did i buy a bad thermostate ?

1987 CHEVROLET SILVERADO
176,000 MILES
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BOB PRATT
  • MEMBER
  • 1 POST
I changed the thermostate in my truck and the temp go"s from 180 to 220 back and forth about every 2 miniutes !Is that a common defect for a new thermostate???
Nov 6, 2011 at 1:17 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check and test the coolant temperature sensor could be acting-up
Nov 6, 2011 at 1:24 PM
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