BMW 318 TI

1931 BMW 318
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RUBERSAL
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we have a BMW 318 ti it has THE :( engine light on
we have replaced the catalyst and the front and rear oxigent sensors ,we have the light reset but after 80 miles the light comes back on .....what do I do next
May 29, 2007 at 2:34 AM
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2CARPRO JACK
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What codes were in the PCM?
May 29, 2007 at 6:06 AM
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RUBERSAL
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THE CODE ON THE PCM IS PO 420
May 30, 2007 at 10:17 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
Did you use an OEM cat converter? If not, it might not be correct application, ie... universal
May 30, 2007 at 10:39 AM
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