More fuel + lower rpms = lower egt (richer fuel/air ratio means less complete combustion means lower exhaust temps)
Less fuel + higher rpms = higher egt (leaner fuel/air means more complete combustion means higher exhaust temps)
Exhaust Gas Temperature too high?
Discussion in 'Volvo Forum' started by ChromeNut, Jun 29, 2014.
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That's exactly it! When cruising 55-60, temps raise, but when speeds are higher the temp drops. Do you think i-t's an EGR that went bad? It's my first truck, so I'm kinda new in this game, altough, I've been driving quite a bit...
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I doubt his detroit could handle it like the old big cams. Mine would glow in the dark climbing jellico. They just don't make things the way they used to.
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Check the sensor.You can use a temperature gun .
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Volvo guys found a bad sensor.
Lady K Thanks this. -
Do you know what sensor it was? My 07 VNL with a D-12 just started doing the same thing. I'm thinking it's either the sensor or the gauge for the exhaust temp. Everything else seems normal.
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About 39.xx for the ET, one day going the road the needle was over 1500 on that gage, my scan gage showed the same thing. So I new it was the prob, Took about 25 mins to install a new exhaust temperature prob let the motor cool first Lol
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