I assume I will be searching for bad solder joints? things like discoloration, cracks in the solder or anyting else that looks odd - correct?
Yup. And cast a skeptical eye over any/all electrolytic capacitors you may find, those have a poor track record when it comes to longevity.
I just replaced the lone Frako electrolytic (a particularly troublesome brand in these things) that I found in the Jetronic in the 380 SL. It was rated 100uF/40V, and weighed in at 13, 44, 63, or 82 uF on the GenRad Digibridge, depending on the series/parallel and 60/1000 Hz settings. The D factor was large, which sucks. (Related to its internal series resistance.) This is not a very good capacitor anymore. We'll see if it makes any difference. I got out an old Tek 561A freebie scope and was able to see that the Jetronic seems to be doing what it ought to. The O2 sensor voltage hovers at around 500mV, with swings up to 900mV and down to 300mV when playing games with the throttle. (Not back on the road, yet.) -- Jim _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
