1997 Ford F150 engine runs after key is turned off

1997 FORD F-150

175,000 MILES • V8 • 4WD • AUTOMATIC

JACK1141

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4 POSTS
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My sysem lights stay on and discharges battery and when I charge the battery and reconnect dash lights come on without turning key.
Starts normally but when I turn off key engine stills keeps running.
When I disconnect battery engine stops

Feb 27, 2009 at 11:27 AM

MERLIN2021

CAR REPAIR CONTRIBUTOR
17,250 POSTS

I would start with IGNITION SWITCH 1. To inspect ignition switch for mechanical operation, rotate lock cylinder through all switch positions. Lock cylinder should not bind, and should return from START to RUN position without assistance. 2. If binding or incorrect modes occur, ignition switch should be adjusted. After adjustment, if binding or incorrect modes still exist, lock cylinder should either be disassembled and inspected for damage, or ignition switch should be replaced. 3. To test electrical function of ignition switch, disconnect ignition switch connector. Check continuity between specified switch terminals using a self-powered test light or ohmmeter. See Fig. 2 or Fig. 3 . See IGNITION SWITCH CONTINUITY TABLE. If continuity is not as specified, replace ignition switch.the ignition switch.

Feb 27, 2009 at 12:48 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.