2000 Hyundai Elantra overcharging alt?

Asked by Jul 15, 2014 at 08:24 AM about the 2000 Hyundai Elantra

Question type: Maintenance & Repair

We have replaced the coil pack in this car 2 times (3 counting today) since May. What
would cause the coil pack to fry?

5 Answers

115,885

Wrong spark plugs, resistance in wiring too high, bad grounds and excessive voltage. What is your alternators voltage output? It should range between 13.8 to 14.7 volts.

We checked the voltage output and it was 13.7

115,885

That is at minimum, better have the system tested to see if it responds to loads, I haven't seen any coils go away due to under voltage but there is always a first time.

so what should I be testing? Would the voltage regulator spike and cook the coil without blowing a fuse?

115,885

Take it to a shop you trust and have it tested tell them what you found. You may have more than just 1 problem, ie grounding failures, corrosion in the wires.

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