| Maybe this will help? 3. Bleeding the system (1990 FSM page ST-7). It is important that you always bleed the PS system before bleeding the HICAS system. Frequently check and maintain proper PS fluid levels during any bleeding process. Fluid levels (NA, 1990 FSM page ST-7) (Twin turbo, 1990 FSM page ST-43). Note: It is important that the PS system has been bled. The system needing to be bled can also have an effect on the HICAS system and can cause the HICAS indicator to come on. If the system needs bleeding it can cause intermittent or constant hard steering issues. Here is a simple process to bleed the PS system. a. Start the engine and let it warm up to operating temperatures (140-176 degrees). b. Insure you have a proper PS fluid level (using ATF Dexron Type fluid). c. Place the front of the car on jack stands so that the front tires can clear the floor. d. REV the engine to 1000-1500 RPMs and hold it there. e. Turn the steering wheel very fast all the way to the right until it hits the stop limit. Hold it there for no more than 15 seconds. Watch your time on this. You do not want to exceed the amount of time as damage may occur to the PS system. f. Turn the steering wheel very fast all the way to the left until it hits the stop limit. Hold it there for no more than 15 seconds. Again, watch your time on this. You do not want to exceed the amount of time as damage may occur to the PS system. g. Repeat steps e and f at least ten more times to insure a good system bleeding. Symptoms of incomplete air bleeding. 1. Bubbles in the PS reservoir. 2. A clicking noise in the PS pump. 3. A buzzing noise in the PS pump. Note: Since most of the common problems we experience with the PS system are caused by something other than the bleeding of the HICAS system I am only going to recommend that you use a FSM for how to bleed the HICAS system (1990 FSM page ST-48) instead of going into it here.
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