hello all,
has anyone ever had a 43 fault code, its driving me nuts i cant figure out what it is, or whats causing it, in the code list it says its a fuel problem
when the engine light comes on nothing happens to the engine in any way and drives fine
my set up
91 civic vti, t3
afc2,440cc,btm stock block,12psi
any info would be great

 

could be ur o2 sensor

43 is fuel system but sometimes its the o2

 

cheers i'll try that!

 

My freind is getting this on his 94 B16a swap. we're using a P28 for itand Uberdata, his book says fuel supply. I think it's his fuel pump.

I think it's not enough fuel, he is hitting at best 16.9's on his 170hp b16 with headers, 2 1/4 exhuast, and a short ram, should be mid 15's at least!

 

well i think ive sorted it, i incresed the fuel presure a bit and lowered the safc, and so far no cel,
i thought about my fuel pump but its a new walbro
ill keep ya informed