Stalling problem?

MBDiagMan said:

The fact that it happens only on damp days would normally indicate an ignition problem. In the days of distributors, ignition being the problem would be a virtual certainty.

Assuming this is on your 2001 Mod motor, however, it's hard to imagine damp air causing ignition problems. I would check all the COP's, however, and make sure that they and their respective spark plug wells are all dry.

After doing that, if you find dry COP's and spark plug wells, start looking for a vacuum leak. Do not overlook an EGR problem since this will often act as a vacuum leak if the EGR control components like the DFE are not working correctly.

Good luck.

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