Ari,

         Common culprits are weak electrical connections or leaky vacuum
lines. When you replaced the AFM did you pull the boot between it and the
throttle body and check for cracks? Air leaks here (or later) can cause all
kinds of odd idle effects (since you are pulling air that is not metered by
the AFM.

         It's a good idea to make sure all grounds are clean and tight, and
all electrical connections likewise. You don't mention the year of the Van,
but I believe all have an "Idle Stabalization Valve" (vacuum operated) and
an "Idle Stabilization Unit" (firewall, left side of engine compartment...
electronic). Check the connections to both of these.

         Age and exposure tend to affect the wiring and hoses more often
than the components themselves, and it's usually cheaper to clean
connections/replace hoses than the various modules.

Good Luck!

Tim

At 07:15 PM 12/10/2003 +0000, Ari J. Posner wrote:

>New to the Wasser, just bought one, had to have a valve job done, put it
>back together, and getting this idle where it jumps from 1000 to 3000, and
>then back down, and repeats this over and over while waiting at a light.
>
>Have replaced the fuel pump and the AFM. Really hoping it's not the
>ECU...already have too much into this thing to fast.
>
>Any ideas,
>
>ari
>
>86 GL
>
>
>----------
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