Join Date: Jun 2007
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DAM YOU T-STAT??? help with wierd coolant temps
Ok my truck is doing some wierd ****.
Its a 06 lbz gmc and it has 40k on it.
The temp gauge in the dash started fluctuating the other day it never usually goes above the 180? mark (the next mark up from 160) . I was towing so i considered it normal even though its never happened before.
So i unhook the trailer and go out for a bit and again the temp gauge is reading in the 12 o clock position with no load in the bed and trailer unhooked it will go from the 180 mark then to 12 oclock then back down then up again then back etc etc. So I check the coolant level its perfect check coolant color again perfect.
I then realized i can monitor coolant temp through my six gun so i put that on the gauge will read in the 12 o clock position but the six gun will show a temp at 180-186 max this on the highway with 38-50 degree ambient temps.
I dont know where the hell to start because normally if its a tstat it gets stuck open not shut??? Could it be the sender?