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egt's runnig hotter than normal (even on stock)

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Old 05-18-2008, 09:27 AM
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Question egt's runnig hotter than normal (even on stock)

My egt's are running about 200 deg higher than they normally do under normal driving conditions its also taking longer to cool down to 400 before i shut her down all other guages are reading normal anybody got any ideas.
Old 05-18-2008, 09:41 AM
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Boost leak or EGT probe may be going bad.
Old 05-18-2008, 12:46 PM
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thanks for the advice im gonna pull the probe and look at it i dont think its a boost leak i cant hear anything that sounds like a leak and the boost will still hit about 28 psi with that stock charger
Old 05-18-2008, 12:52 PM
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Not sure how long you've had the truck / guages...if either is relatively new, could just be the ambient temp change. My EGT's are definately up as it's 100* here in Phoenix....hotter egt's when accelerating and longer wait for shutdown...cruise isnt too much higher...definately a big change between winter / summer in my area.
Old 05-18-2008, 04:07 PM
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Originally Posted by 05ChainSmoker
My egt's are running about 200 deg higher than they normally do under normal driving conditions its also taking longer to cool down to 400 before i shut her down all other guages are reading normal anybody got any ideas.
What transmission do you have? any upgrades?
Old 05-18-2008, 07:47 PM
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yeah the temp has def changed in the past few weeks it was in the 90's today that could be the prob i bought the truck new in 05 and had the gauges about 2 months after i bought it. the tranny in a full billet hts i just put in last weekend
Old 05-19-2008, 01:01 AM
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It's prob the weather then...try to get an early morning start when it's cooler...and you should notice a drop....at least you could eliminate any other variable
Old 05-19-2008, 01:07 AM
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it could be the new tranny......now that it actually is loading the engine up.

Or the bad news could be an injector sticking open.
Old 05-19-2008, 08:44 PM
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what if it is a injector i was planning on get some flux's anyway but i guess there is a big waiting list on them or so i have been told should i not drive the truck till i get injectors if that is the prob
Old 05-19-2008, 09:22 PM
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air filter restrictions would also cause higher egt's
Old 05-20-2008, 02:08 AM
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That is typical of a boost leak.... Higher EGT's and poorer fuel mileage.
Old 05-20-2008, 08:52 AM
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Originally Posted by 05ChainSmoker
thanks for the advice im gonna pull the probe and look at it i dont think its a boost leak i cant hear anything that sounds like a leak and the boost will still hit about 28 psi with that stock charger
You probably wouldn't be able to hear a small boost leak because the engine makes a lot of noise at higher RPM's and boost levels.

28psi is low for max boost on an '05 with a stock charger. You sig says you have a BDTD and an MP-8. You should be seeing over 40psi max with those turned up.
Old 05-20-2008, 12:35 PM
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Air in or out, fuel in or out. Got to be one of those. K.I.S.S!
Old 05-20-2008, 04:29 PM
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Originally Posted by 05ChainSmoker
i was planning on get some flux's anyway but i guess there is a big waiting list on them ........
I got mine back from Don last week. He received them wednesday and shipped them out the following tuesday. Not too bad considering how long people wait for other vendors.
Old 05-20-2008, 07:16 PM
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yeah i thought the boost would be higher to im suppose to get my silverbullet at the end of the week so im not real worried about it what dealer did you use when you did your injectors cause that would be sweet to get them back in a few weeks time.


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