HELP ME!! Car is running really rough on startup!!
I have a 2003 ZX3. Over the last couple months occasionally on start up, mainly during the cold winter, my car would start sputtering when it starts up and the RPM's would go up and down between 1,000. The keyword here is, OCCASIONALLY. It would do it on some days during the week. But since winter has arrived it has became a lot worse and does it almost every time in the morning and at night when i dont drive it a lot. I had an engine light come on during the summer and it was an EGR code which i replaced. But as of now, THERE IS NO ENGINE LIGHT. I also replaced very recently, new spark plugs and wires, fuel filter and all 3 mounts. I also brought it to mechanics for a tune up including fuel injector cleaner. I thought it might be the ICV starting to go but wasn't sure. It runs very rough on start up, i can feel the exhaust shaking and hear it sputtering, it goes away after i stop somewhere and go to startup the car again and come back like an hour its almost as if nothing is wrong. Then the problem comes back on when i start the car up the next day it will run into the same problem. Right now, it is really stumped me i have no idea what is wrong but it seems serious. If anyone has had the same problem and can help i would appreciate it, thanks!!
Last edited by Dardas; 01-01-2013 at 11:22 AM.