Revs up problems
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Hesitates, stall, check engine. 
Solved
Chevrolet Aveo 2007 Check engine 202000 miles
Had a problem with the air channel the plastic part after the air filter. Found had a cut that wasn't visible unless I took it apart.
I replaced that part and the car got better.
The initial symptoms basically was the check engine lights up and doesn't blink, the car's rpm goes up and down on it's own, some times it stalls.
After changing the part, it happens WAAAY LESS. I had someone test the voltage around the engine body and the output varies from place to place. The check engine lights after some time of the AC being on.
I replaced that part and the car got better.
The initial symptoms basically was the check engine lights up and doesn't blink, the car's rpm goes up and down on it's own, some times it stalls.
After changing the part, it happens WAAAY LESS. I had someone test the voltage around the engine body and the output varies from place to place. The check engine lights after some time of the AC being on.
CommentEngine light check
Chevrolet Aveo 2015 Sedan 112583 miles
The Engine light is on and the idling is going up and down.
8 reports
When you stop it switch off and when you start it start fine and it decreases the speed from 80km but above 100 it's fine
CommentThe revolutios go up and down
Chevrolet Aveo 2014 sedan, standart 1.6 lts 118060 miles
When I run my aveo after a time the revolutions go up and down but when I hit the breaks and i do a total stop, the revolutios got normal, not always do it but some times go up to 4000 revolutions
1 report
Hi mate, check the IAC, i have an Aveo and time ago happened same, only replace the IAC Valve and solve the problem.
CommentProblems with a Aveo? Share them
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Thank you!
Fixing those fixed the problem with the check engine light and the high rpm, but not the stalling after a cold start. Turning the car off for a minute seems to help with the stalling now.
However I think due to the cut in the air hose has lasted over a month, the might be a clog in the injectors.
It seems tht the hoses connected to the EVAP were not connect the right way. The car was collecting oil vapor and gas vapor and directing them to the wrong chambers.
Problem solved instantly after correcting them. Car is now amazing.