1989 Chevy Cavalier Bad Coil

Tiny
CSL24
  • MEMBER
  • 1989 CHEVROLET CAVALIER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 90,000 MILES
Hello, Can a bad ignition coil cause a short in the ignition module. I replaced the Ignition Module before replacing the coil pack. I believe now that a bad coil pack caused the short in the module it self. Any help please. TY
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Friday, January 8th, 2010 AT 10:06 PM

3 Replies

Tiny
HOPSING420
  • MEMBER
Absolutely if the insulation burns off the windings then the resistance decreases allowing more amperage to flow through the coil which in turn causes more amps to flow through module causing heat and burning it out check the resistance of each coil both primary(the positive and ground connections) the secondary (primary to spark tower) and for a short to housing, coils burn out either from heat caused by bad placement by gm or because of high resistance through plug wire check resistance of plug wire about 2k ohms per foot is normal check plugs or if module is stuck in ground posistion it will burn out coil too make sure to use the lithium or silicone grease on the back of module to allow heat dissapation good luck and if you don't have the specs just measure all the coils and as long as resistance is like within ten percent you should be ok
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Saturday, January 9th, 2010 AT 8:04 AM
Tiny
HOPSING420
  • MEMBER
Absolutely if the insulation burns off the windings then the resistance decreases allowing more amperage to flow through the coil which in turn causes more amps to flow through module causing heat and burning it out check the resistance of each coil both primary(the positive and ground connections) the secondary (primary to spark tower) and for a short to housing, coils burn out either from heat caused by bad placement by gm or because of high resistance through plug wire check resistance of plug wire about 2k ohms per foot is normal check plugs or if module is stuck in ground posistion it will burn out coil too make sure to use the lithium or silicone grease on the back of module to allow heat dissapation good luck and if you don't have the specs just measure all the coils and as long as resistance is like within ten percent you should be ok
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Saturday, January 9th, 2010 AT 8:07 AM
Tiny
HOPSING420
  • MEMBER
Absolutely if the insulation burns off the windings then the resistance decreases allowing more amperage to flow through the coil which in turn causes more amps to flow through module causing heat and burning it out check the resistance of each coil both primary(the positive and ground connections) the secondary (primary to spark tower) and for a short to housing, coils burn out either from heat caused by bad placement by gm or because of high resistance through plug wire check resistance of plug wire about 2k ohms per foot is normal check plugs or if module is stuck in ground posistion it will burn out coil too make sure to use the lithium or silicone grease on the back of module to allow heat dissapation good luck and if you don't have the specs just measure all the coils and as long as resistance is like within ten percent you should be ok
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Saturday, January 9th, 2010 AT 8:11 AM

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