0rex:
If you can get a new ECU to test your car with, I think that's better.

Etoo:


Hi, I just finished from the mechanic, its not an oil sludge. The electrician said since no engine light is showing, there is no need for the diagnostics. The black smoke still comes out on higher acceleration and the fuel is highly affected.

I dont know whether the injector can be the culprit. A mechanic was telling of 2 sensors near the injector that possible could be causing it. Is there any other possibility I could check pending when the check-engine light surfaces?

Etoo:


Hi, I just finished from the mechanic, its not an oil sludge. The electrician said since no engine light is showing, there is no need for the diagnostics . The black smoke still comes out on higher acceleration and the fuel is highly affected.

I dont know whether the injector can be the culprit. A mechanic was telling of 2 sensors near the injector that possible could be causing it. Is there any other possibility I could check pending when the check-engine light surfaces?

0rex:
I have seen ECUs do all sort of things to a car that's why I recommended trying with another ECU readily available not buying a new one. Take note, OP.

0rex:
I have seen ECUs do all sort of things to a car that's why I recommended trying with another ECU readily available not buying a new one. Take note, OP.

honmusa:
I have said it before ,what you have is likely a input issue.If you are feeding wrong input data into your engine controller computer definitely you will have an alter air/fuel stoic ratio which can be in form of black smoke or lean running engine.
If you lack the skillset to run a live stream on your powertrain ,use the procedure of elimination by removing all your sensors one by one and checking against the black smoke coming out of your exhaust until you find the culprit responsible for it.
Leave your ecu and injector alone ,concentrate on the sensors first .But if you insist on Kazeem system of throwing parts to to resolve issue ,I am readily available to supply you a many ecu as you want .

Etoo:

@Honmusa, pls can u name the sensors and the locations on the vehicle so that I will start off with the elimination method.
Thanks for ur concern

Etoo:

Pls how much is ECU for RX300?

Etoo:

@Honmusa, pls can u name the sensors and the locations on the vehicle so that I will start off with the elimination method.
Thanks for ur concern

honmusa:

Start with O2 sensor ,disconnect all the O2 sensors(upstream and downstream) from their connectors and check if you are still getting the black smoke from your tail pipe.
If you don't get the location ,call my number @ my signature.

Donclaracuzo:

What is the meaning of O2

Donclaracuzo:

Sorry, Oxygen sensor

honmusa:
I have said it before ,what you have is likely a input issue.If you are feeding wrong input data into your engine controller computer definitely you will have an alter air/fuel stoic ratio which can be in form of black smoke or lean running engine.
If you lack the skillset to run a live stream on your powertrain ,use the procedure of elimination by removing all your sensors one by one and checking against the black smoke coming out of your exhaust until you find the culprit responsible for it.
Leave your ecu and injector alone ,concentrate on the sensors first .But if you insist on Kazeem system of throwing parts to to resolve issue ,I am readily available to supply you a many ecu as you want .

Etoo:

@honmusa, my mechanic has started the elimination method today. He replaced the MAF sensor and advised that i drive the car till Saturday ( since i drive only from home to office and vice versa) for the smoke to clear.
As im waiting for that, I needed the gurus in the house to inform me whether the effect of d change is supposed to be immediate or gradual. Thanks

honmusa:

why are you complicating a simple procedure?
I said start from the O2 ,remove it (dont change it),run the engine and check if you still have a black exhaust smoke. It an immediate thing !!!!

Etoo:

@honmusa, my mechanic has started the elimination method today. He replaced the MAF sensor and advised that i drive the car till Saturday ( since i drive only from home to office and vice versa) for the smoke to clear.
As im waiting for that, I needed the gurus in the house to inform me whether the effect of d change is supposed to be immediate or gradual. Thanks

Mullberry:
Do you mean he should disconnect the socket or completely remove the sensor?

Mullberry:
what is your observation so far? Thick black smoke or getting a little faint?

honmusa:

REMOVE THE SENSOR!!!!

Etoo:

Its getting fainter. I pray this solves the issue.

Etoo:


Hi, I just finished from the mechanic, its not an oil sludge. The electrician said since no engine light is showing, there is no need for the diagnostics. The black smoke still comes out on higher acceleration and the fuel is highly affected.

I dont know whether the injector can be the culprit. A mechanic was telling of 2 sensors near the injector that possible could be causing it. Is there any other possibility I could check pending when the check-engine light surfaces?

Etoo:

@honmusa, my mechanic has started the elimination method today. He replaced the MAF sensor and advised that i drive the car till Saturday ( since i drive only from home to office and vice versa) for the smoke to clear.
As im waiting for that, I needed the gurus in the house to inform me whether the effect of d change is supposed to be immediate or gradual. Thanks

honmusa:

REMOVE THE SENSOR!!!!

Etoo:

Thanks Honmusa. At the moment, I'm monitoring the performance of the car. The black smoke is reducing. If its not clear before Saturday, I will remove the sensor as u advised. I have also learnt how to disconnect the O2 sensor. Thanks man for all ur advice so far.

erico2k2:

Bro are you orite ??
if he removes the O2 sensor there will be a hole in the exhust and it will blow,are U for real?
Now I see why GAZZUZZ unfollowed this thread

Etoo:

Thanks Honmusa. At the moment, I'm monitoring the performance of the car. The black smoke is reducing. If its not clear before Saturday, I will remove the sensor as u advised. I have also learnt how to disconnect the O2 sensor. Thanks man for all ur advice so far.