heating

NOTE: I actually don't own a Grand Prix - a friend of mine who doesn't use a computer has one and asked me to post a message for them to help them troubleshoot a problem they're having. So any replies might take longer than usual since I only see them a couple of times a week. -- I'm trying...

Hi - I have a 2002 Pontiac Montana. We discovered it was overheating suddenly (after an oil change), but couldn't figure out why. Then we discovered this part (in the attachment) with a kink. My husband has since fashioned a temporary fix, but we don't trust it to do the job forever...

Engine still heating up. Flushed coolong system, Changed coolant temperature sensor, No leaks, changed head and intake gaskets. Fans work good.