1991 Chevy Beretta ignition coil packs

1991 CHEVROLET BERETTA
160 MILES • 6 CYL • FWD • AUTOMATIC
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MRVALINTINO41
  • MEMBER
  • 1 POST
my #1 coil pack is not shooting any fire, I changed it today and it still does the same thing, it makes it sound like the plugs are bad if you know what I mean. but they are brand new. I don't have any on my debit but I will donate something on the 3rd when I recieve my funds on my retirement card promise!!!!
Jul 30, 2009 at 12:32 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
To check if a DIS module and its crankshaft sensor circuit are working: connect a halogen headlamp to the spade terminals that mate the DIS module to the coils. A headlamp is recommended here because it puts more of a load on the module than a test lamp. If the headlamp flashes when the engine is cranked, the DIS module and crankshaft position sensor circuit are functioning. Therefore, the problem is in the coils.

If the headlamp does not flash, or there is no voltage to the module or coil pack when the engine is cranked, the problem is most likely in the crankshaft sensor circuit. On most vehicles, a bad crank position sensor will usually set a fault code, so use a scan tool to check for a code. Or, check the crank sensor itself.
Jul 30, 2009 at 1:20 AM
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