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no spark and no fuel

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Old 01-20-10, 12:26 AM
  #26  
Rotors still spinning

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It sounds like a bad air flow meter to me. I had one go bad about 10 years ago and it drove me crazy trying to diagnose it. I replaced pretty much everything first but ruled it out early so never tried it. I had no spark and no fuel but I had power everywhere I should have. Swapped it out and it ran fine. Try that. If it isn't working properly, it may not send the ecu the necessary signals to fire the coils and it won't trigger the injectors either. Aside from the ecu, the air flow meter is the only other thing common to both the ignition and fuel systems.
Old 01-20-10, 12:31 AM
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Originally Posted by rotarygod
It sounds like a bad air flow meter to me. I had one go bad about 10 years ago and it drove me crazy trying to diagnose it. I replaced pretty much everything first but ruled it out early so never tried it. I had no spark and no fuel but I had power everywhere I should have. Swapped it out and it ran fine. Try that. If it isn't working properly, it may not send the ecu the necessary signals to fire the coils and it won't trigger the injectors either. Aside from the ecu, the air flow meter is the only other thing common to both the ignition and fuel systems.
one thing i notice (with my other s4 that was running two years ago) is that with ignition on not runnin if i ever unplugged my maf is would click lick it was closing and i would plug it back in and it would do the same thing, my car now doesnt do that is that a symptom of a bad maf
Old 01-22-10, 10:01 PM
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it was the maf sensor unplug it and brap it ran for a sec but it deff started just gotta get another maf and hope no part of the harness is ground some where thanks for all your guys help really appreciate it
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