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Old 08-31-2012, 08:58 PM   #1
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Default engine stays running when key is off and out

Long story short... Go to turn the truck off, and the engine stays running. Everything interior, lights, etc turn off like they should, but not the engine.

Pull fuel pump relay and battery neg. cable to kill it. connect battery and fans, pump, etc come on like the key is in the on position even though its off/out.

Starts up fine, drives fine, key turns fine and comes out fine, but engine won't shut off.

Please tell me all I need to do is pick up a new ignition switch from O'Reilly's and don't need to get the Cylinder rebuilt etc etc..
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Old 08-31-2012, 09:35 PM   #2
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Do you have efans, if so just went through the same thing ended up being the relay harness two wires pulled out the constant hot and ignition were touching it would stay running till all fuel was pressure was gone
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2000 1500 Silverado 5.3 4x4 2500 hd swap keys lowered drop shackles blocks removed, comp 212/218 low lift, ls1 ported throttle body, long tubes ory, cai, magnaflow 3" exhaust cut in front rear tires, f-body efans, rear sway bar, 6k hids, hi 4 mod, tuned by hp tuners and the madness continues

(WRECKED)2000 silverado 5.3, 225 Exhaust Duration: 229 Intake Lift: .580" Exhaust Lift: .590" LSA: 114+4 Intake, street sweeper exhaust, long tube headers
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Old 08-31-2012, 10:35 PM   #3
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Default

I had the same problem with mine before I hooked my fans to my computer. Turned out to be the e fan harness letting power feed back to the ignition through the a/c wire. Disconnected that and problem solved. Hooked the fans up to the computer after that.
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Old 09-01-2012, 01:40 PM   #4
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Prob just bad ignition switch replace it and you should be good to go.
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Old 09-02-2012, 07:42 PM   #5
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It was the electric fan wiring! Thanks guys. Saved me a lot of time and cash!
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Old 09-02-2012, 09:05 PM   #6
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Good to hear
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2000 1500 Silverado 5.3 4x4 2500 hd swap keys lowered drop shackles blocks removed, comp 212/218 low lift, ls1 ported throttle body, long tubes ory, cai, magnaflow 3" exhaust cut in front rear tires, f-body efans, rear sway bar, 6k hids, hi 4 mod, tuned by hp tuners and the madness continues

(WRECKED)2000 silverado 5.3, 225 Exhaust Duration: 229 Intake Lift: .580" Exhaust Lift: .590" LSA: 114+4 Intake, street sweeper exhaust, long tube headers
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Old 09-02-2012, 09:05 PM
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