1989 Mercury Cougar transmission question

1989 MERCURY COUGAR
100,000 MILES • V8 • 2WD • AUTOMATIC
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1989 Mercury Cougar. I found a round plastic piece about 1 1/2 " long with a rubber O-ring on it floating in my transmission pan. It looks like a plunger or fishing bobber. Do you know what this is or where it goes? Thanks.
Nov 19, 2010 at 11:46 PM
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When your car was assembled at the factory, the round plastic piece was used in place of the dipstick to keep foreign objects out of the transmission. On the assembly line, the dipstick tube is inserted pushing the round plastic piece into the transmission. It serves no purpose after the tube is installed.
Nov 19, 2010 at 11:49 PM