My 87 fiero gt keeps overheating on me. Today after driving for 5 minutes i had to pull over because the radiator was smoking. A lot of coolant leaked out somewhere around around the radiator fan. I think the cap above the fan leaked out because of high pressure.. Maybe? What could be the problem here. The fan works properly

Replace the cap. Coolant is supposed to go to the expansion tank.....not leak out. You now probably have air in the system, so go to the Ogre's Cave for refill instructions and info on what cap to buy.

I recently replaced the cap on top of the radiator. I just bought a new thermostat. What else could be wrong? Should i replace the pressure cap in the engine..?

I don't want to be a nag...but are you sure you got the right cap? There is a lot of bad info out there about which cap to use....again, check in the Ogre's Cave.

http://home.comcast.net/~fierocave/coolcaps.htm

[This message has been edited by Gall757 (edited 08-27-2013).]

Yes i have the correct cap. What should I do next..? Im worried because it overheats just 2 miles of driving.... This is my every day driver

that's all I got.... anybody have an idea?

Are you sure that it leaked from the actual radiator cap and not the overflow tank? After a certain temp/pressure it should force the coolant into the overflow tank. To overheat that fast seems like air to me. But to leak out of the radiator cap is odd. Have you double checked the seal on the cap since you replaced it? Make sure it didn't bind or damage the ring somehow. Its not a vented cap is it?

quote Originally posted by FieroGT-987: I recently replaced the cap on top of the radiator. I just bought a new thermostat. What else could be wrong? Should i replace the pressure cap in the engine..?

Did you properly fill and "burp" the coolant system?

quote Originally posted by Gall757: You now probably have air in the system, so go to the Ogre's Cave for refill instructions ...

quote Originally posted by Patrick: Did you properly fill and "burp" the coolant system?

X3. You must purge all air from the rear half of the cooling system before it will work correctly.

If it's still overheating after being properly filled, there are several possibilities ... including radiator, hoses, thermostat, and water pump. Driving with the system repeatedly overheating and blowing coolant is not good; permanent engine damage can result.

[This message has been edited by Marvin McInnis (edited 08-28-2013).]

How do I burp the system, or get all the air out? I dont have much knowledge of this, thanks

Perhaps you missed this reference earlier.....

http://home.comcast.net/~fierocave/coolfill.htm

This should do the job in most cases...

1 Remove both caps and Thermostat.
2 Fill radiator to full and Cap radiator
3 Continue to fill at thermostat housing.
4 Install Thermostat and cap.
5 Start and run engine for 30 seconds.
6 Remove the Thermostat and check coolant level.
7 Top off if needed.
8 Repeat steps 4 thru 7 until system is full.
9 Replace Thermostat and cap.
10 Fill Coolant Reserve Tank and cap the tank.

[This message has been edited by Gall757 (edited 08-28-2013).]

Its for sure the cap and not a crack or corrision leak of the radiator?

[This message has been edited by 2.5 (edited 08-28-2013).]

Thanks a lot guys, how can i tell if its vemted?

quote Originally posted by FieroGT-987: Thanks a lot guys, how can i tell if its vemted?

click on the line of orange text, and it will transfer you to a page of information that will answer your question.

http://home.comcast.net/~fierocave/coolcaps.htm

[This message has been edited by Gall757 (edited 08-28-2013).]