The 5S-FE was available in several variations each being distinguished by the valve cover design. The first gen, introduced in the 1990–1992 Celica GT/GT-S and MR2, had a power rating of 130 hp and 144 lbs-ft/torque. the second Gen was introduced in 1993 with the fifth Gen Celica ST184, and continued on throughout the sixth Gen Celica ST204. The second gen was also used in the MR2 (SW21) and Toyota Camry/Scepter (XV10) series and had a power output of 135 hp and 145 lbs-ft/torque. It had slightly less aggressive cams, no cold start injector, a knock sensor, and more aggressive tuning to give it slightly more power. In states that had adopted California state emissions the 5S-FE was rated at 130 hp and 145 lbs-ft/torque due mainly to emission equipment used in order to meet the emissions regulations of those states. The 3rd Gen was the last 5S-FE engine to be produced and was used in the 1997–2001 Camry XV20 and 1999–2001 Camry Solara; however, from 1996 onwards, the engine received a crank angle sensor instead of a cam angle sensor for a smoother idle. From 1997 to 1999 the engine produced 133 hp at 5,200 rpm and 147 lbs-ft/torque at 4,400 rpm. From 2000 to 2001, the engine received modest improvements to increase power output to 136 hp at 5,200 rpm and 150 lbs-ft/torque at 4,400 rpm. The 5S-FE was replaced in all applications by the 2.4 L 2AZ-FE.[WIKI]
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