Where is my coolant going??? - Ford Powerstroke Diesel Forum
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Old 06-27-2011, 10:53 AM
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Where is my coolant going???

Driving back from Chicago Sunday,warning on dash for engine temp,temp guage near red! Then a wrench symbol comes on (throttle body??) Pull over & find resovoir empty,i put 2.5 gal of water in to top up.Every hour i had to put 1 gallon in.No visible leaks,smoke or anything & the truck runs great.
Where the hell is all my coolant going??? Please explain.This truck is a 2006 F-350 dually diesel Lariat with 118,000 miles.No warranty left either!
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Old 06-27-2011, 11:14 AM
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Sounds like EGR cooler/oil cooler failure. Egr cooler ruptures sending the coolant into the motor and out the exhaust. Kinda crazy there hasnt been any white smoke though. If the coolant isnt going on the ground then its probably going thru the motor.
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Old 06-27-2011, 11:20 AM
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Check your codes. If the EGR cooler has failed to that extent you may be looking at a head gasket repair as well. This is not a guarantee but it does happen this way.
By the way, the code check is out of curiosity and there is no code that will point squarely at a head gasket issue.
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Old 06-27-2011, 12:23 PM
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Coolant

Quote:
Originally Posted by NYC F-350 View Post
Check your codes. If the EGR cooler has failed to that extent you may be looking at a head gasket repair as well. This is not a guarantee but it does happen this way.
By the way, the code check is out of curiosity and there is no code that will point squarely at a head gasket issue.
If it is this egr cooler,what do you suggest,bypass it,replace it with oem or aftermarket?I need direction as my Ford dealer has no diesel techs,Carrier truck centre want nothing to do with it & its there international engine in this thing.
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Old 06-27-2011, 12:24 PM
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Coolant

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Originally Posted by a2elvis View Post
Sounds like EGR cooler/oil cooler failure. Egr cooler ruptures sending the coolant into the motor and out the exhaust. Kinda crazy there hasnt been any white smoke though. If the coolant isnt going on the ground then its probably going thru the motor.
No smoke at all.Truck runs just fine.I think its the egr cooler as well.This is all new to me.
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Old 06-27-2011, 12:28 PM
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Theres a lot of good info on the forum and personally I would go with a upgraded EGR cooler. Deletes are an option, but not legal in most states. Plus using deletes you can run into check engine lights.
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Old 06-27-2011, 12:29 PM
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Also the reason the EGR cooler fails is because the oil cooler fails(clogs). So make sure you have the oil cooler replaced along with the EGR cooler.
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Old 06-27-2011, 12:32 PM
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That depends on a few factors.
If you have emissions testing, or there is a chance of future legislation for adding it, get the bulletproof diesel EGR cooler for your year engine and use that.
If you do not have emissions testing, don't see your state adding it any time soon and don't mind taking the chance of getting caught breaking a Federal emissions law that can carry a HEFTY fine (Chances are slim, but it is possible), delete it.
For what its worth, I deleted mine.

Depending on your year engine and the PCM flash, you may or may not get the P0401 "insufficient EGR flow" code. To get rid of that code, you will need a tuner such as the SCT x3 or other SCT tuner with a custom tune. It isn't as expensive as that sounds. You can get the tuner with "lifetime stock tunes" for about $425 from a reputable tune writer.
If you have the tooling and know how, theres a link in my signature line that contains the PDF files for turbo removal/replacement, intake manifold replacement and oil cooler servicing. The link will have all the part numbers you will need and a few notes and tips that can help you.
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Old 06-27-2011, 12:33 PM
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Quote:
Originally Posted by Born To Run View Post
If it is this egr cooler,what do you suggest,bypass it,replace it with oem or aftermarket?I need direction as my Ford dealer has no diesel techs,Carrier truck centre want nothing to do with it & its there international engine in this thing.
Your best bet is gonna be to find a reputable AND reliable shop or mechanic to properly diagnose this truck. It may be just the egr cooler, or it could be much more and worse than that($$). The worst thing you could do now is find a shop who bandaids it or misdiagnoses it costing more money in the long run, and then leaving you with a truck that you think is horribly problematic and wanting to just sell. This is why most of this forum and member's have either done or might recommend an egr delete(or a lot of other mods for that reason) to avoid situations such as yours. Good luck!
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Old 06-28-2011, 05:15 AM
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coolant

Quote:
Originally Posted by NYC F-350 View Post
That depends on a few factors.
If you have emissions testing, or there is a chance of future legislation for adding it, get the bulletproof diesel EGR cooler for your year engine and use that.
If you do not have emissions testing, don't see your state adding it any time soon and don't mind taking the chance of getting caught breaking a Federal emissions law that can carry a HEFTY fine (Chances are slim, but it is possible), delete it.
For what its worth, I deleted mine.

Depending on your year engine and the PCM flash, you may or may not get the P0401 "insufficient EGR flow" code. To get rid of that code, you will need a tuner such as the SCT x3 or other SCT tuner with a custom tune. It isn't as expensive as that sounds. You can get the tuner with "lifetime stock tunes" for about $425 from a reputable tune writer.
If you have the tooling and know how, theres a link in my signature line that contains the PDF files for turbo removal/replacement, intake manifold replacement and oil cooler servicing. The link will have all the part numbers you will need and a few notes and tips that can help you.

Wow thanks for the info,i may delete it,we do have etest here but i get it done in Jan & they do it outside they measure oil temp & some other thing at idle only thats it.I have some homework to do.
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