HELP! 88 Honda Accord Idling Very High

[HaskellBeauty09]

I recently lowered the idle (the screw under the carburetor) as much as it would go. It was idling at 2500 RPM's and when I lowered it to around 1200 but recently it has spiked back up to 2500 and I have no idea how to fix it. I cleaned the carburetor and put a cleaner into the fuel tank to hopefully help out a little bit. I can't even begin to wonder what it might be I did recently change out the fuel pump because it wasn't the right size (previous owner had installed it). Any possible ideas would be so very helpful. Thank you.

[Dr_Snooz]

Check for a vacuum leak first. Also make sure that your throttle cable is not binding.

[g.frost]

With the engine fully warmed up, take the air cleaner cover off and check that the Choke Butterfly is fully open, straight up.