Rule out any vacuum leaks before going further. Then verify fuel pressure
and rate of delivery. Verify timing and mixture is spec. Then follow
Bentley as to testing idle control items, throttle switch and idle motor
and idle ECU.

At 07:51 AM 06/30/2003, you wrote:

>About 10% of the time when I decelerate to stop at a light or in the
>driveway, the idle drops to 500 or less with the result that the engine
>quits.  It starts OK, but it is becoming annoying.  Last week I replaced the
>AFM, which increased performance, but I don't know if this might contribute
>to this problem.