1986 Toyota Pickup engine idle surge

1986 TOYOTA PICKUP
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THEEDGE
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Engine Performance problem
1986 Toyota Pickup 4 cyl Four Wheel Drive Manual
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The engine surges while idleing .... runs great just surges.. onboard diagnostics show 7 blinks.. throttle pos sensor or associated wiring... or computer .... i replaced the throttle pos sensor and ohmed out the wiring..... havent changed the computer yet...
Jul 2, 2008 at 5:50 PM
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KHLOW2008
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Hi theedge,

Check for vacumn leakages around throttle body. Is idling speed high?

Check IAC and cold start valve.
Jul 8, 2008 at 4:06 PM