When starting the engine, it tends to stall. Once it warms up, it normalizes but, after a while, it starts accelerating and decelerating by itself; it does never reach a stable working. The fuel pump has been replaced, injectors cleaned and fuel filter, spark plugs, timing belt and even tensor checked, but the problem persists. Thanks for your help.

Hello, I have a Lanos and its problem is that it is always powerless and tends to stall. When turning the air conditioning on, this failure is even more noticeable. I've already changed the IAC valve, spark plugs, injectors, fuel filter and pump, computer and even the idle speed connectors, but nothing changed. Can anyone help me please? Thanks.