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I have no problems when the car is still warming up, or when driving. But after the engine warms up my trims jump to 20% when idle. Could not find any vacuum leaks. I also took it to a local mechanic to get it checked, but nothing. Told me not to worry about it :silly:
What I noticed recently, is that when the gas pedal gets tapped lightly, the fuel trims go back to 0. What could it be then? And what should I tell to the mechanic?
Does the 20% fuel trim correspond to switching to CLOSED LOOP? Does tapping the throttle throw it into OPEN LOOP? Do fuel trims respond to an additional fuel source, like propane?
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