EFI Vortec Supercharger Idling problem - MustangForums.com

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Old 11-09-2009, 01:14 AM   #1  
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Join Date: Nov 2009
Location: california
Posts: 1
Default EFI Vortec Supercharger Idling problem

I have a new M6007 A351E crate engine with EFI Vortec Supercharger system on my 1965 Mustang. At initial start up, RPM tends to fluctuate for few minutes until it stops steady at 1000rpm. Sometimes it drops to 500rpm and comes back up to 1000rpm or even stalls. When I tap on the accelerator, it will stay up for few seconds until it drops back to 1000rpm. Anyone knows what is causing this unusual idling? Thank You
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1965, classic, efi, idle, mustang, problems, supercharge, supercharged, supercharger, vortec, vortec99cobra

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