N55 Sensors to replace for preventative maintenance?

BriGuy · 03-29-2019, 08:16 AM

Hey what's up guys,

So I'm doing a Pure 1 and FBO install while knocking out an oil pan, valve cover and OFH gasket replacement along with a complete PM. I have the entire front side of the block exposed and it would be a cake walk to replace every single sensor in there and clean out the vanos solenoids..I just want to know what I would be wasting money on if anything..

Are there any of these cam, coolant, crank sensors etc that don't typically go bad within 100k? My car has 51k and I'm trying to keep from digging into it for around another 50k. All of the usual stuff is already getting replaced.

Thanks! - Brian

philgli · 03-29-2019, 11:59 AM

you could do your oil level sensor while you are doing your pan...

but really just wanted to say - very impressed by the size of you undertaking. do you have a lift or doing it on jackstands?

BriGuy · 03-29-2019, 12:29 PM

Quote:

Originally Posted by philgli

you could do your oil level sensor while you are doing your pan...

This is one I can't justify, its so easily accessible that it just doesn't make sense to chock it down as a PM item.

Quote:

Originally Posted by philgli

but really just wanted to say - very impressed by the size of you undertaking. do you have a lift or doing it on jackstands?

I'm rocking good quality jack stands paired with a good creeper, its not even a hassle. A lift is definitely in my future though.. I'm just a couple of years off from having the ceiling clearance.

Back on-topic, I ended up replacing just about everything:

-Coolant temp sensor
-Oil temp sensor
-(2) Cam sensors
-Knock/Ping sensor
-Crank sensor
-MAP sensor

Should be running pretty smooth.

philgli · 03-29-2019, 01:10 PM

Quote:

Originally Posted by BriGuy

This is one I can't justify, its so easily accessible that it just doesn't make sense to chock it down as a PM item.

I'm rocking good quality jack stands paired with a good creeper, its not even a hassle. A lift is definitely in my future though.. I'm just a couple of years off from having the ceiling clearance.

Back on-topic, I ended up replacing just about everything:

-Coolant temp sensor
-Oil temp sensor
-(2) Cam sensors
-Knock/Ping sensor
-Crank sensor
-MAP sensor

Should be running pretty smooth.

between the fresh gaskets and all those sensors, i bet you will hit 100k with no problems. but you will be going PS2 before that i bet

BriGuy · 03-29-2019, 01:39 PM

Quote:

Originally Posted by philgli

between the fresh gaskets and all those sensors, i bet you will hit 100k with no problems. but you will be going PS2 before that i bet

Haha nah, I'm sticking with this setup until its retired from DD status..then its either a built engine with a single snail or maybe an LS swap. We'll see.

ferocity02 · 03-29-2019, 02:59 PM

O2 sensors are just about the only ones I would replace preemptively.

BriGuy · 03-29-2019, 03:09 PM

New pre-cat O2 is going in with the catless downpipe and the rear is being replaced with a sim.

DiFFv1 · 04-12-2019, 11:10 AM

Quote:

Originally Posted by BriGuy

New pre-cat O2 is going in with the catless downpipe and the rear is being replaced with a sim.

Spark Plug non foulers in rear o2?

Ozzie335i · 04-12-2019, 02:18 PM

While you have your oil pan off, dare I suggest a new set of rod bearings?

Speedy_12139 · 04-13-2019, 09:42 AM

Quote:

Originally Posted by Ozzie335i

While you have your oil pan off, dare I suggest a new set of rod bearings?

It's the cheapest insurance the op could ever buy

03-29-2019, 08:16 AM	#1
BriGuy New Member 0 Rep 8 Posts Drives: '13 X1 35i - Pure Stage 1/FBO Join Date: Apr 2018 Location: Annapolis, MD iTrader: (0)	N55 Sensors to replace for preventative maintenance? Hey what's up guys, So I'm doing a Pure 1 and FBO install while knocking out an oil pan, valve cover and OFH gasket replacement along with a complete PM. I have the entire front side of the block exposed and it would be a cake walk to replace every single sensor in there and clean out the vanos solenoids..I just want to know what I would be wasting money on if anything.. Are there any of these cam, coolant, crank sensors etc that don't typically go bad within 100k? My car has 51k and I'm trying to keep from digging into it for around another 50k. All of the usual stuff is already getting replaced. Thanks! - Brian
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03-29-2019, 11:59 AM	#2
philgli Lieutenant 69 Rep 491 Posts Drives: 2011 AW E92 Msport Join Date: May 2012 Location: Georgia iTrader: (0)	you could do your oil level sensor while you are doing your pan... but really just wanted to say - very impressed by the size of you undertaking. do you have a lift or doing it on jackstands? __________________ 2011 N55 e92 Msport -Alpine White AT MHD Stage 2+, ARM 5" stepped I/C, PPK (coded over), Cobb charge pipe, gutted Xi downpipe, BMS intake, ARM I/C hose upgrade, PE mod, ST coilovers, 18x9 Apex ARC8
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03-29-2019, 02:59 PM	#6
ferocity02 Colonel 530 Rep 2,083 Posts Drives: 2013 135is Join Date: May 2014 Location: USA iTrader: (8)	O2 sensors are just about the only ones I would replace preemptively. __________________ 2013 135is DCT Carbon Black Metallic
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03-29-2019, 03:09 PM	#7
BriGuy New Member 0 Rep 8 Posts Drives: '13 X1 35i - Pure Stage 1/FBO Join Date: Apr 2018 Location: Annapolis, MD iTrader: (0)	New pre-cat O2 is going in with the catless downpipe and the rear is being replaced with a sim.
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04-12-2019, 02:18 PM	#9
Ozzie335i Lieutenant Colonel 659 Rep 1,525 Posts Drives: 2011 335i Join Date: Aug 2014 Location: DFW iTrader: (1)	While you have your oil pan off, dare I suggest a new set of rod bearings?
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