EGT temps on highway
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Elder User
Joined: Dec 2006
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From: germantown, WI
EGT temps on highway
lately i have been noticing that my trucks temps are alot higher than they used to be and thinking that i mite have leaky up-pipes. im running about 600-700* while on the highway doin 75mph and that post turbo i think those numbers are quite high any suggestions would be great!
Senior User
Joined: Nov 2006
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Mine is PRE turbo & runs 590-610 empty cruising on flat highway. I think a POST turbo gauge should read approx 50-100 lower but not 100% sure about that. If yours is reading higher than normal you might want to check your air filter, I noticed my egts were starting to creep up a few & found my pre filter on my AFE clogged with some kind of fuzz. Cleaned it & egts went back to normal.
Lead Driver
Joined: May 2007
Posts: 5,613
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From: Flagstaff, Arizona
My boost level is usually around 4psi while cruising on the highway, egt's around 600*......but I live at 7000ft elevation, tends to cause a little higher numbers.
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Lead Driver
Joined: May 2007
Posts: 5,613
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From: Flagstaff, Arizona
I just re-read your original post. Those number are fairly high for POST turbo readings. If I'm correct.....I think pre and post numbers are usually 2-300* different. This would put you at 900-1000 if you had a pre-turbo probe. That's pretty high, looks like ya might have some leaks......
Post Fiend
Joined: Dec 2002
Posts: 6,245
Likes: 1
From: IL, USA
May I ask why you run the thermocouple post turbo?
I would recommend moving the thermocouple pre turbo.
A few years ago I moved mine back and forth to compare since one of my exhaust systems came with the bung on the downpipe. It was anywhere from 0-400* difference between the two depending on the load on the motor. Also, pre turbo reacts much faster than post turbo.
We know what the safe max. pre turbo temps are......hard to set a safe post turbo max since it varies based on load.
I would recommend moving the thermocouple pre turbo.
A few years ago I moved mine back and forth to compare since one of my exhaust systems came with the bung on the downpipe. It was anywhere from 0-400* difference between the two depending on the load on the motor. Also, pre turbo reacts much faster than post turbo.
We know what the safe max. pre turbo temps are......hard to set a safe post turbo max since it varies based on load.
Posting Guru
Joined: Oct 2007
Posts: 2,225
Likes: 1
From: Farmington, Minnesota
May I ask why you run the thermocouple post turbo?
I would recommend moving the thermocouple pre turbo.
A few years ago I moved mine back and forth to compare since one of. my exhaust systems came with the bung on the downpipe. It was anywhere from 0-400* difference between the two depending on the load on the motor. Also, pre turbo reacts much faster than post turbo.
We know what the safe max. pre turbo temps are......hard to set a safe post turbo max since it varies based on load.
I would recommend moving the thermocouple pre turbo.
A few years ago I moved mine back and forth to compare since one of. my exhaust systems came with the bung on the downpipe. It was anywhere from 0-400* difference between the two depending on the load on the motor. Also, pre turbo reacts much faster than post turbo.
We know what the safe max. pre turbo temps are......hard to set a safe post turbo max since it varies based on load.
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