engine won't shut down after a run. have a single wire delco alt. 292 with ford dura spark. solenoid is 2 small term. tried removing he 2nd term that gives full 12vwhen cranking. Home » Keeping The Dream Alive! » Technical http://forums.y-blocksforever.com/Topic151366.aspx

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By 2721955meteor - 4 Years Ago engine won't shut off until low idel. it appears when alt charging there is feed to ign. stumped,any ideas would be appreciated By Lord Gaga - 4 Years Ago Your Y-Block is rejecting the scrub transplant?  You might have to put a diode in the GEN warning light circuit? By one piece at a time - 4 Years Ago Go to the internet and read up on wiring a one and three wire alternator. Run on will happen if the sensing wire is typed in with the coil ignition wire circuit such as the ignition switch. By slumlord444 - 4 Years Ago Need a diode in the circuit per Lord  Gaga. Had to do that when I put a GM alternator on my antique two cylinder John Deer tractor. By Robs36Ford - 4 Years Ago Is your gas really old? The common causes for run-on are lean fuel mixture, poor grade fuel, and too high an idle speed. Too hot spark plugs (non stock) are another possible cause. By 2721955meteor - 4 Years Ago using a single wire delco alternator.engine idls at 600 it will stop at idl (when alt stops charging) on warm up with choke on high idle won't stop. i cant figure out  how the system leaks  to keep running when alt charging. replaced off with new that was  new 2 months ago   ???.   By Butch Lawson - 4 Years Ago Here ya go https://www.ebay.com/i/152043261434?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=152043261434&targetid=884131267673&device=c&mktype=pla&googleloc=9013259&poi=&campaignid=9248509114&mkgroupid=94612569555&rlsatarget=pla-884131267673&abcId=1141156&merchantid=101684671&gclid=Cj0KCQjwyur0BRDcARIsAEt86IBCraCaiFh4o9zvckCLXIlJWFZwrwwQJQJrwxWlxQfEjhCPyDwe7fIaAhVwEALw_wcB By 2721955meteor - 4 Years Ago thanks will get 1 cliff By charliemccraney - 4 Years Ago How does that diode harness work on a 1 wire alternator? By montana ford man - 4 Years Ago years ago I read an article on how to put an early 70s gm alternator on my 56 ford.it was an easy swap but you have to put a diode on the wire that goes to the ignition switch.the switches back then weren't isolated like they are in more modern cars like the 60s on up. what happens is electicity runs through the switch so the car keeps running even though you shut the key off.I went to radio shack back then  and bought one fairly cheap and it has worked fine for 10 years or so without any problems  hope this helps. By 57RancheroJim - 4 Years Ago I don't understand the diode thing? I've used the one wire alt and it just has ONE wire from the alt to the + terminal on the starter solenoid, nothing goes to the ignition switch.. By 62bigwindow - 4 Years Ago I have a one wire alternator and have not experienced this. How do you have it wired up? By 2721955meteor - 4 Years Ago replaced the solenoid(made in tywan) appears to have corrected issue. as i had terms 2 (small 2) hooked up to give coil full voltage i think that terminal had a minute leak giving the dura spark enough to keep engine running when it slowed enough that alt. was no longer charging i could kill engine at idea.??