I will try to keep this short. I would really appreciate any help you could give. I have tried to search for this but can't find anything on it. I have a 1990 accord ex with a F22A1 engine with an auto transmission in it. It shows 225K on the clock and had an engine swap (the whole K clip I belirve it's called) before i bought it. It has several problems but the one i can't seem to live with is that it always wants to idle up (grab the throttle )when I am slowing down for a light or stop sign...it will sit at a stop light at a fast idle until i put it in neutral...if i put the tranny in neutral it will rev up to around 2k then idle down again to where it should be(even when back in drive)until i step on the gas again when I have to go through the whole thing again.

Any ideas TIA

 

I have the same probem and was told it was the TPS Sensor. This sensor is on the throttle body and is a PITA to get off. Do a search on this and there are many threads on how to get it off. You may try that or try cleaning your TB and IAC valve..GL.