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How would you do this without a dyno?
Posted to Technical Discussion Forum on 10/25/2008 28 Replies

Hello all,

This Grand Prix came in yesterday evening for a failed ASM emissions diag. The inspection sheet showed it passing OK on 15/50 but the 25/25 readings showed it grossly rich with 4% CO.

Initial checks were all OK, no codes stored, proper fuel pres... Login to read more.

28 Replies Received (View Replies)

 

car Vehicle Data

1994 Pontiac Grand Prix SE 3.1L

Engine3.1 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

1994 Pontiac Grand Prix SE 3.1L

Engine3.1 L
Trans4-speed Automatic (Electronic)