Turbo trouble
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Joined: Oct 2019
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Turbo trouble
Driving home on freeway yesterday had an issue with the turbo. 2012 F250 6.7 diesel, stock, 98k miles. Went to pass a slower vehicle and BAM! Sounded like a gun shot. Saw just a little smoke out of the exhaust and the truck kept running like nothing happened. When I got off the freeway I noticed the turbo gage wasn’t registering anything. The truck was still running but it seemed like not as much power. No check engine light at that time. Had to stop and pick up grandson so I popped the hood to take a peek. Didn’t see anything out of the ordinary so I closed it up. On the way home the check engine light came on the truck was running erratically. I’m no mechanic so I called the dealership and was told it would cost $3100 + tax for new turbo installation. When I told the mechanic about the loud pop he said it may not be the turbo but some CAC thing which wouldn’t allow the turbo to build pressure.
So, am I looking at a new turbo or something else. I have not had the check engine light looked at yet. Do you think it’s ok to drive short distances?
I thank anyone in advance for your help.
An ignorant newbie.
So, am I looking at a new turbo or something else. I have not had the check engine light looked at yet. Do you think it’s ok to drive short distances?
I thank anyone in advance for your help.
An ignorant newbie.
Tuned
Joined: Jan 2010
Posts: 419
Likes: 3
Sounds like you blew a CAC hose off at a connection or blew a hole in it. I've blown CAC hoses off at the connector before because I neglected to properly torque the clamp down after installing the hose. When you went to pass the car, you stepped on the throttle causing the turbo to build boost and that's when it'll happen. And yes, it's sounds like a gunshot.
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I took the truck to O’Reilly auto parts and luckily had a young man there help me. Luckily because he was a diesel mechanic in the navy. He found the problem in just a few minutes and no, it’s not the turbo. The loud pop was a big rubber hose blowing off of the cold air connection, or something like that.
Long story short I don’t need a turbo. Thank God O’Reilly hired the young man.
Long story short I don’t need a turbo. Thank God O’Reilly hired the young man.
Post Fiend
Joined: Nov 2001
Posts: 6,748
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From: Tallassee, ALabama
You might want to go with aftermarket CAC. They are made of metal and silicone or all silicone. Many are not one part metal and one part silicone. I installed a two metal tube kit on mine. You can find them for approx $100 or less on eBay or Amazon. Or upwards of $400 for some of the named brands.
The hot side is not needed in most cases as it is metal from the factory. Many install the hot side for looks only.
Here is where I installed mine.
Rudy's Cold Air Kit Install - Ford Truck Enthusiasts Forums
The hot side is not needed in most cases as it is metal from the factory. Many install the hot side for looks only.
Here is where I installed mine.
Rudy's Cold Air Kit Install - Ford Truck Enthusiasts Forums
Tuned
Joined: Jan 2010
Posts: 419
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CAC=charge air cooler. Kind of what we figured. Glad to hear you got it fixed and you're welcome. That's what I love about these types of message boards. There is usually someone out there that's experienced the same problem you're having and knows the fix.
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Posting Guru
Joined: Aug 2007
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From: BA, OK
I'm curious to what code the truck had. This is the first time I've read someone had a check engine light associated with a blown CAC tube. MAP out of spec maybe? or maybe unrelated?
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Tuned
Joined: Jan 2010
Posts: 419
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On my 2006 6,0 I'd get a turbo underboost CEL when the CAC hose popped off.
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Codes
Dirthawg, the two codes were 1), P1247 Turbo pressure low 2), P0471 exhaust pressure sensor. Both related to the CAC hose blowing off and maybe something to do with regen. The shop I took it to thought the regen was long overdue.
Tuned
Joined: May 2019
Posts: 279
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From: Brookings, SD
Slightly unrelated, but I popped the plastic cold air tube on my 6.0 and had no choice but to keep driving it to get to the nearest town (towing my 5th wheel on a two lane highway). Before I new it, EGT's were 1550 F. Pushing the engine to keep working with no boost made for some super high EGT's.
So I'm curious, if you lose a CAC connection on the 6.7 and keep driving, does it know that EGT's are getting hot and derate, or will it keep dumping fuel just like my 6.0 did and potentially melt down the engine?
So I'm curious, if you lose a CAC connection on the 6.7 and keep driving, does it know that EGT's are getting hot and derate, or will it keep dumping fuel just like my 6.0 did and potentially melt down the engine?
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