Hey guys,
My 1984 300d lately has been maxing out at about 60 mph. It feels fine around town (except on steep inclines), and will shift through all 4 gears. On the freeway, though, I can barely keep up with traffic. The turbo is working ( I can hear the blowoff valve, at least) and it seems like again all 4 gears are working (though honestly its a bit harder to tell on the freeway with traffic and hills, damn SoCal!). It kinda feels like the engine is starving - o2 sensor? Clogged fuel filter ?

Also the transmission fluid level is fine.

Thoughts ?



Thanks !!!