Could it be Distributor / Ignition related or fuel leak inside manifold ?
hard to start,won't idle,no power.replaced tps & Iac valve. No change ?? on 1994 Chevrolet S10
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do you have any codes?
Not Yet,OBD I borrowed didn't fit port under dash...Minus TPS & IAC valve "codes" what other possible / likely codes are common to the symptoms ?