ISB 6.7 cummins check engine light issue
2008 Tiffin FRED 6.7 ISB. Filled up with fuel at a PETRO in SpartansburgSC and drove towards New Bern when I noticed a slight shutter in the Motor Home while shifting. Drove back to Atlanta and ck eng...
Forum Discussion
We had a similar issue last year. Check engine light came on while sitting in heavy traffic for a extended time. Then went off and back on with no reason that I could figure out. It ended up being a exhaust gas temp sensor that failed. I also changed the fuel filters, but that made no difference. Have you changed the air filter recently. I have been told that can trigger the light for no reason as well.
