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Discussion Starter · #1 ·
gday all,

My petrol/gas gu turbo 4.5L has a duty cycle problem when running on fuel. At idle the duty cycle jumps spasmodically from 4% to around 70% which makes idling very rough.
When cruising it lurches. Its seems its getting an electrical noise or something thats causing the computer to pump extra fuel even though its not needed.

I have had the Crank Angle Sensor harness checked out and all seems fine. Could it possibly be the after market computer?? its an EMS Stinger.

When its running on gas its fine.

Is there anyone out there who could shed a bit of light on this please!

Appreciate any help.

Regards
Harvey
 
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