Air intake temperature sensor covered in oil?

Mboon · 07-20-2017, 12:41 PM

Hi all,
I removed my air intake temp sensor and it was covered in oil? I am guessing this is not Right?

Any idea where the oil is coming from? I get some blue smoke on start-up but clears after 30 seconds

Thanks all

n57 3.0td 2010

ChawenHalo · 07-21-2017, 02:31 AM

Quote:

Originally Posted by Mboon

Hi all,
I removed my air intake temp sensor and it was covered in oil? I am guessing this is not Right?

Any idea where the oil is coming from? I get some blue smoke on start-up but clears after 30 seconds

Thanks all

n57 3.0td 2010

Is that the one in the tube by the intake your right side of the engine looking at it. its like a little black glass drop surrounded by a tiny yellow plastic cage?

Mboon · 07-21-2017, 06:27 AM

I think so yes. It plugs into a black plastic pipe on the right hand side of the engine. Has 1 cable going to it. Covered in oil. Looking around it seems s must of oil is fine but mine looks more than this?

Mboon · 07-25-2017, 07:37 AM

Bump

ChawenHalo · 08-18-2017, 01:38 AM

Quote:

Originally Posted by Mboon

I think so yes. It plugs into a black plastic pipe on the right hand side of the engine. Has 1 cable going to it. Covered in oil. Looking around it seems s must of oil is fine but mine looks more than this?

Same here. mine was gunky; Cleaned it with contact spray and it made zero difference. The car did however notice it had been unplugged and pinged a notice on the report.

Mboon · 08-18-2017, 03:02 AM

I replaced mine and again, no difference. I cleared the codes but they came straight back. Very odd

Andy198712 · 08-18-2017, 05:40 AM

Are there adaptations for the map sensor? Clean and reset possibly?

ChawenHalo · 08-18-2017, 06:43 AM

Quote:

Originally Posted by Mboon

I replaced mine and again, no difference. I cleared the codes but they came straight back. Very odd

Have you had the cars full sofware updated? This includes resetting all the values.I'm starting to think that any DIY problem solving on these complicated engines is pretty much non starter...

Andy198712 · 08-18-2017, 07:02 AM

I brought a foxwel nt510 for that reason

AWSAWS · 08-18-2017, 10:42 AM

If it's anything like a petrol you probably have some re-circulation system going on. Oil from the crank case going back into the inlet.

That's why we fit oil catch cans on the petrol models.

Mboon · 08-19-2017, 04:51 AM

I have seen people mention fitting oil catch cans on the n57 engine? Will this prevent oil in the inlet?

Benskett · 08-20-2017, 04:52 AM

Quote:

Originally Posted by Mboon

I have seen people mention fitting oil catch cans on the n57 engine? Will this prevent oil in the inlet?

Yes. You will still get EGR soot through, but with a decent baffled can it won't mix with oil vapour and in theory save the gunky crap.

07-20-2017, 12:41 PM	#1
Mboon Private 19 Rep 85 Posts Drives: E90 LCI Join Date: Mar 2017 Location: Somerset iTrader: (0)	Air intake temperature sensor covered in oil? Hi all, I removed my air intake temp sensor and it was covered in oil? I am guessing this is not Right? Any idea where the oil is coming from? I get some blue smoke on start-up but clears after 30 seconds Thanks all n57 3.0td 2010
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07-21-2017, 06:27 AM	#3
Mboon Private 19 Rep 85 Posts Drives: E90 LCI Join Date: Mar 2017 Location: Somerset iTrader: (0)	I think so yes. It plugs into a black plastic pipe on the right hand side of the engine. Has 1 cable going to it. Covered in oil. Looking around it seems s must of oil is fine but mine looks more than this?
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07-25-2017, 07:37 AM	#4
Mboon Private 19 Rep 85 Posts Drives: E90 LCI Join Date: Mar 2017 Location: Somerset iTrader: (0)	Bump
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08-18-2017, 03:02 AM	#6
Mboon Private 19 Rep 85 Posts Drives: E90 LCI Join Date: Mar 2017 Location: Somerset iTrader: (0)	I replaced mine and again, no difference. I cleared the codes but they came straight back. Very odd
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08-18-2017, 05:40 AM	#7
Andy198712 Major 145 Rep 1,011 Posts Drives: 2010 E91 325d Join Date: Mar 2017 Location: Cornwall iTrader: (0)	Are there adaptations for the map sensor? Clean and reset possibly?
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08-18-2017, 07:02 AM	#9
Andy198712 Major 145 Rep 1,011 Posts Drives: 2010 E91 325d Join Date: Mar 2017 Location: Cornwall iTrader: (0)	I brought a foxwel nt510 for that reason
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08-18-2017, 10:42 AM	#10
AWSAWS Colonel 283 Rep 2,343 Posts Drives: E92 GC Turbos, FBO, 335i DCT Join Date: Nov 2012 Location: Valhalla iTrader: (0)	If it's anything like a petrol you probably have some re-circulation system going on. Oil from the crank case going back into the inlet. That's why we fit oil catch cans on the petrol models. __________________ GC Turbos, FBO, JB4, DCT, Port Meth injection, BMS Charge Pipe, NGK plugs. EBC brakes and pads, LED Angel lights, LED foglights, LCI rears OCC, Braided brake lines. Custom Diff Lockdown Kit, VTT inlets, TMAP, stage 2+ fuel pump 11.79@119mph (stock turbos) 11.74@129mph (GC Turbos)
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08-19-2017, 04:51 AM	#11
Mboon Private 19 Rep 85 Posts Drives: E90 LCI Join Date: Mar 2017 Location: Somerset iTrader: (0)	I have seen people mention fitting oil catch cans on the n57 engine? Will this prevent oil in the inlet?
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