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>From: "larry d. adkins" <lda@lex.infi.net>
>Hi I have what I hope to be an easy question. I currently have
>a 73 automatic fastback that's a daily driver. The original
>engine was a basket case and had non-working A/C. I had the
>original engine swapped out for a great running 71 FI engine.
>My question....the car seems to run fine but I have read various
>articles about keeping the original control unit for the
>proper year engine. Is this true?? I have the control unit
>for the "new" engine (currently the 73 ECU is running the 71
>engine). The only thing that I really have a problem with is
>the warmer the engine gets the rougher the idle while stopping
>at a traffic light or whatever. When driving on the expressway
>at 55-60 mph I notice no miss or lack of power. Should
>I leave well enough alone or make the swap????
The only thing you should have changed is the throttle valve switch. The 71
and its cable harness is expecting a 4-pin switch. The 73 engine came with
a 5-pin switch. If you already swapped these then you may need to adjust it
properly. See the Bentley manual.
Jim
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Melissa Kepner Jim Adney
jadney@vwtype3.org jadney@vwtype3.org
Laura Kepner-Adney
Madison, Wisconsin
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