I just finished my mpfi swap in my 90 civic std... i swapped a complete d16a6, i have all the grounds hooked up now and it rolls over... now its throwing a code 20 at the ecu... what are some of the most common mistakes that are made and cause the code 20...? I also relocated the battery to the rear if that makes a difference, but it shouldnt I used Og wire to a distribution block and to the starter= fusebox... HELP PLEASE


Modified by wreckeddc4 at 2:58 PM 3/20/2008

 

it sounds like it goes on the "bolt" that is on the starter, its your main power for everything. it slides onto the bolt and there is a nut that goes on it. good luck

 

Like was said above it could be the main wire for the starter.The ground for the thermostat housing is right around that area also.Its alot smaller but also has a ring terminal on it and the car will not start if its even loose a lil bit.
On another note I did thesame swap in the same exact car.What a world of difference.The only other thing I would suggest is if you didn't get the si tranny to do it.Best of luck buddy

 

Thats not it, i have that hooked up, its smaller, similar to the wire that goes into the under hood fuse box but it is closer to the motor on the harness...

 

Thermostat housing ground sounds like my best bet..... would there be voltage showing at it? I put my multi meter on it and it was showing like 6 volts, if its a ground maybe its because the current is trying to exit there?