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Why does your 2001 Mercury Grand Marquis buck or misfire when under a load mostly when climbing a hill but taking it out of overdrive seems to reduce the problem?
Wiki User
∙ 18y ago
You solved the problem yourself. DO NOT USE overdrive unless you are on an open road and driving over 55 miles an hour. If you do you could cause the transmission to start slipping and pay thousands to repair expectially if you are hualing a load.
Wiki User
∙ 18y ago
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