I have an 87 Accord with fuel injection that always had a fast idle, and a surging problem when warming up. Both problems went away when I replaced the fast idle valve, which is bolted to the rear of the intake manifold just downstream of the throttle body.
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you need to lower the idle down to around 750 rpm. there are to cables that go to the throttle body/intake. there is a little clip they sit in along with a nut on each side of the clip. loosen the nut on the side they come from a couple turns. you should notice the idle drop and you just have to fine tune it from there.
One common problem is a vac leak or a sticking throttle plate. The computer controls idle speed by how much air is allowed into the intake. The idle control valve could be sticking even tho you have cleaned it, or have a faulty motor.
It's your "slow ideal valve" It's located on the intake manifold, near the driverside. There are 2 screws on top, remove the screws, Next get a flat head screw driver, now your gonna see a white plastic like saucer shape piece in there.. Now your going to turn the saucer shaped piece clock-wise and your screwing it back down, out the lid/cap back on, tighten the 2 lil screws, and start the car, the up nd low idle is gone..!!!!
you have 2 idle settings. one is for cold and one is for after the engine has warmed up. So find the scew that goes to the warm engine idle. turn it down and your set. You might need a Chilton to find what you are looking for.