Turbo gas temprature

stiggie · 03-11-2014, 09:18 AM

I would like to know if the turbo gas temperature is regulated or does it just cool down in the intercooler? My engine seems to run too hot. I replaced the thermostat but its still the same. Is the cooling system supposed to be under high pressure because I used to drive it and open the cooler bottle but now its to hot to open. The new thermostat is also leaking. I think its because the pressure is too high in the cooling system.

floydarogers · 03-11-2014, 09:40 AM

I'm sorry, but your post doesn't make a lot of sense.

The turbo exhaust goes out the tailpipes; it doesn't go through the intercooler.

The intake air charge that is compressed by the turbo's compressor goes through the intercooler.

The water temperature in these cars is electronically regulated; changing the thermostat doesn't do anything (unless it was broken.) The engine computer runs the temperature hot to gain thermal efficiency. All automobile cooling systems are pressurized.

If you have an EGR, it's cooled by the water, but the radiator is sized to accomodate that.

dixy2k · 03-11-2014, 09:41 AM

The coolant temperature in my car normally runs 190F-200F. During regeneration it gets up to 205F.
EGT varies depending on how you drive and what speed/RPM you are using. 380F-630F, and 1170F during regeneration.

Hoooper · 03-11-2014, 09:59 AM

the system is supposed to be under pressure when hot, if you were driving it and then opening the bottle (why would you do that anyway?) you might have caused it to get low on coolant and now its overheating.

The boosted air, which is what goes through the intercooler, is "regulated" by the intercooler and measured by a temperature sensor. I dont think anybody has experience with it but it seems possible that if the air temp is very high the engine will go to limp mode and slow you down. As far as I know this has not happened to anyone yet who has posted about it. If you have that problem you probably have a turbo that is toast.

Since you have been opening the coolant bottle and now have replaced the thermostat you may have air in the system, which would cause it to overheat. The normal method for getting air out would be to run the car pointed uphill while on a slight hill with the radiator cap off, or whatever the highest point that can be opened is, and just run it until it stops bubbling, then make sure its full

stiggie · 03-11-2014, 10:33 AM

Quote:

Originally Posted by floydarogers

I'm sorry, but your post doesn't make a lot of sense.

The turbo exhaust goes out the tailpipes; it doesn't go through the intercooler.

The intake air charge that is compressed by the turbo's compressor goes through the intercooler.

The water temperature in these cars is electronically regulated; changing the thermostat doesn't do anything (unless it was broken.) The engine computer runs the temperature hot to gain thermal efficiency. All automobile cooling systems are pressurized.

If you have an EGR, it's cooled by the water, but the radiator is sized to accomodate that.

How does the EGR work and what does it do?

Puerto Rican 335d · 03-11-2014, 10:41 AM

EGR!!! thats our achilles tendon cant wait to remove the DAMN thing!!!! Good question it recirculates gases into engine correct me amigos I get the creeps everytime I mention EGR!!

floydarogers · 03-11-2014, 12:01 PM

Quote:

Originally Posted by stiggie

How does the EGR work and what does it do?

http://en.wikipedia.org/wiki/Exhaust_gas_recirculation

stiggie · 03-12-2014, 08:21 AM

Quote:

Originally Posted by floydarogers

http://en.wikipedia.org/wiki/Exhaust_gas_recirculation

Ok I did a bit of research I understand the turbo and egr now. Im trying to upload a photo hope it works. What is the square stainless thing in my picture? Its not my car its a pic from the internet but looks the same as mine.

Puerto Rican 335d · 03-12-2014, 08:36 AM

yep amigo stiggie that our achilles tendon

floydarogers · 03-12-2014, 08:40 AM

Quote:

Originally Posted by stiggie

Ok I did a bit of research I understand the turbo and egr now. Im trying to upload a photo hope it works. What is the square stainless thing in my picture? Its not my car its a pic from the internet but looks the same as mine.

That's the EGR cooler.

dixy2k · 03-12-2014, 08:41 AM

egr cooler

floydarogers · 03-12-2014, 08:55 AM

Quote:

Originally Posted by floydarogers

That's the EGR cooler.

