I have 2 sensors (the second from a parts car) and they both behave the same. I can put pressure on the top to get it to work temporarily, but then it stops working again. The problem is definitely at the sensor, I can always make it work by fiddling with it, but it lasts for days, hours, minutes or seconds depending on the phase of the moon. Does anyone here know which contact point most frequently fails? I'd like to fix/resolder the connection if I knew what to do. Thanks!

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.

All we ever did was stick a piece of high density foam in the middle hole and screw the top back on. This would usually work for 4-6 months, and then you would need a new piece of foam.
I've never heard of anyone finding the failed connection anywhere.....
Cheers,
-M-

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Currently:
1972 350SL Euro 4spd
1973 BMW R75/5
1981 BMW R80GS
1995 FZJ80 with OM606 Conversion In Progress

my dad repaired mine and his. idk how he found it but he did. i would just go through and touch a hot soldering iron to every connection on the top of the sensor.

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have no worries.....President Obama swears "If you like your gun, you can keep it

I opened mine up and put a small piece of vacuum hose in there and closed it and it works fine now.

I just repaired mine over the weekend. Got tired of constantly replacing a piece of foam to apply pressure. Anyway, on some posts I read, they mentioned some cold solder joints... after removing the white silicone carefully (on the top and underside) my joints looked good. what I found in my case was that it was the pins that was loose, not making a good connection to the socket. There is a plastic "plate" that holds the pins loosely that then snaps into the housing which is suppose to hold the pins in place. (I refer to the housing as the round unit that holds the electronics) so what worked for me was taking some silicone sealant and applying it where the wires go into the pins and filling that whole area then snapping it back into the housing. The sealant set up pretty firm and the pins don't move. I wish I had taken some photos so you could see what I'm talking about. I guess the bottom line in my case was it the pins were not making a solid connection. For kicks, you could try going to an electronics store and see if contact cleaner or enhancer works...

Les

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1980 300sd - Ivory, Tobacco Interior 130,000 miles
2003 Expedition

Where a calculator on the ENIAC is equipped with 18,000 vacuum tubes and weighs 30 tons, computers in the future may have only 1,000 vacuum tubes and weigh only 1.5 tons. - Popular Mechanics, 1949