ML320 Idle Speed?

[Chayro]

What is the proper idle speed for a 98 ML320? Mine idles at about 600 after warmup. I'm not 100% sure, but I could have sworn it was idling faster at one time. Thanks.

[AusMBtech]

It should idle 600-750rpm.

There should be a sticker on the engine compartment fuse box that says the idle speed. It's computer controlled in any event. If it's changed then someone has adjusted it in the ecu.