KYB is d oem shocks for Nissan. Bought these for my cube and works fine. Available at most parts stores, cant remember price tho, tink was about $250 ea. Bought mine by Pamela's auto n tumpuna rd Arima.
Got this problem with my cube already and was told its d throttle relay needed changing. didn't get relay even massy dnt hav it but after i did the e throttle learning it workin fine.