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Questions and Answers

Toyota Camry Is Eating Ignition Coils

Q. Hi: I just bought this car a couple of months ago, I know the past owner, also the original owner. The last owner had the ignition coil replaced by his mechanic about three months before he sold the car to me. While driving the car home, about half way through a 6 hour drive, the car died. The next day a local mechanic diagnosed a bad coil.

Toyota Camry Is Eating Ignition Coils

After replacing the ignition coil, I finished the drive home. Just a week ago, while driving to an event, the car died again. I had to stay overnight in a motel, but was able to get a local Pep Boys to repair it in the morning, the coil was bad. Is there any reason for this coil to keep going bad?

  • 1990 Toyota Camry
  • 2.0 liter 4 cylinder engine
  • 5 speed manual transmission
  • 130,000 miles

Thanks,
Gary

A. Usually this happens when there is a high resistance in the pick up coils in the distributor. You can check the resistance with an ohmmeter easily enough.

Toyota Camry Is Eating Ignition Coils
  1. Disconnect the wiring connector near the distributor.
  2. Connect one end of an ohmmeter to the G terminal. Connect the other end to the G- terminal.

G Pickup Coil Resistance: 130 to 210 ohms

  1. Connect one end of an ohmmeter to the Ne terminal. Connect the other end to the G- terminal.

NE Pickup Coil Resistance: 130 to 210 ohms

Another thing to check is the charging system to be sure it is not overcharging. At the + terminal of the coil there should only be about 13.5 volts.

Additional Information provided courtesy of AllDATA

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