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Discussion Starter · #1 ·
just got a 04 M3 with only 25k miles on it. I paid 18k for it and thought it was a good deal. I got it checked out by a mechanic and all seemed good.*
The day I bought it a few days later and on the drive home the check engine light came on. The seller must have cleared the light before I showed up.*
I ran the codes and it said it was the cat. The seller told me it couldn't be the cat and that it was the secondary air pump or smog pump.*
*I changed The pump and light cane back on. It's been a couple weeks and still havent been able to smog it. Where should I go from here? Any help would be great
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