My 2005 aveo starts just fine but doesnt sound well at all. It idols poorly and and stumbles. You can feel the stumbling when you get inside. It stalls often as well, even after I have let it idol for a bit. I changed the plugs and the old ones didnt look too fouled. The plug wires looked okay. I was told that the problem could be a bad coil. If so, has anyone every replaced one? What else could the problem be? Thanks.
try to clean the throttle body?
No I havent tried that. How is that performed?
take off the intake pipe, and use throttle body cleaner, a tooth brush, clean away.
I cleaned the throttle body thoroughly (it was pretty dirty) but it didn't seem to make a difference, the car still idols poorly and stumbles after start-up. It starts no problem, but sounds rough. Once you start to drive, you try to apply the gas but nothing happens and it feels like it's going to start. I'm starting to get a bit frustrated now and its starting to get pretty cold where I live. Any other options out there?
Check engine light isn't on? If its misfiring you should be getting a code. If its not, I'd look at cleaning up the idle air control valve.
The engine light comes on once and I awhile, but doesnt stay on. It actually hasn't come on since I cleaned the throttle body. I'll clean the idle air control valve and see what happens, thanks.
try misting the plug wires and coil pack with water while it is running, if you see sparks, replace.
i had similar problems too with my aveo, it would stutter and occasionally stall out. eventually the alternator went.
I had this same exact problem. For me it turned out to be a torn vacuum hose that leads from the intake manifold to the MAP sensor. Check those lines and make sure to replace any torn hose. This fixed the issue for me. If not, then try to get a OBD2 scanner and plug it in when you get a check engine light, the codes can point you in the right direction. Hope this helps.
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Rescued Aveo
Skate/Cutie
2006 Chevrolet Aveo