Im throwing a code 43 fuel system supply...

Ive got an obd1 jdm d15b vtec in a '89 crx

Can anyone tell me why?

Maybe injectors, fuel pump, fuel pressure reg, etc...

 

c'mon this is honda-tech...

normally i'll have 20 replies by now

 

Maybe you should check those first.

 

ok any idea as to how i go about checking the injectors? i know i can have them cleaned at west bay but for how much? and who knows if thats the problem...

how would i check the fuel pump?

 

wow...

2 days on here and ive only got 1 post!

whats happening to honda-tech?

 

The factory service manual says this is either the O2 sensor or the fuel system. If the car is also running poorly, then per the manual the best guess is it is the fuel system. See http://media.honda.co.uk/car/owner/m.../pdf/11-74.pdf and go to the pages cited at the main site for the Civic.

Otherwise, try putting in a new OEM oxygen sensor.

 

i got the same swap and same problem on my 89 crx hf i just change the oxygen sensor and is fix

 

i bought a brand new denso o2 sensor off ebay and it was for a gm and when i contacted the guy about it he said that it was the same as a honda 4 wire...

so i matched the wires up accordingly to the diagram. drove the car for a couple days before it started throwing this code

 

Sounds suspicious. Look up the correct Denso O2 sensor at www.densoproducts.com and see if the one you put in matches. Densoproducts.com and amazon.com tend to have the best prices for OEM-make oxygen sensors, BTW. Unfortunately since you have swapping going on, this is probably the last help I can offer. I searched honda-tech.com and "Code 43" sure comes up a lot, with much advice and an occasional solution offered. Good luck.

 

i just stated throwin code 43 yesterday tracked it down to the cluster havin a burnt trace line the bronze or gold lines on the back of the cluster check that and see if it works i just jumped mines wit some wire and super glue hahah ghetto. i also heard u can use that stuff they sell at autozone to fix the defrost on the window