Whats this and what does it do ?

Hi guys, I have just done the EGR Mod this morning along with the Crank Breather replaced for the new BMW non filter version.

I am curious though, I replaced the EGR and cleaned as much as I could today (will do the Inlet Manifold when I have more time) I did notice though there is a plug in unit attached to the Intercooler pipe on mine as in the picture attached...with the plug and wires coming from it

(Apologies for borrowing a pic from another user on here, my camera wasn't charged, so its not from my car exactly and I have no oil leaks)

This is fitted to mine onto what appears to be a silver alloy section that the sensor screws into..rather than the plastic one on this picture..

I'm only asking as there looked to be a small amount of oil on the sensor when i looked inside and was wondering if it will detriment anything or should I replace it..
I was reluctant to try clean it as i didn't want to break anything..

My car is a 04 TD4 by the way....


Thanks...Dean

Seems the double post gremlin is about again!!

Echo!!!!!!!

I know.... humblest apologies.

I have no idea why it posted twice.. bl**dy computers

maybe you forgot you posted?:hippie:

jedi said:

maybe you forgot you posted?:hippie:

Click to expand...

Didn't know my uncle Alzheimer went straigh over the channel ????

who????????????:confused2:

jedi said:

who????????????:confused2:

Click to expand...

What does Alzheimer do to a person ?? Makes him forget he posted a thread, that's why the post came in twice .....

Or maybe he has a stammer????

and theres me thinking this was a freelander forum, not a stand up comedians forum...


oh how I laughed....lol

thanks guys.

:5biagree:

MAP sensor, manifold absolute pressure(fitted between turbo and intercooler on earlier TD4's)

Hmm now i'm curious....

I posted this question twice by mistake but have now got 2 answers...

Chaser said:

It's an IAT (inlet air temperature) sensor. There's no way to stop it becoming oily, don't worry about it....

Click to expand...

and also the one above from longdog..

Which is it then ??
and if it is the MAP sensor would the fact that it does have oil deposits on it be a detriment to the running of the car..

saying that, mine is an 04 facelift model so hardly an earlier TD4 ??
Thanks..Dean

Is this sensor before or after the turbo circuit??? I can`t tell from the picture!!!

Is this sensor before or after the turbo circuit??? I can`t tell from the picture!!!:hysterically_laughi