I am working on a 2001 Kia with 2.4 liter engine.

The check engine light (MIL) comes on
intermittantly. The code is P0320, "Ignition or
Distributor Engine Speed (RPM) circuit
malfunction."

When the MIL comes on, the car is running rough on
only two cylinders.  Unplug the first coil, and
the rough running continues undiminished.  Unplug
only the second coil and the engine dies.  This
narrows the problem to the first coil.

Swap the two coils, and the problem does not move
to the other cylinders.  So it is not a problem
with the coils, itself.

Sometimes the engine runs well.  This problem
arrises intermittantly.

Anybody know what could cause this?

Jim S.

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