2004 MC40
I had the 'Check Engine' light on and so I went to the parts store to find out what codes are thrown. I was told the Manifold sensor was bad and so I ordered the part right there on the spot. Took out the old sensor (125k) for the first time and put in the new part. The bolt towards the front went back in about 3/4 of the way and back one went in with no issue.
The light was still on after replacing the part and so return to the store to reset the codes. Light disappeared at first but came back on, on the next restart.
So I am thinking since the man. sensor didn't solve the problem then all that could be is the sensor that is just in front of the radiator - am I correct?
Here is what the old man. sensor looked like.

 

Did you purchase /install OEM - or Genuine MIni?
I'm no expert but had the same issue (CEL). I don't remember the fault code but from researching pointed to one of the MAP sensors.
I purchased an replaced with (non OEM) MAP sensor (near air box) reset the fault which extinguished the CEL but soon came back shortly thereafter. Purchased and replaced the (non OEM) TMAP sensor above the radiator and cleared the code.
The CEL stayed off for about 10 miles but came back.
Long story short: I bit the bullet and paid $$ and replaced both T/MAP OEM/Genuine Mini sensors. The issue was resolved. Though I have no idea which sensor was at fault or the fix.
I've heard that some of the generic or "Mini specific" sensors are less reliable or junk right out of the box.

 

Did the end of yours (map) look as mangled as mine in the picture?

I haven't noticed any driveablity issues before or after.

 

No. Not at all.... and the receiving hose was still intact.
I have an '04 R53 - Your Map sensor shows a broken rubber/plastic receiving hose stuck on the MAP sensor.
My original rubber/plastic hose never pulled out when I removed the original MAP sensor.


R53 - OEM MAP sensor (0135)_# 0872648


R53 - OEM TMAP sensor (1993)_# 0872679

The images above are of my original factory MAP & TMAP sensors off my 04 R53.
There has been some confusion as to whether these MAP & TMAP sensors are the same/interchangeable - I've learned that they are not.

I've tried to photograph the part numbers so you can compare/reference.
It also has me wondering if the (broken) hose that is still attached to the one in your image has anything to do with the problem you are having?

 

No, the replacement piece and the old BMW piece looked very much alike. Neither of them had any rubber on the ends. When I took out the old sensor I looked down the hole and there appeared that there was a rubber line down there but no way to attach it. Since both sensors looked alike (no rubber) I thought I just needed to screw it down. All the YouTube and info. I looked at didn't mention attaching anything - so now I see mine should be connected via a rubber hose somehow. I don't know if I can grab the hose with a pair of forceps, if there is enough play to pull up to attach the rubber hose to the sensor. Since it obviously broke off that tells me whatever rubber is down there must be in very bad condition (rotting).I don't know how to proceed other than going to my indy to have it fixed, especially taking out the bolt that is stripped.

 

My apologies - I think that rubber elbow shown in my first image came from the first non OEM I had tried. I didn't need it (rubber elbow). I think I just stuck it on my original one (as pictured) when I stored it away in my used parts bin.
Yeah so the MAP (or TMAP) simply looks like this...


I went out to my Mini a few moments ago to see if I could feel the rubber line below the mounting bracket for the MAP. I could just barely get my fingers down in there to feel that it is there.
As you mentioned: I'm not quite sure how to get to it to replace it without having to remove a lot of hoses and components

Man - Sorry I couldn't be of any more help.

BTW: I did replace the original torque screws with philips head machine screws. I also nearly stripped the torques' heads trying to to break them loose..

 

I didn't know you are in the process of replacing your sensor. I don't know about fingers in there, but forceps would work, but is there enough play to make the connection?
Do you think the non oem part will work without having to order the part from BMW?
Where did you get the replacement screws?

 

Sorry for the misunderstanding - No, I had replaced my MAP & TMAP sensors about a year ago when the car started acting funny (stumbling) and threw a CEL. The pics are from old ones I'd replaced.
It was dusk when I tried to see/get my fingers in there. I couldn't see much past all the hoses & wiring in the way. I could just just barely feel the hose underneath the plate.
My connection is still attached so I couldn't really feel any play. As you say; forceps or a pair of bent needle-nose pliers and a slightly larger diameter piece of hose slipped in between the two broken sections might get you by.
Any Salvage yards in your area?

I got my machine screws from ACE hardware.

EDIT: Sorry (see strike through) I just realized yours has broken off at the bottom tip. I do see that new or used can be sourced from some of the Mini parts vendors or eBay.
BUT I came across this (unrelated) video that may be of some help to get a better idea and easier access to the MAP sensor line. *spoiler* - remove the air box and it looks like it might give you better access.

 

Sorry to bother you with this question but I want to be able to take those screws to my indy. so he will have most everything needed to fix my screwup, would you know exactly the screw size?
Did you use the oem part or a non oem?
Interesting I was thinking I might experience some diverability issues but not.
Thanks

 

No problem at all.
As I watched the video I posted above; The uploader mentioned only that the screws were 3mm allen head screws. I'm not sure what the thread pitch is but you should be able t match them up.
I originally purchased the non OEM Map sensor from Amazon. I was able to return it and wound up buying the OEM/MINI MAP sensors from FCP euro - @ $150/ea...they weren't cheap.
So I have both new OEM MAP & TMAP sensors installed in my MINI as of last year.

 

Good video, slightly different but good info.
I am confused because my OEM sensor looks different from the ones I see on Amazon.
Look at my picture the area where the sensor is much thicker and it looks like tubing is connected at the small orifice and the second Pic from Amazon is much slimmer.
I do like, in the video, that their sensor is notched so can connect so much easier than working through a hole.

 

Well, that's because the receiving end of the MAP sensor line snapped off at the base of your MAP.
That plastic/rubber that you see on the "shaft" of your MAP sensor shouldn't be there. It's not part of the MAP sensor. It is the end of the broken vacuum line that got stuck on there when you tried to remove the sensor.
Put a pair of pliers around it and gently twist it off from the MAP sensor. See pic:




This is the line you need to replace:


Image taken from WayMotorWorks website. Price is listed at $27.95.

 

Yes that is the map tube broken off on the map sensor
https://www.waymotorworks.com/map-se...-cooper-s.html

 

Okay, I understand now what I'm seeing in these photos and why mine seemed so different when it wasn't.