My cooling fan starts runnin the second my car turns on, and stays on for a few minutes after i shut it off. The temp gauge also rises pretty fast as soon as I start it, even if its cold, and the heat blows cooler than usual. I have coolant in the systemso im not sure what else it could be.
Any Ideas will help alot. thanks

Thermostat prolly.

would the thermostatcause the fan to run right when the car is started?

Numerous things can cause it, but the most common would be the thermostat and would explain why the heater isnt as warm due to the engine not heating up properly.

I would replace the thermostat and ECT and call it a day.

Here's an FYI to everyone who has had this problem. I have read countless posts and followed much useful advice. I changed the temp sensor, the fan control relay, the maf sensor and the fan ran continuously. I finally found that none of these parts had been bad. When changing the temp sensor, I failed to notice the tremendous amount of corrosion inside the positive terminal of the sensor connector. Cleaned this, put dielectric grease on it and it sured the hard starting, the fan running and the lack of boost from the turbo. $250 in un-needed parts and several hour in wasted labor all because of corrosion in a connector. Always check the simple things first! Apparently a bad signal from the temp sensor causes multiple problems such as hard starting, fan override that forces the fan to stay on in 'safety mode' and it also tells the ecm to kill the turbo boost. Hope this helps.