Steve Mutter Posted May 1, 2013 Share Posted May 1, 2013 I can not find a post that talked about egr cooler failures be the next big thing. I can't remember who posted, but I am wondering how they are failing, are they just plugging up with carbon or are they leaking coolant internally. Quote Link to comment Share on other sites More sharing options...
Alex Bruene Posted May 1, 2013 Share Posted May 1, 2013 Lots of them plugging up. Big time! Quote Link to comment Share on other sites More sharing options...
Matt Saunoras Posted May 1, 2013 Share Posted May 1, 2013 I had one leaking (not sure if it was coolers or o-rings) and quite a few plugged up. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted May 1, 2013 Share Posted May 1, 2013 P0401. Forget whether it passes the engine running test. They are clogging. Quote Link to comment Share on other sites More sharing options...
Bruce Amacker Posted May 1, 2013 Share Posted May 1, 2013 Can someone get me some nice pics shot with a camera on a white background? Thanks! Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted May 1, 2013 Share Posted May 1, 2013 HAVE SOME! Will send em tonite. Quote Link to comment Share on other sites More sharing options...
lmorris Posted May 1, 2013 Share Posted May 1, 2013 We have 5 trucks lined up waiting for core replacements, all plugged. Parts backordered, USA. Quote Link to comment Share on other sites More sharing options...
Bruce Amacker Posted May 2, 2013 Share Posted May 2, 2013 OK, we have a pattern failure here. What are the custs complaining of- CEL? Driveability problems? Smoke? Sluggish? If it's not DTCs what leads you to the cooler? Please chime in with why these trucks are showing up with coolers clogged. Anyone cleaning them, or do they all get a double bundle? Thanks, guys, I appreciate it greatly. Keith sent me some excellent pics showing a clogged core. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted May 2, 2013 Share Posted May 2, 2013 Bruce, the picture I sent you was a cooler out of a 2011 F350 6.7L that had an intermittent check engine light on. The code in memory was a P0401 with no codes produced by KOEO & KOER self tests. TSB 12-6-14 has us perform a key on engine running (KOER) self test and asks if DTC P2457 is present. If not, the TSB does not apply. But then you go ahead and perform the appropriate pinpoint tests and come up with nothing. Contact the Hot-Line and you spend more time performing more tests and come up empty. By this time the truck is already down 2 days and the customer wants his truck back so you clear the code and return the truck to service. A week or a month later it returns with the Check Engine light on, P0401 in memory. I have gone through this with three trucks now. I decided finally to pull the cooler anyway and what you saw in the pictures is what I found. I replaced the core and the truck is gone. I suppose cleaning could have worked but I don't know of an effective way to clean inside of the passages. What's more is we don't know what is causing this to happen to an otherwise healthy EGR cooler and engine. Running well, no wetness in the exhaust, no coolant leaking... Quote Link to comment Share on other sites More sharing options...
lmorris Posted May 2, 2013 Share Posted May 2, 2013 No driveability concerns. Just CEL on and lacks power. All of ours have high idle switches and barely get shut off. Anything with a P0401 here gets a cooler if the bypass is working. We have had one with a broken bypass valve so far. Quote Link to comment Share on other sites More sharing options...
DieselD Posted May 3, 2013 Share Posted May 3, 2013 what kind of mileage do these have? So far I have not had one fail just yet but this is good info! Quote Link to comment Share on other sites More sharing options...
Bruce Amacker Posted May 3, 2013 Share Posted May 3, 2013 The HD fleets are cleaning them with some success in similar circumstances when they are out of warranty. Here is a presentation that was given out at TMC in maybe 2011 with a little bit of info: Quote Link to comment Share on other sites More sharing options...
