Question about 1986 Toyota 4Runner

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86 forerunner, 22R engine, computer malfunction?

The car has been missing at certain speeds although it is fine at full power. Definitely not the standard plugs leads rotor or cap. I have had it to several mechanics who can't find the problem, so I have ordered a new computer and a throttle positioning sensor. But - where is the computer located in this vehicle? And who does one adjust the TPS once it's installed?

Thanks, Mikaya

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A full and major tune up is requested for an old engine ...please ck the cylinder compression with the gauge should be 95 pound or moore if not that engine neded an hoverhol work

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