sdsurf Posted June 29, 2010 Report Share Posted June 29, 2010 What are the typical reasons the light is on? Quote Link to comment
jefe de jefes Posted June 29, 2010 Report Share Posted June 29, 2010 Bad voltage regulator/alternator? Quote Link to comment
datsunaholic Posted June 29, 2010 Report Share Posted June 29, 2010 The IGN light is nothing more than the alternator light. When it's on, the alternator or regulator is bad, or the incorrect alternator is installed (IR with the ext reg still hooked up, etc) Quote Link to comment
laotsu Posted June 30, 2010 Report Share Posted June 30, 2010 Ive got the same issue but my charge is good and the lights never dim... it can only be the alt? Quote Link to comment
sdsurf Posted June 30, 2010 Author Report Share Posted June 30, 2010 The IGN light is nothing more than the alternator light. When it's on, the alternator or regulator is bad, or the incorrect alternator is installed (IR with the ext reg still hooked up, etc) Below is the alternator in the truck (external or internal?). These are the two spares I have. Which is correct? Thanks Quote Link to comment
Pacific coast Datsun Posted June 30, 2010 Report Share Posted June 30, 2010 Mike, if the voltage regulator is still bolted to the side of the engine bay the alt. is external. Quote Link to comment
banzai510(hainz) Posted June 30, 2010 Report Share Posted June 30, 2010 the one with the black cage is external , the right could be either Quote Link to comment
datsunaholic Posted June 30, 2010 Report Share Posted June 30, 2010 They're both external. Just the one on the right is the Mitsubishi type, and the left is the Hitachi type. Interchangeable for the most part, I've seen both. Quote Link to comment
Datsun fan Posted July 1, 2010 Report Share Posted July 1, 2010 You all forgot to mention that if the belt is loose or cut the light will come on . :D Quote Link to comment
sdsurf Posted July 4, 2010 Author Report Share Posted July 4, 2010 ok so the belt is tight. I swapped out the alternator I had for another spare and did the cheater alternator test. Pull the negative on the battery and see if it keeps running, it did (with the old alt it shut off). so the light is still on. Thoughts? Quote Link to comment
sdsurf Posted July 8, 2010 Author Report Share Posted July 8, 2010 ck every now and then to make sure battery dont OOZ out acid. Sign of cooking the battery. cl water level. I have been noticing my battery oozing water/electrolyte. So does this mean my regulator is shot and also the reason my IGN light is on? Quote Link to comment
sdsurf Posted July 9, 2010 Author Report Share Posted July 9, 2010 new voltage regulator. All is good Quote Link to comment
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