Failed emissions - for those states that care!

[Jason89i]

might want to check the engine temp sender. i had that connector go bad once. i had it hooked up to a scanner were you could see ALL the sensor inputs while the car was running. sure enough, the dme thought the engine was 0deg at warm operating temp. wiggling the connector and you could see the temp jump up to 140deg. bad connector, engine was running rich thinking it was a cold engine. just a thought. cheers, jason blackhawk the 13th?

[iflytii]

Have you checked to see if you are throwing codes? I was running super rich until I got all my codes cleared. A bad knock sensor was the main culprit for me, causing the computer to go limp... :(

[david55838]

Are you using the stock catalytic converters?

They're some aftermarket cats. An emissions repair approved shop in the area quoted me $3600 :crazy: to source E36 M3 cats, fabricate them and weld them in closer to the exhaust manifold.

I need another idea!

[1990m3]

David - contact me offline and we can meet up. My car passes emissions very easy. I'm sure we can figure out how to make yours pass as well. You may need the charcoal filter assembly but I'm not sure.

check your PM

[dougsic]

Are you using the stock catalytic converters?

[david55838]

Besides a power chip, non-stock AFM and maybe a bad O2 sensor, are there any other causes for an S50 to run rich and go over the limit on the HC and NOx readings?

Thanks!