Thread: Idle Issues.
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Old 11-16-2009, 06:48 PM
abiby abiby is offline
82 380SL & 96 SL500
Join Date: Jun 2008
Location: Southern Illinois
Posts: 245
Originally Posted by novaguy1970 View Post
Ok, well my mechanic said he was working on my car for a year, and well, he wasn't. First of all i didn't have the time to do this, but now i have to make time. My car has a rough idle, mostly in part because the vacuum system to the engine needs to do done over since someone tried doing it themself without a diagram. As well, I am missing the oxygen sensor which control the fuel air through the lambda control. If i install an o2 sensor by drilling into the exhaust, welding in a new bung, install the oxygen sensor and hook it up, would this work? Where is the oxygen sensor wire located as well for the hookup. Also, where is the lambda unit, because i can find every other one but this one. so i figured once i work out these bugs, i test the timing and do the adjustments since messing with the timing now isn't the right issue to start with.
The Lambda unit is above the passengers footwell. The oxygen sensor is, I believe, on exhaust pipe, passenger side, after the catalytic converter. And yes, welding on the bung to install the sensor would be the correct fix.

It'd probably be worth the effort to get a cd manual for your car. Although they're a PIA, they sure beat nothing, especially when you're trying to replumb the vacuum system.

BTW, What's the story on not having an oxygen sensor and the missing bung?
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