My heater is not blowing any kind of air right away what is wrong with it?

1997 MERCEDES BENZ C280
216,000 MILES
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BKITTSON
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Sometimes on bumpy roads the heater will start out of nowhere, or when I hit a good bump it will start. The last time it worked was when I popped the hood and banged around on something with my hand then it worked. Help its cold in this Montana winter!
Nov 21, 2011 at 5:10 AM
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JACOBANDNICKOLAS
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Check for loose wires to the blower motor. Chances are one is loose or has a bad connection.
Nov 21, 2011 at 5:12 AM
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BKITTSON
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Where is that located at?
Nov 21, 2011 at 6:54 AM
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RIVERMIKERAT
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The power connector is usually against the bulkhead on the passenger side. The ground is usually in the passenger compartment under the dash.
Dec 31, 2011 at 8:34 AM