My 88 Accord lxi surges a few hundred RPM when cold. Have checked many sensors, seem to check good. Also sometimes acts flooded when started warm, ( wants to die ), have to keep RPM at about 1500, till engine clears out and will idle. Only 138K miles. Also any tips for better MPG ??

Thanks

 

check your idle control valve

 

my 90 has been doing the same. I took the IAC valve off and cleaned it's ports and screen. It helped for a bit, now it's doing it again. Do I need to clean out the ports on the manifold too? I've got a ton of miles on the car.

 

No you probably have to REPLACE the idle control valve. I had to do the same on my 98 accord 4-cyl. at 106k. Cleaning it out hepled for about 3 days and then the idle started jumping around again so i replaced it and everything is perfect.

 

thanks, i've got a good one on the H23A1 that I'll use until the engine swap happens.