Definition of the reasons of this malfunction requires the special diagnostic equipment therefore in this case address on the service station specializing in car repairs with systems of injection of fuel.
However it should be noted that most often this malfunction is caused by failure of the regulator of idling or a suction of foreign air through leaky connections of the hoses attached to throttle knot. If replacement of the regulator (see. "Check and replacement of the regulator of idling"
) and tightening of collars of hoses was not succeeded to restore idling, address experts.