Will '88 AMM fit a '92?

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rastlouis@rogers.com - 01 Aug 2005 19:52 GMT

Got a AMM from a junkyard '88 740, hoping it would fit my 240 (as a
spare). It checks out fine with the multimeter (as per the tests in
Bentley). Unfortunately, looks like the AMM's changed from 88 to 89.
If I recall from my reading, the pre-89 ones had a manual idle
adjustment.
Question: can I use this 88 AMM on my 92?
Thanks.
--Robert

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Pat Quadlander - 02 Aug 2005 03:42 GMT

if the part numbers match, you're good to go.

> Got a AMM from a junkyard '88 740, hoping it would fit my 240 (as a
> spare). It checks out fine with the multimeter (as per the tests in
[quoted text clipped - 4 lines]
> Thanks.
> --Robert

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Big Dick - 02 Aug 2005 12:34 GMT

No.
The 88 AMM is adjustable.
The 92 AMM is not adjustable.(computer controlled)
If the adjustable one is installed on the 92 model
it will run very rich and pump out black smoke.
The wires wires that come from the brain into
each AMM are not the same signals.
You could possibly fry the fuel brain and/or AMM
if the wrong one is connected.
BD
---------------------------------

> Got a AMM from a junkyard '88 740, hoping it would fit my 240 (as a
> spare). It checks out fine with the multimeter (as per the tests in
[quoted text clipped - 4 lines]
> Thanks.
> --Robert

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rastlouis@rogers.com - 02 Aug 2005 16:11 GMT

That's what I thought (no go). Thanks for confirming.
Anybody want or need a spare AMM? Part number
Bosch 0 280 212 007
$50.
Thanks.

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danil - 08 Aug 2005 20:36 GMT

> That's what I thought (no go). Thanks for confirming.
> Anybody want or need a spare AMM? Part number
> Bosch 0 280 212 007
> $50.
> Thanks.

Yes I need one how do you know that it works? I mean properly, I had a
car where it would malfunction and I swapped it from my other car so I
could use a spare if it is ok.

Let me know where you are as well, please,

Dan

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rastlouis@rogers.com - 11 Aug 2005 13:37 GMT

Hi Dan,
I'm in Canada.
The AMM came out of a 1988 740 which I was told was running when it
came to its final resting place. I ran the multimeter checks that
Bentley recommends and it checked out fine, well within the ranges
given (you check resistance at 2 different connector pairs). So as far
as I know it should work, but I can't test it on my '92. If you're
interested email me offline at rastlouis@rogers.com and we can set
things up.
Cheers.

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