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Originally Posted by darin00
ok I try the 12v across input to fan and the fans work but when I unhook the Coolant Temperature Sensor and start the car they come on and the car runs ten times better but I just bought that temperature sensor not to long ago so I know its not bad and I also bleed the system agine with the fill cap off I think its air free.
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I was given the wrong CTS from a parts store once...made the car run rough as hell (ECM was reading it as temp at bottom limit, full rich)
Never assume the part is not the problem...especially if you just installed it and then had problems.
my favorite saying is "If I had a nickel for every customer who ever said "It can't be [insert part name], because I just had it replaced.."
That was the first thing I checked, and 90% of the time, that was the problem...