbo Tech Expert | Turbobygarrett Garrett | FAQ Products | Turbochargers
Here is a picture of the Garrett turbo on the 3.5L, notice the vacuum pot on the wastegate actuator.
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read your owner's manual for a definition of forced downshift.
What's an "EQ"...?
I read most of the posts about it and still wonder if this will solve the issue or is it a design dealio?
Will let you know what happens.... sometimes I really miss my big old 7.3 Ex!!










