after you disconnect the tps per instructions, make sure that your idle is dead on. Sometimes it ends up being slightly higher or lower. Simply turn your idle screw to get it right about 850 rpm. Also make sure car is fully warmed up. Some people use the black wire on the rear of the engine as the timing light hook up but i prefer to remove the coil and use a spark plug wire between the coil and plug. Also dont use an electronic advance light. It doesnt work well. Just use a crappy old light from advance hardware.
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