Jack -

Here is a thread that discusses that aspect - I don't have time to analyze right now, but I think it's what you need to do. On my 603 engine the ALDA has been removed before I purchased it and the car runs great. If you plug all of the right vacuum lines it should work for you too.

Best of luck -
James

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K