I've talked about mpg issues and a stumbling problem (fixed) in previous posts on my '72 145E. My mileage is still not what it should be, though improving. Last fillup was 16mpg, and the next one should be a bit better. I checked my fuel pressure last night and it was a little high, 32psi. The regulator adjusted down fine to 28psi. Turning it down produced a barely perceptible hiccup off the line.

I checked the resistance at the coolant temp sensor, a few minutes after I turned the car off. It was at 380ohms. Isn't it supposed to read under 100 while at operating temperature? If there is too much resistance in it, would that cause a rich or lean running condition? From what I've read, I'm inclined to say rich, but that doesn't seem to jive with what else is going on.

I have to leave air temp sensor unplugged to get a decent idle (especially cold) and off the line performance. Unless I'm mistaken, this should cause d-jet to richen the mixture. I feel like I should be running super rich right now, but it doesn't feel (or smell) like I am. I wish I had a wideband 02 sensor...

Anyway, I'm kind of confused. I'm inclined to replace the coolant temp sensor and see where that takes me. I also scored a fairly cheap and supposedly "known good" MPS off ebay, so I'll be testing that out as well.

So my question is, does any of this resonate? After reading some archived posts and seeing stories of 25+mpg highway with the aw35, I'm kind of obsessed with getting north of 20mpg at the very least even though I'm still planning the m41/t5 conversion.

Sorry to be so... verbose.