Quote:

Originally Posted by dixy2k

egr cooler

We should be specific and say "HIGH PRESSURE" egr cooler.

stiggie · 03-12-2014, 08:56 AM

Quote:

Originally Posted by Puerto Rican 335d

yep amigo stiggie that our achilles tendon

If my egr is not working properly that would explain the increase in temperature. If the gas don't get back into the engine the gasses are too rich and creates a higher temperature when it burns? What can cause the egr not to work properly?

stiggie · 03-12-2014, 08:58 AM

Where is the egr valve then?

AWD Addict · 03-12-2014, 08:58 AM

stiggie · 03-12-2014, 09:05 AM

Looks like im opening a can of worms

stiggie · 03-12-2014, 09:08 AM

Quote:

Originally Posted by AWD Addict

I changed them yesterday

Brad335d · 03-12-2014, 09:50 AM

Did I miss something in one of your posts, where exactly did you arrive at the determination that the engine is running "too hot"?

What is you engine coolant temperature during normal driving conditions?

What is the oil temperature during normal driving?

You may need to buy a scanner or scan software for a laptop that receives live data, if you don't already have one. Hook up the scan tool and look at the readings then compare them to the factory specified range.

stiggie · 03-12-2014, 10:33 AM

Quote:

Originally Posted by Brad335d

Did I miss something in one of your posts, where exactly did you arrive at the determination that the engine is running "too hot"?

What is you engine coolant temperature during normal driving conditions?

What is the oil temperature during normal driving?

You may need to buy a scanner or scan software for a laptop that receives live data, if you don't already have one. Hook up the scan tool and look at the readings then compare them to the factory specified range.

I say its running too hot because the coolant is blowing out at the bottle and also at the thermostat. It doesn't have a gauge and I don't have diagnostic tools. I took it to the dealer and they did diagnostics on it. They said their is errors on the thermostat and all the glow plugs. I replaced the thermostat but not the glow plugs because it has no issues starting or smoking. Its not running too hot for it to go into limp mode but its consistant. Im not sure what the temperature is ill find out if the dealer checked it. It made no difference after replacing the thermostat.

stiggie · 03-12-2014, 10:37 AM

I took of the boost pipe and looked into the valve now. Doesn't look bad just a bit of oil but otherwise very clean.

Hoooper · 03-12-2014, 12:04 PM

blows out of the bottle, is that only when you open it or is that during running?

stiggie · 03-12-2014, 12:18 PM

Quote:

Originally Posted by Hoooper

blows out of the bottle, is that only when you open it or is that during running?

When im driving. Its not a lot I wipe the bottle clean with a cloth and when I open the bonnet again after driving a while you can see the marks on the bottle and the level of the coolant is lower. It uses about half a litre on 1000km. Its not a lot but its not like it should be.

