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Slk 230K
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30 Posts
Discussion Starter #2 (Edited)
Uhhh

Searching in internet I find this is a MAP Sensor...so, now, I have another question:

Where do I have to connect this wire? This wire ¨starts¨ in the MAP sensor and where does it finnish?
If someone has this, can give me the part number...

Tks!
 

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1998 SLK 230 Kompressor
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18 Posts
If you look to the right of the red arrow you can see that you already have the MAP Sensor, its just covered in dirt
 

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Slk 230K
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Discussion Starter #4
Sorry!

Sorry but my car NEVER drive with this dirt...ijijijijij.
It's not my car photo, it's a exemplo in internet, my car has the connector but doesn't have the sensor, so I ask what sensor is this?

Tks alexlmsdrums!
 

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Zotye Auto 1.5T T600 2016
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52,804 Posts
Your car is a Kompressor so it does not need the map sensor, it uses a charge air sensor instead. They use the same wiring loom for both models as this works out cheaper than making two different looms.
 

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Outstanding Contributor - Always Remembered, RIP
Zotye Auto 1.5T T600 2016
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52,804 Posts
Tks eric242340!

Perfect!

Now I'm more calm.

Tks!
It was obvious to me that the pic was not of your own car as you live in Spain, a very pretty tourist destination.:thumbsup:
 

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1998 SLK 230
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2,648 Posts
cars pre face lift (< yr 2000) use the Bosch ECU - they DO NOT have a MAP sensor.

face lift cars post yr 2000 use the Siemens ECU. they do have a MAP sensor.

see post here http://www.benzworld.org/forums/r170-slk-class/1528367-technical-differences-between-pre-facelift-facelift.html#post4211819

for tech difference b/w the pre and post face lift. the MAP would have 2 inputs, the electrical plug to it and the rubber hose which taps into a port under the intake mainfold to get a reading

which part are you not sure of? if it was unplugged or not working your car would have issues with smooth peformance?
 

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1998 SLK 230
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2,648 Posts
see diagram of all sensors on the SLK (post face lift).

2 pressure sensors

1 for manifold (sensor B28)
1 for ambient pressure (sensor B18).

from your pics this is sensor B18. this sensor isnt critical it only helps with adjusting a/f ratio when starting car (i.e. making it a bit richer or leaner). after the car has warmed up it serves no purpose.

the other sensor DOES matter... it influences peformance and activation of the cam shaft adjuster.
 

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