A couple of quick things to check: a vacuum hose may have fallen off or developed a leak The plug for the mixture screw is missing bad ignition wires sticking throttle cable not allowing the idle micro to "set" Dirty, fouled spark plug leaking cold start valve David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "funkstuf" <funkstuf@xxxx> wrote: > After many months of rehabilitation (the Delorean that is), I had a > weekend of driving my Delorean.. It ran great for the first day and a > half. > Then it developed a strange problem. The idle began fluctuating up > and down between about 500 and 1200 rpm. (Prior to this, it was > tending to idle at about 1000 when cold, then 1500 when warm and we > were unable to get it to idle lower) When it drops, it almost looks