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SKIPS · Mar 27, 2010, 06:21 AM

Hello, I can't believe how many electrical problems hondas have.Can anyone help? My daughters car is driving me crazy, Ive replaced the main relay twice, the control modual twice, a heat senser, the coil, pulled the exhaust and checked the converter and I am still having problems.The latest being that it shuts down the fuel enough to slow the car to an idle. If you press the excellerator down it backfires through the filter. If you let it up it just ides and the its fine .It will accelerate like nothing was ever wrong. I'm getting a code 43 . I have read hundreds of questions where people were having the same problem but not one answered back with what it took to fix the problem. Please help if you can.

cdad · Mar 27, 2010, 07:00 AM

Have you checked the fuel pump pressure and the static timing on the engine?

Ref:

http://www.hondacarforum.com/honda-3...diagnosis.html

SKIPS · Mar 27, 2010, 07:27 AM

99 % of the time the car runs perfit. Its only occasonally that this happens. Sometimes its at 15 miles per hour and other times its at 55 miles per hour, and it corrects itsself almost instantly. If it was fuel pressure it would do it all the time. I think its something electrical that's shutting down the fuel?timing should be fine as it starts great and doesn't miss even at 65 mph.

TxGreaseMonkey · Mar 27, 2010, 09:34 AM

Possibilities:

. Replace the heated oxygen sensor.

. Replace the fuel injectors.

SKIPS · Mar 28, 2010, 06:51 PM

Why would the oxygen sensor shut off the fuel momentarily ?

TxGreaseMonkey · Mar 28, 2010, 07:00 PM

Code 43 indicates there's a problem with the heated oxygen sensor circuit or a problem with the fuel supply system (fuel injectors, fuel pump, main relay, or fuel regulator).

Are you certain the distributor, including the igniter and coil, are good? Have you checked the timing with a timing light?

cdad · Mar 28, 2010, 07:14 PM

From all the code read outs I have seen nothing has mentioned an oxygen sensor. And it wouldn't shut down the fuel it would only caus it to run rich or lean depending on the reading. The only other code should be for if it heats up too slow.

TxGreaseMonkey · Mar 28, 2010, 07:26 PM

Originally Posted by ;

From all the code read outs I have seen nothing has mentioned an oxygen sensor.

Califdadof3, you need to consult the Honda Shop Manual for what it says about a Code 43--it's right there.

cdad · Mar 28, 2010, 07:43 PM

Originally Posted by TxGreaseMonkey

califdadof3, you need to consult the Honda Shop Manual for what it says about a Code 43--it's right there.

Is there one online that you can point to because none of the ones I had seen mention it.

TxGreaseMonkey · Mar 28, 2010, 07:46 PM

I consulted an actual Honda Service Manual that I have in my library.

cdad · Mar 28, 2010, 07:51 PM

I did find this but from what they are saying the O2 is a separate part of the code.

code 43:Fuel supply system?? - Honda-Tech

TxGreaseMonkey · Mar 28, 2010, 07:59 PM

I found this on line:

Honda Repair: 92 Honda Accord 2.2 error code 43, fuel supply system, sensor circuit

Note his answer:

Answer
Code 43 is a fuel supply or o2 sensor circuit malfunction. Only thing I have ever seen with this code is a bad o2 sensor. It will cause a poor running condition usually until the light comes on and then the computer removes the o2 sensor readings from its equations and runs off a set parameter list. Not very efficient. Replace the O2 sensor and see what happens. Make sure to erase the code when you replace the o2 sensor.

TxGreaseMonkey · Mar 28, 2010, 08:06 PM

To me, a bad heated oxygen sensor makes perfect sense to explain Skips title, "91 honda accord, bogs." A bad oxygen sensor could also contribute to the car backfiring. Here's how to replace the sensor, should you decide to go this route:

https://www.askmehelpdesk.com/cars-t...tml#post223376

TxGreaseMonkey · Mar 31, 2010, 01:07 PM

This is an important thread, which will help members better understand the symptoms of a failing oxygen sensor. Note, particularly, how the ECM's algorithm (programmed parameters) kicked in and affected engine performance. Excellent teaching thread.