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Mechanical Problems & Technical ChatIf you've got a problem you just can't figure out, a noise you can't diagnose, or a check engine light that won't go away, ask about it here!
The only thing on my engine that looks exactly like that rubber plug would be my fill hole for the automatic transmission. My plug has a dipstick on one side and a handle on the other. Is your car an automatic or a standard? It's more than likely a fill plug for your tranny.
Duane