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You could have air in the cooling system from changing the
cts or a bad sensor out of the box.check that your coolant
level is full and free of air. also check that it is the correct
sensor.is there a check engine light on? if so post codes.
does the car run at normal temp?What do you mean when you said they will not come on? I would find out the temperature they’re supposed to come on, then test that out. I have a 2002 Pontiac Grand Prix. I got it in the fall so I haven’t had a chance to see if the cooling fans work. But I did try the A/C, and the fans did not come on in the minute or so that I let the A/C run, So I don’t know if they always will.
I figured it out the plug that goes to the temp sensor was old and the wires were loose… but now I have a cylinder 1 misfire and injector 6 open circuit I know it prob needs a tune up but what could the open circuit be?
If an injector has an open circuit, the solenoid either has a fault, or the connector/wires came off. Check to make sure that injector 6 is plugged in, and that the wires are in good shape. They are thin wires so don’t bend them much.
Here’s a picture of the wires/connector from when I did my valve cover gaskets:
Glad you got the coolant temp sensor sorted out. As for the misfire you’re probably on the right path by starting with a tune up. To answer your question an ‘open circuit’ is like something is unplugged or dead. You may want to check and see if the plug for cylinder #6 is unplugged or if there is damage to the wires. In fact I would check all the wires just to be on the safe side.
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