Hey guys,

Intermittently over the last year or so my '91 M103 has had a low idle @ stoplights when the A/C is on. Just recently (even in these colder Fall temps with the heat on) it's decided that it will have a really low idle with the CC on in any position other than "Economy".

Can anyone tell me where exactly the relay/servo/doodad that's supposed to increase the idle with the A/C and/or climate control on is located? Is there any way to test it?

Any other advice for fixing this? (Like, is a vac leak a possibility culprit?)

Thanks!

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Currently:
1972 350SL Euro 4spd
1973 BMW R75/5
1981 BMW R80GS
1995 FZJ80 with OM606 Conversion In Progress