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Repairing a cracked EGR Cooler?
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09-12-2018, 02:41 PM | #1 |
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Repairing a cracked EGR Cooler?
Has anyone attempted repairing a cracked EGR Cooler? Mine looks like it may have a small crack inbetween the folds in the bellows, as I see some black soot in this area (will try to take a pic soon and post).
If anyone has one for sale cheap that is in good condition, I'd love to hear from you. I was thinking about sourcing a replacement bellows and then cutting off the old one and rewilding a new one on. If I'm going that route, I'd sure like to have the bellows on hand before I take my car apart since its my daily driver. Thought and suggestions appreciated. |
09-12-2018, 03:53 PM | #2 | |
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09-12-2018, 04:51 PM | #3 |
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09-13-2018, 12:39 AM | #5 |
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Yozh, that would be cool. Are you in the Los Angeles area by chance? If not, can I paypal you some shipping money?
I just took a picture of where I think the EGR cooler is leaking from, circled in red. It's not a huge leak, just enough to smell. Car still runs as normal. Pic: https://photos.app.goo.gl/87ttrbP8P6ZTemjLA |
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09-13-2018, 12:24 PM | #7 | |
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To my knowledge no one repairs these. There are a lot of used ones, ebay ones, a car-parts ones from wrecked cars. |
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09-13-2018, 12:47 PM | #8 |
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What about a little dab of jb weld? Just a thought. I've fixed multiple cracked marine blocks with jb weld, it holds up just fine at high temps.
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09-13-2018, 12:49 PM | #9 |
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I actually thought about doing that with some of the high-temp stuff that JB Weld makes for this exact type of scenario. My thoughts were that it would be a temporary fix, likely to crack again over time. I'm going to replace mine with a known good unit and then attempt to weld repair my old one so that I have a back up.
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02-25-2019, 02:07 PM | #12 | |
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While replacing the CCV hose, I noticed a ring of black soot around one of the accordion folds of the EGR cooler, exactly what's shown in this thread. Sure, enough CCV hose was not the culprit and the leak remains and is smell very strong in the immediate area. Must be the ten times I've removed and reinstalled the cooler. I was thinking of doing JB weld as well. Since this is coming off as soon as I pass smog testing, maybe just slathering it on the whole accordion section and then wrapping it with some hi-temp resistant tape to prevent leaks in the future. Thoughts? In parallel, any non-California folks have a spare EGR cooler laying around willing to donate? ![]()
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02-25-2019, 02:49 PM | #13 |
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After seeing how bad the crack was when I originally took mine off, I'm pretty certain that no amount of JB weld would hold for any length of time. If you could find a replacement bellows to fit and clamp on, that would be the way to go, or, since you're going to remove the assembly later anyhow, you could cut the bellows out and replace it with a piece of tubing and a clamp on each side? It wouldn't last because you'd be taking out the flex that the bellows provides, but maybe it would be the trick to get you by for now? Just a thought.
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02-25-2019, 04:40 PM | #17 | |
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Repairing a cracked EGR Cooler?
Update, just a half-hour ago, I'm driving around and I hear a clackity-clack when I apply any throttle at all and power is wayyy down. Sure enough a limp mode pops up on the dash and Carly shows code 4530.
Haven't had the time to tear down into it yet, but I'm guessing the small crack has blown wide open, resulting in the loose accordion/bellows banging around (noise) and no boost pressure since all the exhaust is leaking out (limp mode). You all concur? Quote:
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02-28-2019, 09:11 AM | #18 |
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My car never went into limp mode and my bellows was cracked damn near 3/4 of the diameter. I never went WOT though because I knew it was leaking and was just babying it until I got my replacement. I don’t think you would loose much boost pressure, but have no way to verify that.
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