engine shut off delay

Started by speedracer, March 31, 2006, 02:13:51 PM

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speedracer

hey guys what causes this?  When I shut I turn the key off it takes a extra second to shut down?
Thanks johnny

WZ JUNK

Quote from: "speedracer"hey guys what causes this?  When I shut I turn the key off it takes a extra second to shut down?
Thanks johnny

Electric fan or alternator might be back feeding through the ignition system.  I think the fan on my old truck is causing the same effect.  It runs for a few seconds after you shut off the ignition when it is hot, and then dies.  I left it like that.  If I time it right, I can get out of the truck and start to walk away when it dies.  I think you could put a diode in the fan circuit to eliminate the problem.  Just speculating.

John
http://purplesagetradingpost.com/sumner/hooley/hooley-2005.html
WZ JUNK
Chopped 48 Chevy Truck
Former Crew chief #974 1953 Studebaker   
Past Bonneville record holder B/BGCC 249.9 MPH

Dave

Quote from: "WZ JUNK"
Quote from: "speedracer"hey guys what causes this?  When I shut I turn the key off it takes a extra second to shut down?
Thanks johnny

Electric fan or alternator might be back feeding through the ignition system.  I think the fan on my old truck is causing the same effect.  It runs for a few seconds after you shut off the ignition when it is hot, and then dies.  I left it like that.  If I time it right, I can get out of the truck and start to walk away when it dies.  I think you could put a diode in the fan circuit to eliminate the problem.  Just speculating.

John
http://purplesagetradingpost.com/sumner/hooley/hooley-2005.html

Put a diode in the circuit and that will fix it. The alternator can cause feed back also. I had to do that on my 34 .
Dave