Hey Guys,
Have a question about high altitude, I took my 83 sd up to the white mountains last weekend, the altitude is around 6300ft. When I start the car at that altitude it feels like it is choking for air. After it starts and I start to move it feels like I am in my buddies 240d.

The question is how does the fuel injection compensate for air to fuel mixture compared to todays fuel injection. I know my volvo has a wire that cools and that tells the computer how to adjust the mixture. thanks in advance.

No specific adjustment for altitude. I'd put a pressure gauge on the manifold and check your boost. You shouldn't notice any difference at that altitude except for passing cars without turbos.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

The ALDA does that.

At engine rpm below that required for turbo effectiveness, you are going to suffer a performance deficit due the the reduced air density at higher elevations.

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When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.

X2

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Codifex
1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)