Jim,

Pardon my ignorance there. I was thinking manual transmission, not technical manual!

Yes, I have a Model Year 1986 "USA" Models 107, 126 and 201 manual that covers the differences between the 201.034 and 201.024 cars. There are some pages with the components listed and the functions described. I will check these out and see if there are any fixes or tests I can run.

Well, before I sent this I went out and drove the car with the new octane adjustment setting and that gave a noticeable change in performance. I liked that. As for the tests on the air temp sensor and engine temp sensor, well, they came out within specs. The air temp sensor seems a little loose in its housing, but the reading was ok.

Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)