fluctuating temperature gauge in a car, no noticable leaks,

I just bought a car from a friend and they had told me that the head gasket was replaced ahead of schedule, which was good news because my suzuki's head gasket blew and I had a whole bunch of overheating problems. Well this is a 1999 Dodge Neon. I started the car after stopping about a half an hour...

the temperature guauge on my hyundai elantra stays on cold after 10 minutes of idle, when i start driving, it stays on cold for about another 5 minutes then goes to normal. then it instantly goes back to cold for a couple of minutes. then it fluctuates from normal to cold. when i check the hoses,...

Hello, my problem is simple to describe. Lately my car temperature gauge fluctuates. When I start the car and drive it for a few minutes, the engine is cold but as it starts to warm up, it goes to the M in "Normal" then up and up to almost hot but then drops back down to the middle. But then it...

I have a 97 Ford F150 and I've been having problems with the engine overheating, or so I thought. Every time I drive the temperature gauge just shoots up to the hottest it will go; most of the time it's just when I'm slowing down or completely stopped. I've taken it to get the radiator flushed,...

I have a 1988 Nissan Pathfinder 4x4. The gas gauge and the temperature gauge would stop working at the same time when the car warmed up. They both would come back on periodically and then off again. Currently they have not come back on in about 3 months. How do I fix this problem?