well i have a problem my temp gauge keeps going up and down itll be fine for a few mins and then start to rise then fall back down but never goes to hot it almost goes there i need this fixed i just put a a new water pump on it and toped my coolant off can anyone help me thanks if you can....

 

Maybe a bad thermostat? Or get one that activates at a colder temperature.

 

I would get a OE thermostat ..If you havent did a complete flush i would do that in the process.. and do a 50/50 anti freeze and water mix..

 

Sensor going bad? Not too expensive

 

Mine did that on my 95 Bronco. I replaced the water pump, timing chain and gears and put in a new sending unit for the temperature gauge and thermostat. It would warm to mid range on the gauge and then out of the blue it would rise and fall back down to normal. I replaced the sending unit again and went through 2 more thermostat before I said hell with it as long as it doesn't climb to hot and stay I'm good with it. The org. owner had replaced the radiator just before I bought it. I did notice though that when I stepped on the gas a bit I would have air noises in my heater core. Maybe it had a trapped air pocket. Anywho we drove that thing all last winter and this spring like that before we traded it in. I know that doesn't solve your problem but I guess I'm saying I wouldn't panic over it. I'm sure you'll solve the problem.

 

well i fixed it thanks everyone for your ideas they helped alot but it came to be a bad gauge i replaced it with a mechanical gauge and it heats to 195 like its supposed to
once again thanks if yall dont care help with my speedometer its dead and the odometer is dead to help plz