Disconnect the idle stabilizer valve. Start the engine and with your
foot, keep just enough pedal to keep the engine running until it warms
up. After warmup, goose the pedal once, the back off and see where the
rpm falls to. If it idles properly, then you have a problem with the
idle stabilizer valve or the idle stabilizer control box behind the
right rear tail light.

BTDT!

Regards,

John Rodgers
88 GL Driver

J. Naser Motlagh wrote:

> I have recently replaced my engine, and it runs great.  However, after it
> is warmed up my idle shoots up to 2000 rpms, then it cycles between 1900
> and 2100 in about 3 second intervals.  Any quick thoughts?
> --
> J. Naser Motlagh, MBA, PMP
>