DDEC Alert/Check Engine Light - Printable Version

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+--- Thread: DDEC Alert/Check Engine Light (/showthread.php?tid=6879)

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DDEC Alert/Check Engine Light - Deper10 - 07-18-2022

This past week while driving back from Oklahoma, I had an alert come on the DDEC monitor "fuel temp circuit high" and check engine yellow light flash on. This was intermittent and all gauges looked fine, oil, coolant, etc. It was over 100 degrees outside and I had been driving at 60+ mph for around five hrs before it started. When the coach starts out in the morning, it takes about an hour before coming on again. I called Newell and was told it is probably a faulty sensor and as long as the coach was operating normally there was nothing to worry about for the remaining drive but to change it out or find a Detroit service center to do it. I believe it is located at the bottom of the Davco fuel filter. There are two sensors there, I believe one is the temp and the other a heater element, not sure. I have tried to research this online but not having much luck. Has anyone replaced the the fuel temp sensor, if so any details.
Thanks
Dario Perini
Coach #581, 2001 45'8"

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RE: DDEC Alert/Check Engine Light - Latitude 28 - 07-18-2022

Dario,
Check this out...http://www.detroitdieselengines.info/series-60/fuel-system/series-60-fuel-temperature-sensor.html.

Wondering out loud and given what this excerpt stated about fuel temp is used to calculate fuel mileage.  Did you see your fuel mileage change?

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RE: DDEC Alert/Check Engine Light - Deper10 - 07-18-2022

Thanks Steve, I did not see any change in mileage, but that could be a result of my slowing down as a precaution.

Dario Perini
#581

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