Hey George,

If you're anywhere near SE Ohio, I could loan you one (I have a spare somewhere!).

You could try starting the car with the AMM unplugged, and see if the idle stabilizes at a proper RPM. Though I'm not sure how valid the results would be in this case. Another "test" you could try would be to pull fuse number 6 for a few minutes (I think this is the right fuse for the ECU in the 1991 240). This would clear the adaptive memory of the ECU, and if your AMM is bad and the ECU has been compensating for it, the car may not start again once the fuse has been replaced because the ECU will have "forgotten" how to cope with the bad AMM. I admit it's not a great "test", but it might help point the finger a little more confidently at the AMM if it *is* the culprit.

Otherwise, try a local salvage yard or "uneedapart.com". The latter is a used parts network, and I've had pretty good luck with them. They'll send out your request to a nearby yard, which can likely have the part on your doorstep the next day with standard shipping.

Folks have had mixed results with rebuilt AMM's. FCP Groton could be the cheapest source for those.

Check the part number on your AMM. Should end in -016, or -001 if you have a manual transmission.

Good luck!
-Ryan
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Athens, Ohio
1987 245 DL 314k, Dog-mobile
1990 245 DL 134k M47, E-codes, GT Sway Bars
1991 745 GL 299k, Regina, 23/21mm Turbo Sway Bars
Buckeye Volvo Club