1st Gen Protege/323/GLC General/Maintenance Discussion for 1990-1994 Models (BG Chassis) and 1981-1989 GLC/323 Models (BD and BF chassis)

oscillating idle

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Old April-30th-2003, 12:38 AM
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oscillating idle

When I stop at a light and the engine drops to idle, sometimes the tach goes back and forth from just below 1K to kind of rumbly around 500.

I recently advanced the timing a few degrees (rotated the distributor). No knock or ping, a little bit more torque...and I hadn't ever noticed the oscillation before this.

Any ideas?
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