Engine doesn't stop when you turn off the key.

[MR.812]

My issue is that it take 3 second for the engine to die after i shut off the key?

 

[Vwsaabvt]

It's from feedback coming from your heat exchanger fan, you need to wire a diode into the power wire so that it doesn't backfeed and keep the ignition circuit powered up.
I've got a few extra diodes, message me your address and I'll mail you some.

 

[MR.812]

Thanks
what fuse is used for the heat exchanger fan wire?

 

[Vwsaabvt]

not sure off the top of my head which circuit the heat exchanger fan is on in the fuse panel. These are what I used https://www.amazon.com/gp/product/B01CXOQMJ8/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

ncgoblin's Build Thread - 2005 SS/SC North Carolina

Yes, ditto to what Chad just said. The fuel pump windings could be shorted out.

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