Got a new thorn in my MB. It seems after it gets warmed up and your driving it around, it will lose power and almost die (if you don't let off the gas, it will die). To get it running again, just turn the key off and turn it right back on! She'll run fine for 10 minutes and then you have to repeat the key trick.... Any thoughts? I am stumped!

Rm

Could be low voltage output from coil or low fuel output from fuel pump. More testing needed to find problem. Heat can cause all kinds of problems.

Hmmmm... Thanks Doc. Surely that new pump is not bad already, the coil however may be an issue. The PO had replaced the bosch coil with a generic USA autozone part. Obviously something was amiss to call for the replacement, also noticed tonite the plug wires are arcing a little on the #4 and #5 holes....

You might want to check the fuel filters as well. Might possibly be picking up trash and plugging the filter while the fuel is being pulled through. Once you shut down, the sediment could have time to settle, letting enough fuel to pass before plugging again.

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Mike Tangas
73 280 SEL

Another good one to check. Thanks Mike!