C20XE overfueling - fault 74 excessive voltage to AFM??? - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » C20XE overfueling - fault 74 excessive voltage to AFM???

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*CorsaCal*

Member

Registered: 3rd Oct 10
Location: Leicestershire Drives: 20XE Corsa
User status: Offline

23rd Apr 14 at 17:07

I have a corsa sport with a coil pack type 20XE engine conversion. The car has decided to start running really rough and over fueling. The only fault code that keeps coming back is code 74 excessive voltage to AFM. Has anyone came across this before? I have tried 2 different air flow meters and both show the same fault code. The alternator is not over charging.

Cheers,

Cal

*CorsaCal*

Member

Registered: 3rd Oct 10
Location: Leicestershire Drives: 20XE Corsa
User status: Offline

27th Apr 14 at 16:34

Ive ordered a new afm and hope its that. Will see if it comes tomorrow.

--ToM--

Member

Registered: 23rd Nov 07
Location: Wirral
User status: Offline

28th Apr 14 at 19:19

Voltage to the afm tells you it isn't the afm so does the fact u tried two others and it still did it the fault is your wiring to the afm if the fault is voltage TO the afm the fault is before the unit

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