Underhood Heat

cbjr · 07-06-2014, 07:25 AM

Is the underhood temperature supposed to be extremely hot? I went to go look at something under the hood ~4 hours after running it, and it was still hot to the touch. I don't drive the car hard right now at all, so I'm guessing it was in the middle of a regen cycle, but it just seems crazy to me that it would be that hot.

I also took the engine cover off for the first time to look at my EGR area, and noticed oil in that area. Is this common? My guess is it happened after being worked on for an EGR recall or something. Hopefully I can get some history of that from the dealer this week.

DieselRacer · 07-06-2014, 07:40 AM

Mine is hotter than the AZ heat, but I drive it like I stole it... the heat by the turbo is WHOOOOOAAAAA...

skychismo · 07-06-2014, 10:48 AM

Turbos get extremely hot, and these cars have two of them. Was there actual oil residue and build up, or was the EGR just discolored?

dixy2k · 07-06-2014, 02:27 PM

Any turbo car runs hot.
I found a bolt loose on one the EGR pipes, so check everything for yourself.

Hoooper · 07-07-2014, 11:01 AM

totally normal. If I want to work under the hood at all after driving I pop the hood and leave it for a couple hours. Will still be somewhat warm, but popping the hood makes a huge difference in how long it stays hot. Between the hood and the underbody panels the heat is pretty well trapped in there

07-06-2014, 07:25 AM	#1
cbjr New Member 3 Rep 17 Posts Drives: 2009 335d Join Date: May 2014 Location: United States iTrader: (0)	Underhood Heat - Maybe EGR leak too Is the underhood temperature supposed to be extremely hot? I went to go look at something under the hood ~4 hours after running it, and it was still hot to the touch. I don't drive the car hard right now at all, so I'm guessing it was in the middle of a regen cycle, but it just seems crazy to me that it would be that hot. I also took the engine cover off for the first time to look at my EGR area, and noticed oil in that area. Is this common? My guess is it happened after being worked on for an EGR recall or something. Hopefully I can get some history of that from the dealer this week.
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07-06-2014, 07:40 AM	#2
DieselRacer BMW Advanced Diesel, 2011 BMW 335d M sport... 90 Rep 783 Posts Drives: 2011 335d M sport Join Date: Apr 2014 Location: AZ-NV iTrader: (0) Garage List 1965 shelby cobra ford [0.00] 1965 Shelby Cobra [0.00] 2011 BMW 335d M sport [0.00]	Mine is hotter than the AZ heat, but I drive it like I stole it... the heat by the turbo is WHOOOOOAAAAA... __________________ BMW Advanced Diesel, 2011 335d M sport...
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07-06-2014, 10:48 AM	#3
skychismo Private First Class 5 Rep 134 Posts Drives: 2011 335D Join Date: May 2014 Location: United States iTrader: (0)	Turbos get extremely hot, and these cars have two of them. Was there actual oil residue and build up, or was the EGR just discolored?
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07-06-2014, 02:27 PM	#4
dixy2k Major 88 Rep 1,151 Posts Drives: 335d Join Date: Nov 2009 Location: CA iTrader: (0)	Any turbo car runs hot. I found a bolt loose on one the EGR pipes, so check everything for yourself.
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07-07-2014, 11:01 AM	#5
Hoooper Colonel 213 Rep 2,210 Posts Drives: 335D Join Date: Jun 2013 Location: Petaluma, CA iTrader: (0)	totally normal. If I want to work under the hood at all after driving I pop the hood and leave it for a couple hours. Will still be somewhat warm, but popping the hood makes a huge difference in how long it stays hot. Between the hood and the underbody panels the heat is pretty well trapped in there
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