Code 43 Problem

[RyanD]

no. the cel never came on. thats not bogging?

[reklipz]

I recently replaced my O2 sensor; I was getting intermittent CELs just as you are. Replacing the O2 sensor was the fix.

I'm just grasping at straws here now, but perhaps this will spark ideas with others.

Did you ever mess with the idle air bypass screw on your throttle body? It's possible the idle is just set low somehow, and one of the air valves was somehow compensating for it.

Next, when I unplug my EACV electrical connection, my idle drops as well. Is it possible this is bad? Did you ever try swapping or replacing or cleaning this? I should note that when I unplug this, I immediately get a CEL for it, so I doubt this is your issue unless the motor/valve is somehow seized (causing the ECU to not notice it's bad, but causing the low idle).

The videos are a great help, btw.

[RyanD]

I recently replaced my O2 sensor; I was getting intermittent CELs just as you are. Replacing the O2 sensor was the fix.

I'm just grasping at straws here now, but perhaps this will spark ideas with others.

Did you ever mess with the idle air bypass screw on your throttle body? It's possible the idle is just set low somehow, and one of the air valves was somehow compensating for it.

Next, when I unplug my EACV electrical connection, my idle drops as well. Is it possible this is bad? Did you ever try swapping or replacing or cleaning this? I should note that when I unplug this, I immediately get a CEL for it, so I doubt this is your issue unless the motor/valve is somehow seized (causing the ECU to not notice it's bad, but causing the low idle).

The videos are a great help, btw.

so your car was doing the same thing as the last vid on pg 3? i cant get it to throw a cel for the unless i un hook something and make it. last night i unhooked the vac line from the egr just to see if the cel would even still work. it gave me code 12 and code. so i still hope the o2 is the problem

[wildBill83]

Your car is in fuel delivery limp mode because of the code 43. There is a sensor bad somewhere. Unfortunately it is not fun/easy to decipher what sensor.

Did you mess the the FPR? If you removed it did you re-prime it correctly?

When was the last time the timing belt was serviced?

Hod did you reset the ECU? Has the ECU ever been wet?

[RyanD]

Your car is in fuel delivery limp mode because of the code 43. There is a sensor bad somewhere. Unfortunately it is not fun/easy to decipher what sensor.

Did you mess the the FPR? If you removed it did you re-prime it correctly?

When was the last time the timing belt was serviced?

Hod did you reset the ECU?

i reset the ecu the way it says on the cel code thread. unplug neg batt cable. unplug hazard fuse. reconnect a few min later and run the car for a few min. after i did all that it started doing what it is doing.

i think the fpr is bad. the mechanic i took it to to get it pressure tested said it was putting out 70 pounds versus the spec 40

T belt as about 80k left on it.

[wildBill83]

Can you do a test for me?

Use the fuel rail test port and bleed the pressure from the fuel rail. Disconnect the vacuum hose from the FPR. Place pressure gauge on fuel rail test port and turn the key to II position a few times to reprime the FPR to the correct pressure. Reattach vacuum hose to FPR. Reset ECU and then see if it does it still.

[RyanD]

Can you do a test for me?

Use the fuel rail test port and bleed the pressure from the fuel rail. Disconnect the vacuum hose from the FPR. Place pressure gauge on fuel rail test port and turn the key to II position a few times to reprime the FPR to the correct pressure. Reattach vacuum hose to FPR. Reset ECU and then see if it does it still.

I dont have a press gauge. Can i still reprime the fpr? Or will it still go to the same press as the first time?

[RyanD]

It only does what it does when the engine is at operating temp. Ie the thermo opening. And i will kinda cut in and out. Sometimes it revs norm. Sometimes it bogg. Thas why i think the fuel air mix is incorrect. Ie the o2 sensor

[wildBill83]

There are a few things wrong, O2 sensor may be one of them. Can you rent a pressure gauge or have a buddy at an auto store hook one up temporarily? Generally the engine will run like that when the CYP sensor is bad, but you're not throwing that code.

[RyanD]

There are a few things wrong, O2 sensor may be one of them. Can you rent a pressure gauge or have a buddy at an auto store hook one up temporarily? Generally the engine will run like that when the CYP sensor is bad, but you're not throwing that code.

i will deff do that. i just got off the phone with the local honda specialist and was describing my problem in great detail. he said it sounded like a lazy o2. im going to bring it there for them to check it out. you were right so far about the limp mode.

[RyanD]

I just got back from the honda specialist and they looked the car over and listened to my problems, pulled the codes and said it was the o2 that is causing all the problems. my order from rockauto shipped out today so its shitty gas mileage until it gets here. the car has stopped bogging because according to the mechanic the computer knows what is going on and it put a stop to it or something like that. also the fpr is normal. it is supposed to be 40 at idle and 70 at something else.

I would like to thank you all for helping me out in this massive thread and i hope someone will take heed all the stuff discussed here. If the o2 sensor does not fix the problem i will post back. Good Day

[wed3k]

shouldve listened to the 1st post.

[H311RA151N]

The good OEM FPR I sent you came off my 93LX when I did the H23IM swap. Jewelproject sold me the IM setup with the FPR thats on my car already on it. So thats my old one off my A1. I didnt have any problems using it so it should be good. It has the rubber O ring still in it. You might get a little new motor oil on your fingers and work it into the O ring with it out of the FPR. That should put a little life back in it.

Also that new fuel filter I sent you isnt the best. Its not super cheap buts its not a Wix or OEM either.

With the FPR, Fuel Filter & O2 sensor you should have the problem narrowed down pretty good but Im thinking the O2 sensor is the main problem.

Also make sure and send me some pics (or post some) with the clear bumper lights and new corner lights once you get them and get them in. It will be nice to see them put to good use!

[wildBill83]

The good OEM FPR I sent you came off my 93LX when I did the H23IM swap. Jewelproject sold me the IM setup with the FPR thats on my car already on it. So thats my old one off my A1. I didnt have any problems using it so it should be good. It has the rubber O ring still in it. You might get a little new motor oil on your fingers and work it into the O ring with it out of the FPR. That should put a little life back in it.

Also that new fuel filter I sent you isnt the best. Its not super cheap buts its not a Wix or OEM either.

With the FPR, Fuel Filter & O2 sensor you should have the problem narrowed down pretty good but Im thinking the O2 sensor is the main problem.

Also make sure and send me some pics (or post some) with the clear bumper lights and new corner lights once you get them and get them in. It will be nice to see them put to good use!

That's awesome of you to send him parts. +rep good man.

[RyanD]

shouldve listened to the 1st post.

i did. but there are other problems that the code 43 brought up. like my fpr. this one can go in the books as the guy with a code 43 that had a bad fpr AND a bad o2