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Old 12-28-2012, 12:39 PM   #15
RockinRam96
 
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Name: RockinRam96
Title: Too Much Time
Status: Not Here
Join Date: Sep 2011
Location: Shortsville, NY
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Posts: 2,699
I put a new radiator in my 12 valve last fall and noticed this to happen with my gauge. My gauge fluctuates from 190 to about 150 though. However, the water temperature never gets over 190, even in the summer pulling a 4,000 lb horse trailer. I dont' know when the last time the t-stat was changed, I dont remember if I changed it with the radiator. I'd have to check my book. Mine takes a little bit to warm up on cold mornings but when it does you know it! It has never really bothered me much.

My 24 valve has new NAPA 180* t-stat and original radiator and does not do this.

If your worried about heat just plug it in over night and start it 5 to 10 minutes early.
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