Ok so I just awoke the beast from a 7 year nap (was prepped and started 6 months ago for the first time in 7 years, but then another 6 month nap). 1990 IROC 305. Trouble is, she now idles around 2000-2500rpm and I don't get power till around 3500-4500rpm. Shift light doesnt come on all the time nowbut when it does come on it seems to tell me to shift around 3500-4500rpm.Always seems to be up around orange and redline to move. In 3rd gear going 30-40kmh I'm around 4000rpm. On the highway just to go 120kmh I'm in the orange in 5th!

I don't remember things being this high back in the day. Seems like everything happens 1000-1500rpm too high. Nothing has really been touched expcept oil and plug clean, air filters, rad flush and brakes. Does it just need to have the snot run out ofher more? I've had it idle as low as 1500rpm, but only when its really hot. I understand at cold start it idles high, but it should prgressivly go down with warm up. What is the normal idle, isnt it around 800-1200?

Also seems pretty gutless.

Still have to change fuel filter.

Any ideas??

 

your throttle position sensor could be on the fritz. maf sensor could be a prob as well. or anything as simple as a vac leak lol. probs like that suck. had this prob on my spirit. never fixed it tho. because it wasnt as bad as yours. sold it recently. new guys prob now.