Can you adjust the RPM on your engine yourself?

Answer

Why would you want to? It is computer controlled, so I don't see how you could.

Answer

Well, there are a couple of things I can think of. First, your low RPMs might be caused by a bad fuel/air mixture, which is often the O2 sensor which is around 50 - 100 dollars. Another thing it might be is is bad spark plugs or wires. For what you're talking about, you probably don't want to adjust the RPM level (I take it you mean its idling RPMs) however you can do so. Since your car isn't carbureted, you would have to edit your ECU, which can be done with specialized computer programs installed on a laptop which is then wired into the ECU. Those run anywhere from 200 dollars on up.

Answer

Practically speaking, no you can't adjust the idle speed. More to the point, the problem is not simply a matter of misadjustment, and if you were to somehow effect an adjustment, that could very likely cause other problems. Something is broken/malfunctioning/disconnected/etc. The thing to do is find the problem causing the poor idle. When the problem is fixed, the idle speed will fall into line.

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First answer by Benjamin. Last edit by Gary T. Question popularity: 150 [recommend question]

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