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BrokenBus
Active Member
10 Posts |
 Posted - 05/17/2016 : 07:33:52 AM
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We have an 08 BlueBird with the Cummins that has 2 codes:
- 2387 Actuator control circuit for the variable geometry turbine VGT. Incorrect reply from mechanical system. Firmly seated or incorrectly adjusted.
- 2637 Diesel oxidation or catalyst. Fault, component blocked or clogged.
It seems to run fine, but the engine light is flashing. We removed the DPF and cleaned it and reinstalled. It was semi-dirty, but we saw no change after cleaning it. We removed the actuator from the turbo, but my techs are new to this VGT. We recalibrated it, but saw no change. Any advice would be appreciated. |
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krmvcs
Advanced Member
362 Posts |
Posted - 05/17/2016 : 08:04:06 AM
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| do you have a quickserve account? |
-Ken- |
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BrokenBus
Active Member
10 Posts |
Posted - 05/17/2016 : 08:16:01 AM
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| No, it looks like the username and password we have is no longer good. I've been here about a year, and am working with accounts created by previous managers. |
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krmvcs
Advanced Member
362 Posts |
Posted - 05/17/2016 : 08:19:04 AM
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| just make a new one. quick and easy. itll give you personally 5 engine serial numbers for free i think. |
-Ken- |
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Fastback
Top Member
1500 Posts |
Posted - 05/17/2016 : 08:41:00 AM
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| Did you remove and inspect the DOC? |
Why yes, the ORIGinal CHARGER is a Fastback |
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Thomasbus24
Administrator
USA
4544 Posts |
Posted - 05/17/2016 : 08:43:46 AM
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| I second the DOC. We've had codes point to DPF on two of the oldest 6.7's and it was actually a dirty DOC, which was inhibiting the engines ability to heat the DPF properly. |
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partsman_ba
Administrator
United States
377 Posts |
Posted - 05/17/2016 : 09:44:23 AM
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| Are these both active codes? Even after the VGT recal? You've probably had (or still have) a VGT problem which has kept the regen from happening. |
"Growing old is mandatory. Growing up is optional." |
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BrokenBus
Active Member
10 Posts |
Posted - 05/17/2016 : 10:00:35 AM
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Yes they are active, and pardon the ignorance but what is the DOC? (EDIT: MY BRAIN WASN'T WORKING AFTER LUNCH AND I REALIZE YOU ARE TALKING ABOUT THE DIESEL OXIDATION CATALYST). Yes, we can see right through it.
Also, thanks for the advice on Cummins Quickserve. It gave me some good info as a starting point to keep diagnosing. I'm from the automotive world and am having to transition to the bus world. |
Edited by - BrokenBus on 05/17/2016 10:03:52 AM |
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RonF
Top Member
867 Posts |
Posted - 05/17/2016 : 10:41:22 AM
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| We just had all of our 2013 IC's with MaxxForce 7's DPF's replaced for excessive black smoke, (under warranty) All of the internals were broken to pieces. |
US Army retired CMBT |
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partsman_ba
Administrator
United States
377 Posts |
Posted - 05/17/2016 : 11:14:39 AM
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| Run the trouble tree for the 2387 code first. We've had a couple of VGTs fail on our buses. |
"Growing old is mandatory. Growing up is optional." |
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BrokenBus
Active Member
10 Posts |
Posted - 05/17/2016 : 11:19:22 AM
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| Upon closer inspection, with the actuator off we can only move the 'lever' on the turbo part way til it binds up. We can bump it lightly and it will go all the way. Is there a way to clean the internals of the turbo, or is it toast and time for a replacement? |
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RonF
Top Member
867 Posts |
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krmvcs
Advanced Member
362 Posts |
Posted - 05/17/2016 : 12:15:24 PM
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| quickserve is your best friend. ive found that the "shop talk" section at the bottom of the code explanation page really helpful too. its also gives you a complete parts breakdown based on engine serial number. |
-Ken- |
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BrokenBus
Active Member
10 Posts |
Posted - 05/17/2016 : 1:19:18 PM
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| Thanks guys! We pulled the turbo and will be disassembling tomorrow and cleaning. I'll post updates along the way. |
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BrokenBus
Active Member
10 Posts |
Posted - 05/18/2016 : 05:43:44 AM
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We pulled the housing apart and cleaned. It moves in and out as designed when it is disassembled, but when we stab it back together, it binds up. Is there a certain way to line it up perfectly when reassembling the turbo housing? We lined up the dowel pin of course, but the vanes are what I'm worried aren't totally fitting together if that makes sense.
UPDATE: THE FINS/VANES ON THE VGT ASSEMBLY ARE DISTORTED AND BINDING THEMSELVES (VERIFIED WITH PAINT MARKER). A NEW TURBO IS ON ORDER. ONLY OTHER OPTION WAS TO CLEARANCE OUT THE SLOTS THEY FIT INTO, BUT THAT ISN'T "FIXING" IT. |
Edited by - BrokenBus on 05/18/2016 07:49:17 AM |
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partsman_ba
Administrator
United States
377 Posts |
Posted - 05/19/2016 : 4:54:23 PM
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| Glad you went for the full meal deal. I've got an installed VGT sitting on the shelf that didn't fix this same problem. |
"Growing old is mandatory. Growing up is optional." |
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Topic |
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Cummins 6.7 codes
