90 Prizm rough idle


Old 12-20-02, 03:08 PM
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90 Prizm rough idle

What causes a 1990 Geo Prizm with the 1.6L 4- cylinder (engine code 6) to idle rough when stopped with the transmission in gear. This only happens until the engine completly warms up. Summer or winter does not make any difference.
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Old 12-20-02, 04:08 PM
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Vacuum leak, engine in need of tune, bad motor mounts, dead sensor, loose parts, etc, etc, etc, etc, etc, etc, etc, etc, etc, etc.

Need more vehicle history, symptoms and maintenance attempts to fix the problem to be able to help.

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