cleaning the MAP sensor

modern_citizen24 · 08-11-2015, 11:37 AM

Read about this in an old thread and thought it might help with my code. Any experiences or thoughts about cleaning with swtich cleaner or electrical parts cleaner?

ferocity02 · 08-11-2015, 11:47 AM

I just cleaned mine this morning. I used MAF sensor cleaner. Its similar to brake cleaner (high pressure aerosol can) but it's supposed to be safe for MAF sensors, so I figured it would be okay for the TMAP sensor. Haven't installed it to make sure it worked.

I believe there are 2 TMAP sensors, in the chargepipe and in the intake manifold. Mine in the intake was particularly dirty.

modern_citizen24 · 08-11-2015, 12:10 PM

I heard switch cleaner works good. Im getting the code p119a after i cleaned out my intake but im not sure if its safe to drive with it like that. It drives well i just hate seeing that ses light

unrealii · 08-11-2015, 01:46 PM

TMAP measures pressure. I dont know how cleaning it would help, especially that it will just get dirty again with all the oil in the air.

modern_citizen24 · 08-11-2015, 01:54 PM

Quote:

Originally Posted by unrealii

TMAP measures pressure. I dont know how cleaning it would help, especially that it will just get dirty again with all the oil in the air.

Ive been reading up and i guess there are two on my car n54. One at the intake and one on charge pipe please correct me if im wrong

ferocity02 · 08-11-2015, 02:01 PM

Quote:

Originally Posted by unrealii

TMAP measures pressure. I dont know how cleaning it would help, especially that it will just get dirty again with all the oil in the air.

The concern might be more related to a chunk of something getting lodged in the sensor passage itself. While I haven't looked at our sensors in detail, its usually a pretty small hole that leads to the actual part that does the measuring. Mine came out not only with oil residue on it, but chunks of oil crud, kind of like that that collects on the valves.

It also measures temperature, so oil/grease on the sensor could affect its accuracy and response time.

modern_citizen24 · 08-11-2015, 03:42 PM

Thank you for the response. I picked up some electric parts cleaner and im going to clean the connections tomorrow morning. Im thinking maybe when i was cleaning the intakes some gunk got on the connector itself and thats whats causing the code. Will update tomorrow. Is it perfectly fine to spray the connector while the battery is hooked up or should i unplug?

08-11-2015, 11:37 AM	#1
modern_citizen24 Private First Class 15 Rep 157 Posts Drives: stock 2007 335i auto tran Join Date: Jul 2015 Location: deland iTrader: (0)	cleaning the MAP sensor Read about this in an old thread and thought it might help with my code. Any experiences or thoughts about cleaning with swtich cleaner or electrical parts cleaner?
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08-11-2015, 11:47 AM	#2
ferocity02 Colonel 530 Rep 2,083 Posts Drives: 2013 135is Join Date: May 2014 Location: USA iTrader: (8)	I just cleaned mine this morning. I used MAF sensor cleaner. Its similar to brake cleaner (high pressure aerosol can) but it's supposed to be safe for MAF sensors, so I figured it would be okay for the TMAP sensor. Haven't installed it to make sure it worked. I believe there are 2 TMAP sensors, in the chargepipe and in the intake manifold. Mine in the intake was particularly dirty. __________________ 2013 135is DCT Carbon Black Metallic
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08-11-2015, 12:10 PM	#3
modern_citizen24 Private First Class 15 Rep 157 Posts Drives: stock 2007 335i auto tran Join Date: Jul 2015 Location: deland iTrader: (0)	I heard switch cleaner works good. Im getting the code p119a after i cleaned out my intake but im not sure if its safe to drive with it like that. It drives well i just hate seeing that ses light
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08-11-2015, 01:46 PM	#4
unrealii Captain 75 Rep 630 Posts Drives: '09 335 E93 6MT Join Date: Mar 2011 Location: Socal iTrader: (3) Garage List 2002 Toyota 4Runner [0.00] 2009 BMW 335I [10.00]	TMAP measures pressure. I dont know how cleaning it would help, especially that it will just get dirty again with all the oil in the air.
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08-11-2015, 03:42 PM	#7
modern_citizen24 Private First Class 15 Rep 157 Posts Drives: stock 2007 335i auto tran Join Date: Jul 2015 Location: deland iTrader: (0)	Thank you for the response. I picked up some electric parts cleaner and im going to clean the connections tomorrow morning. Im thinking maybe when i was cleaning the intakes some gunk got on the connector itself and thats whats causing the code. Will update tomorrow. Is it perfectly fine to spray the connector while the battery is hooked up or should i unplug?
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