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1989 Porsche 928 S4 5.0L Excessive Emissions
Posted to European Driveability on 8/26/2009 12 Replies

Numbers before the cat at 15mph with Air injection off are: HC-234 [...] CO-.13% CO2-15.2% O2-2.9%

Vehicle is failing CA Emissions Test with Excessive NOx and high HC.

O2 sensor fixed lean but will respond to propane, No Vacuum leaks, Injector on time 3ms, t...

12 Replies Received (View Replies)

  Related Documents & Media  1989 Porsche 928 S4

 
Message Closed w/Summary

car Vehicle Data

1989 Porsche 928 S4

VIN WP0JB0925K
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI
EmissionsCa Emissions
SymptomsExcessive Emissions
OccursAlways
Message Closed w/Summary

car Vehicle Data

1989 Porsche 928 S4

VIN WP0JB0925K
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI
EmissionsCa Emissions
SymptomsExcessive Emissions
OccursAlways