I would try cleaning the contacts on the pump/computer to see if that fixes the problems. Someone else on this board tried that out, and it seemed to make the car ride smoother as well as more level.

The controller is behind the driver headlamp. You will see see the connector as it has many wires going in and out of it.

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.