have a b18b1 in a 91 ef with a check throwing a code 43 not sure wat to start checking if any help il appreciated it thanks

 

Pleease answer his question lol im in need of help too... One question to you my friend. Do you have a power loss?

 

o2 sensor going bad will usually cause this code to show up. or fuel pump.

 

I have this same problem. I still have not fixed it since it only happens to me when I am driving freeway speed for awhile and if I shut the car off and turn it back on the cel goes away. I do have a power loss though. Anyhow, this is what was posted on my thread. Hopes this helps.

 

bad gas cap can cause this code

 

Idk bout him but that chart didnt help. My first answer was yes and theres nopage 11-89

 

no power loss and its running perfect ima change my gas cap it seems kinda old n stuff so wel see if any other suggestions would be great ooh and im running this b18b1 with a pr4 obd0 if that makes a difference the engine is a 98

 

ttt

 

ttt

 

SoB *** did you check your fuel pressure? Have you changed your fuel filter?

 

Nope i changed my gas cap witch both where holding pressure.. Are these my next step?

 

fuel pressure and check regulator. when i got this code it was cuz vacuum line on top of regulator was not hooked up to manifold, so check that too

 

^ Where is this hose your talkn about? I changed the fuel filter and nothin changed.

 

The EXACT same thing is happening to me; the light (code 43) only comes on if I hold a consistent speed for a while. I'm also experiencing power loss and bogging/surging at low rpms. Is it likely my o2 sensor or something else?

 

Im haven the sxact same problem as this guy right here!!! Please help someone lol.

 

the one that runs from top of fuel pressure reg to intake mani

 

Dude i hate to ask but would it be too much to take a few pics? This problem is really pissn me off.

 

Never been a fan of this code. Could be a LOT of things, I've had a bad dizzy, and leaky injector render this code. If there are no noticeable side effects, check for a leaky injector.

 

^^ While puttin my injector wires back on i noticd that if i push down on my injector 3 & 4 fuel squirts out.. The code first popped up after i sucked up water in my intake... Could compressing the water have caused this?

 

yea ill take pic on my b16 manifold

 

Ight thanks! Yeah i changed the fuel filter and im not gonna lie it ran a lil better but still had the same problem...

 

Would a clogged cat cause this code too?

 

I hope not i had open headers for like a week and it still did it.

 

Could the ignighter in the dizzy cause this problem?

 

^ I'm curious about this as well because I feel as though my dizzy might be at fault as opposed to my o2 sensor. I think I've read elsewhere that dizzy problems can throw code 43.