M104 oil pressure sensor

[MD5]

My 1996 E280T has had an erratic oil pressure gauge since I bought it, and it could be a number of things, but I guess the sensor is a good place to start.. Unfortunately, new ones are about 10% of the value of the car!

Does anyone have a used one that works please?

 

[grober]

Try cleaning the SENSOR connection electrical contacts often the source of erratic readings.

 

[MD5]

Thanks Graeme. Funny you should say that, my mechanic (non MB) had a quick look whilst he is replacing the discs and pads, but couldn't find it. Any ideas as to where it's located please?

 

[w124coupe]

At the base of the oil filter.

 

[MD5]

Thanks again! (sorry for double posting)

 

[grober]

item 134 Êàòàëîã

 

[MD5]

Thanks again! I think they are about £60 odd. A bit of a fiddle to check the connection from above with a hot engine, so will have a look tomorrow under a ramp.

 

[janner]

Check the wiring going to it. From memory I think it's a small loom that's separate from the main loom but made from the same crumbling wire. Even if your engine loom has been changed this small loom might not have been.

 

[MD5]

Ta! It's actually a bit of a fiddle to get to, and my non MB mechanic couldn't loosen it yesterday when changing the oil. I think I'll get my indie to have a look at some point. Me and spanners don't get on!

 

[MD5]

Result! I put the part no. into ebay, and found a Swiss seller offering a brand new one. I paid £16.60 odd, inc delivery. Fitted this morning. Have a look at the gauge now!