I can't figure this out hopefully someone will know about this because I can't find anything on it. I have a 94 prelude si with an h22 swapped in it and I was driving down the road when the speedometer stopped working well maybe a minute after that my check engine light came on. Now does anyone know what that could mean or what's going wrong with my car because I'm stummped.

check what code your car is throwing by jumping the wire behind your sterio and climate control, the wire has to be accessed in the drivers footwell it should just be tucked behind the the plastic it has a blue connector on it and the connector has 2 holes in it, take a piece of wire or a paper clip if you dont have wire(wire works the best) and put one end in each hole, turn your cars power on but dont actually start the engine, and look at the engine light and count how many times it flashes(long flashes are in incriments of 10 and short flashes are ones, so 1 long flash and 2 short flashes is 12 and 4 long flashes is 40, count them and go here Troublcodes.net Trouble Codes OBD & OBD2 Trouble Codes and Technical info & Tool Store. By BAT Auto Technical
hope i helped dude oh and make sure you have the paper clip or wire in the wire the whole time otherwise it wont work and if you have 2 problems it will flash for the first one pause for like 5 seconds then flash again with another code but if it comes up with the same number thats all thats wrong, and last but not least if your engine light turns on then turns off when you turn your key and wait a second its because the wire or paperclip isnt in the right ports on the blue connector hope i helped
-HondaDavid