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1983 Porsche 944 coil goes bad, just replace coil

1983 Porsche 944 coil goes bad, just replace coil and ran great then 4 days later coil is bad again. What would caue the coil to go bad

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What do you mean by bad? Does it measure a different resistance.

Here is the thing on coils, I do not understand why they are not made differently, but

coils are to be run at a lower voltage, often. some like older cars, no more than 8 volts....Think about it...That is a LOT of resistance to scrub down to 8 volts, hello? the system is 13.8 to 14.9 volts NORMAL.....

But I digress.

These resistors fail and the amount that they should do, they cannot do.
One thing that I do as a diagnostic test is to buy a coil, any coil with an INTERNAL resistor. So, I can put full sysytem voltage to it....If it lasts, investigate the viotage available at the coil.


Posted on Sep 13, 2009

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