ing-schu@online.no Posted June 23, 2008 Report Share Posted June 23, 2008 Then how come manuals in newer cars warn against regular jumper cables? Believe me, this has happened to many owners here, they assist others and can't start their own car afterwards due to fried ECU and whatever. Sparks DOES cause high frequency voltage peaks. Why do you think these sparks disturb all kinds of radio equipment including TV's? Quote Link to comment Share on other sites More sharing options...
enginph Posted June 23, 2008 Report Share Posted June 23, 2008 Then how come manuals in newer cars warn against regular jumper cables? Believe me, this has happened to many owners here, they assist others and can't start their own car afterwards due to fried ECU and whatever. Sparks DOES cause high frequency voltage peaks. Why do you think these sparks disturb all kinds of radio equipment including TV's? What do they recommend? A little resistance from the jumper cable would be good, thats why i use chasis as the ground to get some resistance. You cannot pass the max voltage in the system by "properly" connecting cables. If you connect wrong you can only go upto the sum of two voltages. That spark is a voltage step that has high frequency component for sure, and very high current, but not high voltage. Longer cables will have larger inductance and cause weaker sparks. That high frequency current generates an electromagnetic field that interferes with other receivers around like tv, radio and such. Delicate electronic components have fermi cages around them shielding from electromagnetic fields. Any integrated circuit has ESD (electrostatic discharge) protection circuitry for most input/output pins. Have you ever seen sparks from yourself? When taking off a woolen pullover? You charge yourself with say 1000V above your cars ground, when you touch a metal in the car you will see the spark and you will step up the voltage. If ICs dont have ESD they will be fried before leaving the fab, let away during regular use. High current will also convert water to hydrogen and oxygen inside the battery. If it has a leak and most very old batteries have, the whole car can be fried Only ways to fry ECU are if one car has a bad regulator or two cars have different voltages or improper jump start. When i give jump start to an old car i dont start my car since i dont trust its regulator. Quote Link to comment Share on other sites More sharing options...
ing-schu@online.no Posted June 23, 2008 Report Share Posted June 23, 2008 Ok, so what you're saying is the automotive industry not to mention car assist companies are wrong about this being a problem then. How come they've since long stopped using regular jumpercables? I'll give you the answer. It was bad for business being claimed huge repair bills. Quote Link to comment Share on other sites More sharing options...
///BHRpowered Posted June 23, 2008 Report Share Posted June 23, 2008 mine only lasted alittle over 4, lucky died at home in the garage one morning the red top however is still going strong Quote Link to comment Share on other sites More sharing options...
MazdaMomma Posted June 23, 2008 Author Report Share Posted June 23, 2008 Oh ok, if your going to put HID's maybe its worth it to find the projector headlights from the new model to put on yours but of course. Quote Link to comment Share on other sites More sharing options...
Troutman Posted June 25, 2008 Report Share Posted June 25, 2008 Then it's agreed. Quote Link to comment Share on other sites More sharing options...
SteveSter Posted June 25, 2008 Report Share Posted June 25, 2008 Yup, but the SC for it would also be a great addition just kinda expensive. Quote Link to comment Share on other sites More sharing options...
Troutman Posted June 26, 2008 Report Share Posted June 26, 2008 As long as it's done properly; HIDs in non projector headlamps are becoming something of a plague. Quote Link to comment Share on other sites More sharing options...
MazdaMomma Posted June 26, 2008 Author Report Share Posted June 26, 2008 Yup, but the SC for it would also be a great addition just kinda expensive. Yeah, very expensive, but ... Quote Link to comment Share on other sites More sharing options...
Troutman Posted July 10, 2008 Report Share Posted July 10, 2008 The Bad Kitty appears to be up to something. Quote Link to comment Share on other sites More sharing options...
MazdaMomma Posted July 11, 2008 Author Report Share Posted July 11, 2008 Quote Link to comment Share on other sites More sharing options...
Troutman Posted July 14, 2008 Report Share Posted July 14, 2008 My body shivers with rage as I sharpen my sword for a night of pure bloodshed. Quote Link to comment Share on other sites More sharing options...
AngelOfDeath Posted November 1, 2008 Report Share Posted November 1, 2008 she is always up to something Quote Link to comment Share on other sites More sharing options...
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