Code 43 Please Help!

[Sargento69]

I had a b20b swap done to my 90 crx. Now the ecu (off of a 91 integra) is giving me code 43. i know it has to do sumthing with the fuel. could it be that the stock gas pump used to be for a d15, cant handle giving enough fuel to a b20b???? can sumone please help... Thanks!!

[4G4D Store]

How are you counting the blinks. Cause I didn't think OBD-0 ecu's had more than like 20 codes. It could be codes 4 and 3 if it blinks 4 times, then pauses and blinks 3 times, then back to 4, etc etc. I could be wrong, but let us know.

[Sargento69]

it gives me 4 long blinks and 3 short ones. last time i checked thats code 43.

[Ones&zeros]

yeah if it pauses then its another code.

[Ones&zeros]

Manifold absolute pressure, and crank angle sensor imo. now thats if there is no code 43

[solja84]

Originally Posted by Sargento69

I had a b20b swap done to my 90 crx. Now the ecu (off of a 91 integra) is giving me code 43. i know it has to do sumthing with the fuel. could it be that the stock gas pump used to be for a d15, cant handle giving enough fuel to a b20b???? can sumone please help... Thanks!!

Hey man...i hear you about that problem and i can help...if the code is a 43...if its 4 long blinks and then 3 short following it is a code 43...you've got the correct code...i've been a mechanic for almost 2 years now...and i have seen this code probally 3 times....and the books says...fuel management...well forget that! the first time i got that code i replaced everything...fuel filter, changed gas, cleaned injectors, clean throttle butterfly, i did a ton of stuff trust me... and it still ran all GRAWGY....well buddie...your in luck...it took me a while and nobody would help me...but i figured it out...and all my fellow technicans applauded me when i figured out how to fix it...
and now im one of them officially...lol...
well neways...i bet your dyin' to know what it is...
its your O2-SENSOR!
DID YOU GET THAT
02-SENSOR!
OKAY!!!
trust me, change that out...and it will run fine...
i know it doesn't seem like an 02-sensor problem, but somehow it deals with the fuel management...
well get back to me if that worked...

[solja84]

so did it work?

[Sargento69]

thanks dude! let me change it out and ill post on here if it worked.. plus imma be posting pics of my b20b in here like this week so stay tuned!!! once again thanks for the help.