ml320 Shakes & Loses Power

[dmh10]

My wifes 99 ml320 has started acting up. Lately, when my wife drives the vehicle it will start shaking and will lose power. This happens when the vehicle is warm and it happens only occassionally. When it happens she pulls over, turns the vehicle off and restarts. Then it drives fine and she may go 100 miles before this happens again. The last time this occurred the check engine light blinked. This problem first happened three weeks ago and since then the check engine light has been on.

We love this vehicle and have had no problems over the last 40,000 miles. Currently, the vehicle has 77,000 miles on it.

Any help diagnosing this problem wouild be greatly appreciated.

Mark