Fan not working sometimes causing overheat

Tiny
EMBRATOR
  • MEMBER
  • 1998 MERCURY MARQUIS
  • 4.6L
  • V8
  • RWD
  • AUTOMATIC
  • 130,000 MILES
HI:
my 98 marquis have overheating problem.
the fan low speed never come on. Changed the low speed relay. No luck
high speed kicks with a/c but not all the time. And sometimes shutoff and over heat + compressor smoking from heat. Shouldn't it turn off compressor with the fan :(

tried to operate the fan manually with battery jumping cables the low speed is working and high speed is working. So I don't think it's a bad fan. Something not telling it to start.

. So what to do?Pls help me
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Wednesday, August 12th, 2015 AT 11:25 PM

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Tiny
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Friday, August 14th, 2015 AT 9:27 AM

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