Part Type: A/C Condenser Fan Motor. 2 Pole Radiator or Condenser Fan Motor. 1990 Isuzu Impulse Radiator Fan Motor;. 1991 Isuzu Impulse Engine: 1.6L L4 Naturally Aspirated; Radiator Fan Motor;. 1992 Isuzu Impulse Engine: 1.8L L4; Manual Transmission; Radiator Fan Motor;.