My car was over heating I went and change the thermostat it was shot. went back to normal.

Sounds like air trapped in system

Make sure you have genuine filters. Mine was doing exactly the same thing after a service - had a non genuine filter fitted - as soon as the genuine one went back on hasn't done it since...

most likely it was a blocked fuel filter.
get it plugged into a diagnostic to give you a code.
or once is cleared by the computer it might not come back at all

Could be the thermostat. I know nothing about cars but I noticed my 2000 Grand Prix temp gauge was not going to the normal level. My wife drives this car so I didn't notice it for a month or so. Eventually the Engine light came on. Took it to Autozone and the code came back as P0180... (1) low coolant (2) bad thermostat (3) enginge fuel temp sensor. They used a code reader that was about the size of an Ipod nano.

Coolant was okay, so took it to my mechanic. His netbook sized computer showed it was the Thermostat. He reset the codes and the temp guage went back to normal. Was short on $40 for the fix at the time, so I parked the car and promised to bring it back in 3 days. Went out and checked the car a day later at 25 degrees outside without starting the car... gauge still sitting at the normal level. No question it's the thermostat. That car will not be driven again until T.stat is fixed in 2 days.

the first thing to try is turning the heater upto full heat(a/c off)if the temp guage goes down THEN CHANGE THE THERMOSTAT...(hot oil,if too hot, is thinner than the normal sae rating so the oil pressure will be lower.otherwise no real problem.

the reservoir level changes with the engine temp. the smell of anti-freeze would probably point to the heater core leaking.

Its not the thermostat. If it has a carburator Go to the fuel line and put 3 clothes pins on the fuel line. It will get rid of heat. I would love to know if it works out for you. Good luck!

it sounds as if you need to replace your thermostat

you might need a new thermostat

Sounds to me like you have a bad thermostat. If you know how to change it you can give it a shot. If you dont know what I'm talking about, take your car in to a mechanic and tell em to have a look at your thermostat.