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bouncing idle


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ok i've been trying to just shut up and figure things out for myself lately, but once again i'm on a tight schedule and i need some help. My spfi has been running great since the swap in the spring, but its developed some probs now. It was idling high, so i checked and adjusted the TPS to get the idle switch to close. that worked and the idle came down from 2200 to 1100 rpm. now its idling at 1100, but repetitively creeps up to 1500, then drops back to 1100, every 10 seconds or so. How should i fix that? I know i read a description of whats happening there once, but i cant find it.

 

I checked codes and am showing coolant temp sensor (swapped that out), and o2 sensor. still doing it with the CTS swapped.

 

problem doesnt occur when i have the green connectors together.

 

ok thanks for any info.

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