Matt Saunoras Posted May 4, 2013 Share Posted May 4, 2013 90% of the ones I've done were low miles with high hours. 2 had higher miles 75k+ and they were the ones that I fought up-pipe hardware that wanted to snap off. Quote Link to comment Share on other sites More sharing options...
rlchv70 Posted May 9, 2013 Share Posted May 9, 2013 FYI, for those with access to the International system, they have a cleaning kit for their 11 and 13L engines. Might want to check it out. Quote Link to comment Share on other sites More sharing options...
Alex Bruene Posted May 9, 2013 Share Posted May 9, 2013 We send our 6.0 intakes out of ultrasonic cleaning. They come back looking like brand new. Quote Link to comment Share on other sites More sharing options...
lmorris Posted May 9, 2013 Share Posted May 9, 2013 I guess the main question is can these 6.7L coolers be cleaned. How far does one disassemble the cooler? If you remove the bypass valve you have to replace all the gaskets, which means a complete disassembly at that point. I suppose one could remove the rear cover and just the EGR valve. Would the cleaning process affect the rear orings? I can see this being beneficial on 6L and 6.4L, due to the construction of the cooler, but I have doubts with the 6.7L. Our regional trainer was inquiring about whether it would be worth attempting, especially since they seem to get back ordered all the time. Quote Link to comment Share on other sites More sharing options...
Bruce Amacker Posted May 10, 2013 Share Posted May 10, 2013 I'm thinking any "real" cleaning includes an R&R. BG products and bullshit aren't going to clean a clogged cooler. Quote Link to comment Share on other sites More sharing options...
Alex Bruene Posted May 11, 2013 Share Posted May 11, 2013 My BG friend will confess that the EGR cleaner only works as a maintenance. If the intake or EGR are too coked, it's a waste of time and money. Quote Link to comment Share on other sites More sharing options...
djmiller Posted May 23, 2013 Share Posted May 23, 2013 When GM first put EGR coolers on the LMM D-Max in late 07 they had this issue. You were supposed to pull them, clean with simple green, install, and re-test.....Clock the time.....replace it on the first go...and fix the truck for the guy. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted July 7, 2013 Share Posted July 7, 2013 This is what an intermittent check engine light with a P0401 in continuous memory. It will pass the KOER test. It will pass pinpoint tests and not really look screwy in Data Logger. Quote Link to comment Share on other sites More sharing options...
mchan68 Posted July 7, 2013 Share Posted July 7, 2013 I get to attack my very first one tomorrow. But this one did set a P2457 during KOER. Quote Link to comment Share on other sites More sharing options...
Ficm Posted July 8, 2013 Share Posted July 8, 2013 Hey guys, figured ill post some more 6.7L EGR cooler failure pictures. We have done multiple egr cooler repairs on fleet municipal pick up trucks used in street operations, I take it they idle a lot. Observations during repair were bent egr bypass valve doors and for some reason second half of cooler plugs up. Is the egr cooler setup maybe to effective at times... Quote Link to comment Share on other sites More sharing options...
lmorris Posted July 8, 2013 Share Posted July 8, 2013 I get to attack my very first one tomorrow. But this one did set a P2457 during KOER. If you can get your hand over the intake manifold to get at the EBP tube, don't remove the upper intake. The cooler slides out with it in place. I am seriously considering trying to leave the EBP tube attached to the up pipe on my next one. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted July 8, 2013 Share Posted July 8, 2013 If you can get your hand over the intake manifold to get at the EBP tube, don't remove the upper intake. The cooler slides out with it in place. I am seriously considering trying to leave the EBP tube attached to the up pipe on my next one. I leave the intake on too but getting the nut backed off the EP tube bracket is indeed a booger... I don't know if removing the right front tire and wheel well to loosen the fitting is a decent trade-off. Not sure you can get at it without doing that. Quote Link to comment Share on other sites More sharing options...
Chad_Kelsoe Posted July 8, 2013 Share Posted July 8, 2013 I leave the intake and fenderwell in place. I have small enough hands I can reach over in and get the EBP nut loose. My biggest fight is getting the wiring harness off the lower stud on the backside of the cooler. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.