Not installed properly? operating water pump in reverse direction?
Try changing the themometer
If the Chevy Celebrity radiator is smaller that the Saturn radiator it might well overheat from not enough cooling capacity. If the Chevy Celebrity radiator is the same size or larger than the Saturn radiator I would think it would not over heat.
the serpentine belt may be slipping then grabbing as the tranny shifts gears.
Yes, it is possible that a cracked serpentine belt will cause poor fuel economy. Many people will have significantly improved gas mileage after changing the belt.
Assuming it did not overheat before you replaced thermostat and water pump you may have installed the thermostat backwards. It is also possible the cooling system wasn't refilled properly and was air bound.
It would help if you asked a question or described symptoms instead of being so vague that changing the tire might be the correct answer.
it can if cat converter is plugged up you can check by letting run at idle and keep checking the exhaust to see if it is turning red
checking fuses would be a good place to start changing serpentine belt would not have anything to do with your problem
You would use it as in explaining types of snakes or describing a snake using serpentine. Ex: That serpentine is huge. This King Cobra , serpentine, is bigger than my whole body.
I would suspect that the belt tensioner is weak. If there are a lot of miles on the car I would replace it. I hope this helps you. Mark
No. Remove the passenger side tire then the wheel well. Should give you a nice easy shot at replacing
You had to have disrupted something else while you were changing the serpentine belt. I've driven a short distance without the belt at all so just changing it shouldn't have any side effect like not starting. Check all your electrical connections and be certain you didn't dissconnect anything while you changed the belt. It's possible that your battery is dead if you drove a distance without the belt in place. The belt is needed for the alternator to charge the battery but this would be the only way I can think of that changing the belt would cause your car not to start.