hi there today i started cleaning grounds and applying dielectric grease to a lot of different grounds. fuel pump,intake manifold. ect,ect, and also some feed lines. did not have the stumbling problem today in about 60 miles of driving and stopping. cleaned alot of connections that look good until they are taken apart. lots of info in 700-900- faq. good luck.

hi there i have the same thing happening to my 86 244 and i replaced everything you replaced exept the o2 sensor. i also replaced the fuel pressure regulator and the idle control valve. talked to a friend today and we are going to look for a electrical ground problem. or short or something i will probably not be much help to him. but i will post if i ever find problem. it has became more frequent as of late. (signed parts installer) :-}

Hi! Consider the in-tank fuel pump! This pump may be bad (or just a broken hose) causing shortage of fuel supply to the main fuel pump. This problem is common for 240s at high mileage. The fix would involve opening the top of the fuel tank and remove the wire and fuel line assembly. Many previous posts have discussed the procedures. Good luck!