I started my car yesterday and the coolant light came on, drove it to walmart picked up some coolant and topped it off (it seemed full though). Drove it around for 30-45 minutes and it was fine. Stopped to get some shell v-power, left and did a small 3rd gear pull, came to a light and the idle was fluctuating 1000-1400 back down to 1000 then 1400 etc. etc.. So i took it home looked for any obvious vacuum leaks let it cool down took it out again and had the same problem. Let it completely cool down, and it seemed like i didn't put the radiator cap on all the way.. so i took it off put it back on, drove the car and after warm up it was idling perfect just at 1500 rpms... My car usually idles pretty high - 1000 sometimes even 1100... but it just feels weird at 1500.. any suggestions? Sorry its so long, thx -Eric

 

anyone?

 

found it.

 

So what was the problem? For future reference.