(did a search, but couldn't find the answer...)

I swapped climate control units and yet the problem persists... a/c blower cuts out suddenly then comes on suddenly- no rhyme or reason.

What gives?

Thanks

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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio

Pretty much see if signal from the climate unit is dropping, supply to blower regulator is dropping , blower regulator is failing or blower motor is failing.

I'd find the blower regulator and hang a meter on the signal wire.

Excellent suggestion.

Will do and report back.

Thanks,

AL

__________________
03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio