sdokter Posted February 3, 2009 Share Posted February 3, 2009 What would cause the ballast resistor to get hot. Link to comment Share on other sites More sharing options...
BLHTAZ Posted February 3, 2009 Share Posted February 3, 2009 I have never checked one, but it would seem normal for it to get hot to me :dunno: . You have a ceramic block with wires running through it and electricity traveling through constantly to the fuel pump so it's bound to get kinda warm. I'll have to check mine later to see if it is hot after driving. Link to comment Share on other sites More sharing options...
mvusse Posted February 3, 2009 Share Posted February 3, 2009 The fact that it acts as a resistor. Amperage going through multiplied by voltage drop across equals wattage of heat generated. But as I don't have one, I can't measure either. Link to comment Share on other sites More sharing options...
HOrnbrod Posted February 4, 2009 Share Posted February 4, 2009 The fact that it acts as a resistor. Amperage going through multiplied by voltage drop across equals wattage of heat generated. But as I don't have one, I can't measure either. It not only acts like a resistor, it is a resistor, a 1 ohm wire-wound voltage dropping resistor. :D It is relayed into the fuel pump circuit after the engine starts and drops the applied 12V a couple of volts supossedly to make the pump quieter and last longer. It is normal for it to get hot, thus the porcelin body to better dissipate heat. :cheers: Link to comment Share on other sites More sharing options...
BLHTAZ Posted February 4, 2009 Share Posted February 4, 2009 WOW!!! :eek: :D You mean I actually got something right that is electrical related... :banana: . I am bound to learn a few things here I guess ;) :clapping: Link to comment Share on other sites More sharing options...
jbhill Posted February 4, 2009 Share Posted February 4, 2009 it actually goes to the hot wire on the coil pack to keep it from burning up. Link to comment Share on other sites More sharing options...
Eagle Posted February 4, 2009 Share Posted February 4, 2009 it actually goes to the hot wire on the coil pack to keep it from burning up. No, it goes to the fuel pump. You're thinking or older Mopar cars that used a resistor on the coil. Link to comment Share on other sites More sharing options...
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