Inspect the wires going to the intake boot about 100mm from the throttle body. Give them a gental tug to make sure none to the wires will slip out of the plug.
This is a common problem that I have repaired sevral of these. This plug is called a
T-BAP sensor and reads air pressure (or lack of air)
Write back if you have questions or you find loose wire here.
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Chris Upson (oldracer95)