Engine Tries Start When Battery Is Jumped
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Engine Tries Start When Battery Is Jumped
My 1977 Ford F-100's engine keeps going after the key is pulled from the ignition. I had my truck parked and I went to turn it off and pulled the key out the ignition and the engine kept turning. I got out and was disconnecting the battery when it finally turned off on its own. I check all the wires and connections and everything seems OK. The next morning I tried to start it and everything was completely dead so I tried to give it a jump. When I connected the jumper cables the engine started turning like it was about to start up. The battery, solenoid, voltage regulator, and starter are all less than a year old.
Cargo Master
Joined: Feb 2006
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From: North Pole, Alaska
Starter relay/solenoid is bad. Just make sure that it is always in neutral or park when doing something with the battery. I had that happen with my dad's 77 F-150 when I was cleaning the battery posts. It backed it self out of the garage as it was a 4 speed, and I had left it in reverse. The second time was with my wife's old AMC Gremlin as I was changing the battery. This time I had left it in neutral. And yes, AMC used Ford starters and relays.
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Replaced the starter, solenoid, voltage regulator and replaced some of the connectors and wires. Went to start it up and got nothing. I don't hear the solenoid clicking and the starter doesn't make a noise either. All of the lighting and accessories are working good. Gonna take the battery in today and get it checked out, its less than a year old.
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Posting Guru
Joined: Mar 2006
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ouch...not that its of much help now...but always do one thing at a time.
you only needed the starter relay/solenoid.
here's the wiring diagram, assuming its stock.
http://www.fordmuscleforums.com/atta...conv-tfi_2.jpg
double-check the connectors you replaced, and make sure the relay is wired properly.
you only needed the starter relay/solenoid.
here's the wiring diagram, assuming its stock.
http://www.fordmuscleforums.com/atta...conv-tfi_2.jpg
double-check the connectors you replaced, and make sure the relay is wired properly.
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Joined: May 2010
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From: McMinnville, TN
In this case, I second the motion to unplug the keyed ignition switch connector. Also inspect the harness. Specifically, check near the plug connector for the ignition switch.
I've seen a bad solenoid that always passed voltage and I've seen melted wire that crossfed circuits.
I've seen a bad solenoid that always passed voltage and I've seen melted wire that crossfed circuits.
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