brickit Posted January 17, 2018 Share Posted January 17, 2018 78 wont start, turn the key and dash lights up and nothing then turn key off and dash still lit up and fuel pump still running. unplugged alternator for possible feedback and no change so maybe ignition switch. ??? Quote Link to comment Share on other sites More sharing options...
JSM Posted January 17, 2018 Share Posted January 17, 2018 It’s possible. I’ve not seen them fail where the dash lights stay on with the key off. So how are you getting the dash lights back off once they are on? Does the pump come on when you initially turn the key to on or only when you turn off? New switches are pretty cheap. I’d replace it and see what happens. Quote Link to comment Share on other sites More sharing options...
supernova_6969 Posted January 19, 2018 Share Posted January 19, 2018 if you'r good with a multimeter and incline to contort, you can actually see where the juice comes from, especially when the key is out..... Quote Link to comment Share on other sites More sharing options...
brickit Posted January 20, 2018 Author Share Posted January 20, 2018 I had to disconnect the battery and then connect it back. I am replacing the ignition modual electrical portion. Quote Link to comment Share on other sites More sharing options...
brickit Posted January 22, 2018 Author Share Posted January 22, 2018 Ok put new ignition switch in and same thing. disconnect ignition switch no change. I unplug and plug in again alt. and get a slight sound change but all stays on. Brake lights work but not bright, headlights not at all. Sorry not good with multi meter. Quote Link to comment Share on other sites More sharing options...
brickit Posted February 8, 2018 Author Share Posted February 8, 2018 Ok need to revisit this. Is there any way a bad or week battery could cause the ignition and fuel pump to stay on after key is off and out? From the sound of it it looks like this may be the case with my 78' Quote Link to comment Share on other sites More sharing options...
ZHoob2004 Posted February 8, 2018 Share Posted February 8, 2018 It sounds like a relay may be sticking closed or has been jumpered to run all the time. Quote Link to comment Share on other sites More sharing options...
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