03-11-2014, 09:18 AM	#1
stiggie Private 5 Rep 54 Posts Drives: E90 330D Join Date: Oct 2013 Location: South Africa iTrader: (0) Garage List 2007 330d [0.00]	Turbo gas temprature I would like to know if the turbo gas temperature is regulated or does it just cool down in the intercooler? My engine seems to run too hot. I replaced the thermostat but its still the same. Is the cooling system supposed to be under high pressure because I used to drive it and open the cooler bottle but now its to hot to open. The new thermostat is also leaking. I think its because the pressure is too high in the cooling system.
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03-11-2014, 09:40 AM	#2
floydarogers Curmudgeon and Pedant 690 Rep 3,489 Posts Drives: 2010 335d, 2014 328d Join Date: Nov 2012 Location: Bellevue, WA iTrader: (0)	I'm sorry, but your post doesn't make a lot of sense. The turbo exhaust goes out the tailpipes; it doesn't go through the intercooler. The intake air charge that is compressed by the turbo's compressor goes through the intercooler. The water temperature in these cars is electronically regulated; changing the thermostat doesn't do anything (unless it was broken.) The engine computer runs the temperature hot to gain thermal efficiency. All automobile cooling systems are pressurized. If you have an EGR, it's cooled by the water, but the radiator is sized to accomodate that.
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03-11-2014, 09:41 AM	#3
dixy2k Major 88 Rep 1,152 Posts Drives: 335d Join Date: Nov 2009 Location: CA iTrader: (0)	The coolant temperature in my car normally runs 190F-200F. During regeneration it gets up to 205F. EGT varies depending on how you drive and what speed/RPM you are using. 380F-630F, and 1170F during regeneration.
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03-11-2014, 09:59 AM	#4
Hoooper Colonel 213 Rep 2,210 Posts Drives: 335D Join Date: Jun 2013 Location: Petaluma, CA iTrader: (0)	the system is supposed to be under pressure when hot, if you were driving it and then opening the bottle (why would you do that anyway?) you might have caused it to get low on coolant and now its overheating. The boosted air, which is what goes through the intercooler, is "regulated" by the intercooler and measured by a temperature sensor. I dont think anybody has experience with it but it seems possible that if the air temp is very high the engine will go to limp mode and slow you down. As far as I know this has not happened to anyone yet who has posted about it. If you have that problem you probably have a turbo that is toast. Since you have been opening the coolant bottle and now have replaced the thermostat you may have air in the system, which would cause it to overheat. The normal method for getting air out would be to run the car pointed uphill while on a slight hill with the radiator cap off, or whatever the highest point that can be opened is, and just run it until it stops bubbling, then make sure its full
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03-11-2014, 10:41 AM	#6
Puerto Rican 335d Brigadier General 229 Rep 3,489 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	EGR!!! thats our achilles tendon cant wait to remove the DAMN thing!!!! Good question it recirculates gases into engine correct me amigos I get the creeps everytime I mention EGR!! __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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03-12-2014, 08:36 AM	#9
Puerto Rican 335d Brigadier General 229 Rep 3,489 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	yep amigo stiggie that our achilles tendon __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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03-12-2014, 08:41 AM	#11
dixy2k Major 88 Rep 1,152 Posts Drives: 335d Join Date: Nov 2009 Location: CA iTrader: (0)	egr cooler
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03-12-2014, 08:58 AM	#14
stiggie Private 5 Rep 54 Posts Drives: E90 330D Join Date: Oct 2013 Location: South Africa iTrader: (0) Garage List 2007 330d [0.00]	Where is the egr valve then?
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03-12-2014, 08:58 AM	#15
AWD Addict Chief Executive 300 Rep 2,886 Posts Drives: 2008 335xi 6spd Coupe Join Date: Dec 2007 Location: Boston iTrader: (1) Garage List 2008 335xi [0.00]
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03-12-2014, 09:05 AM	#16
stiggie Private 5 Rep 54 Posts Drives: E90 330D Join Date: Oct 2013 Location: South Africa iTrader: (0) Garage List 2007 330d [0.00]	Looks like im opening a can of worms
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03-12-2014, 09:50 AM	#18
Brad335d Oil Burner 26 Rep 231 Posts Drives: 2011 BMW 335d Join Date: Nov 2009 Location: Atlanta, GA iTrader: (0) Garage List 2014 Volvo XC60 T6 AWD [0.00] 2011 BMW 335d [0.00] 2007 Ford Shelby GT500 [0.00]	Did I miss something in one of your posts, where exactly did you arrive at the determination that the engine is running "too hot"? What is you engine coolant temperature during normal driving conditions? What is the oil temperature during normal driving? You may need to buy a scanner or scan software for a laptop that receives live data, if you don't already have one. Hook up the scan tool and look at the readings then compare them to the factory specified range. __________________ '11 BMW 335d Sport -JBD '07 Shelby GT500 -Not Stock
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03-12-2014, 10:37 AM	#20
stiggie Private 5 Rep 54 Posts Drives: E90 330D Join Date: Oct 2013 Location: South Africa iTrader: (0) Garage List 2007 330d [0.00]	I took of the boost pipe and looked into the valve now. Doesn't look bad just a bit of oil but otherwise very clean.
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03-12-2014, 12:04 PM	#21
Hoooper Colonel 213 Rep 2,210 Posts Drives: 335D Join Date: Jun 2013 Location: Petaluma, CA iTrader: (0)	blows out of the bottle, is that only when you open it or is that during running?
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