Wow that's crazy! I had no idea stant thermostats were that bad. My previous auto teacher at college told me that at best stant thermostats are unpredictable. I've always bought them and never had problems.... i'll hesitate to ever buy one again though now, especially after hearing your problems tb. I'm glad you got that figured out tb!
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previous name: 84stangLX
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT