CX 2.5 Starts but will not idle

[Hydraulique]

I have a 1985, Series one CX Prestige with injected 2.5 liter engine. It had been sitting for about 5 months and now starts up only if I tap the gas but runs rough, and will not idle even when run to temp. Most recently It backfired once. I have checked the intake path and all seems tight. Plugs all look ok and seem to be getting spark. Compression is great at 150. New gas in tank and I drained tank to be sure all was clear. I ran some techron in the gas to see if I could clear a bad injector- no luck. I did install a new battery before this round and I now see one yellow wire and spade connector that is not terminated on the left side near the battery. No obvious destination. Anyone encounter this situation before? Thanks!

[mickthemaverick]

Not sure what you mean by 'tap the gas' ?

[myglaren]

Not sure what you mean by 'tap the gas' ?

Blip the throttle!