thefatcobra Posted December 14, 2016 Share Posted December 14, 2016 I boosted with my 2011 gas f250(the other truck battery was completely dead) and now my truck wont stay running, it will turn on and run for a few seconds and shuts off, anyone have this happen and what was the issue?? Quote Link to comment Share on other sites More sharing options...
fuzzymoomoo Posted December 14, 2016 Share Posted December 14, 2016 Sounds like your alternator is bad, which is draining your battery. If you can, have both tested Quote Link to comment Share on other sites More sharing options...
thefatcobra Posted December 14, 2016 Author Share Posted December 14, 2016 I ran it with a battery charger hooked up and it does the same thing, i have it pulled into the shop at work with a charger hooked up for the night as i checked it after the first time it started and died and the voltage was only at 11.5 volts which i know is pretty bad. It will run a little longer if i push on the gas pedal but the rims will drop to only a couple hundred and then dies. Quote Link to comment Share on other sites More sharing options...
thefatcobra Posted December 17, 2016 Author Share Posted December 17, 2016 So I left the charger on my truck for the night, got to the shop in the morning and tried starting with a fully charged battery and it started right up and still dies. I didn't have time to work on it so we drug it down to a shop about a half a block away and they call me back later on in the day to say it was running just fine, no stalling after start up and they drove it around to make sure it was good. Quote Link to comment Share on other sites More sharing options...
fordmantpw Posted December 17, 2016 Share Posted December 17, 2016 Bad air in your shop. 1 Quote Link to comment Share on other sites More sharing options...
wdbates Posted April 26, 2017 Share Posted April 26, 2017 sounds like an anti theft device that got activated Quote Link to comment Share on other sites More sharing options...
7591250sd Posted March 19, 2018 Share Posted March 19, 2018 Igntion keys have a start & run circuit, perhaps something in the run circut is bad.. Also - unplug battery and let ECM memory clear. Quote Link to comment Share on other sites More sharing options...
thefatcobra Posted March 27, 2018 Author Share Posted March 27, 2018 This happened over a year ago, no issues with my truck since. Just hit 84,000km, still running like a champ. Quote Link to comment Share on other sites More sharing options...
7591250sd Posted March 27, 2018 Share Posted March 27, 2018 The charging circuit has a rectifier bridge that converts ADC to DC.. .. The alternator will have a rectifier bridge .. If jumper cables were hooked up positive > negative, the bridge will fail. The is easy to check with a ohm meter.. It will have 3 wires, bascially it will read infinity and zero ohms across all 3 leads when ohm meter leads are swithced.. see https://www.freeasestudyguides.com/electrical-rectifier-bridge.html Quote Link to comment Share on other sites More sharing options...
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