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Old 06-04-2019, 01:37 PM   #1
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Question ISL 8.9L Check Engine code EGR Valve Replacement

Hello all,

For about 6 weeks I've had an intermittent amber Check Engine light. I pulled the following code from my SCANGUAGE:
Quote:
2791*** Engine Exhaust Gas Recirculation 1 Valve 1 Control 1 Desired
percentage of maximum Exhaust Gas Recirculation (EGR) valve 1 opening.*
0% means valve is closed. 100% means maximum valve opening (full gas flow).
FM: 13*** Out of calibration
In speaking with Cummins and others, it is likely that my EGR valve needs to be replaced.

My question is, can I just unbolt the EGR Valve and install a new valve? Or does a new EGR valve require some sort of ECM/ECU recalibration?
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Old 06-09-2019, 11:13 PM   #2
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It must be matched to YOUR specific engine to provide the correct boost level. Yes, it is then a simple swap.
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Old 06-10-2019, 05:04 AM   #3
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Quote:
Originally Posted by BrewE2 View Post
My question is, can I just unbolt the EGR Valve and install a new valve? Or does a new EGR valve require some sort of ECM/ECU recalibration?
You can clean the valve with carburetor cleaner and that will probably fix it. They are notorious for clogging up and sticking.

https://www.google.com/search?q=egr+...hrome&ie=UTF-8
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Old 06-11-2019, 09:12 AM   #4
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Appreciate the two responses.
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Old 06-18-2019, 09:38 AM   #5
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Arrow

Just a follow-up on the status of my check engine light and EGR valve OP.

I purchased a new EGR Valve from eBay $325. I had it installed when I had my annual service done at Total Truck Shop in Spokane, Washington. It was a 30-minute install. No ECU programming required and it appears to have corrected my check engine light problem. YMMV
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