Quote:
Originally posted by vkykam
Wouldn't the lower octane potentially cause knocking, which in turn would cause the check engine light?
VK
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Naw, if the knock sensors were bad the computer would have no way of knowing it was knocking. If they're o.k. they'll send a signal to the computer until it retards the timing far enough to make the knocking quit. Usually most computers retard the timing in three degree increments until it quits. Generally more noticeable in mpg than performance.