My car is a 2004 toyota corolla American spec with 164,000 miles. I started having an oil shortage issue and low compression so I bought a complete tokumbo engine (japan) and replaced on the vehicle. Since then I've been having an unsteady idle and loss of power (like an electrical current is short). I scanned and got code: P0032. Trial-and-error auto repairers here have done the following to no avail: Changed air flow meter, Changed air filter, Serviced injector nozzles, Changed fuel pump, Cleaned throttle body, Serviced idle control valve, Checked for vaccum leaks, Removed my cat.converter, Changed a suspected bad coil, Changed upstream 02 sensor twice. Infact I'm tired. I even bought an OBDII scanner myself. (Mods. Help me kick to frontpage abeg)

I suggest you try to replace your brain box.

Dont go and buy new one, first of all explain to the dealer what your problem is and let him know that if you replace and it works then you will pay otherewise you put back your own brain box. I dont know your location otherwise I know of a guy in KD who worked on my 2004 corrola in 2016.

You dont buy brain box and fix like any other part of the vehicle. It requires some configuration after replacement and if it is done done by someone who is not good at it the problem will not be solved.

By your explanations you have done and changed all necesaary things that that are related to that problem. The unfortunate thing is that no scanning tells you that your cu (brain box) requires replacement. Rather some of those code like you mentioned will be on display.

I suggest you try to replace your brain box.

Dont go and buy new one, first of all explain to the dealer what your problem is and let him know that if you replace and it works then you will pay otherewise you put back your own brain box. I dont know your location otherwise I know of a guy in KD who worked on my 2004 corrola in 2016.

You dont buy brain box and fix like any other part of the vehicle. It requires some configuration after replacement and if it is done done by someone who is not good at it the problem will not be solved.

By your explanations you have done and changed all necesaary things that that are related to that problem. The unfortunate thing is that no scanning tells you that your cu (brain box) requires replacement. Rather some of those codes like you mentioned will be on display.

Another additional thing you may try is replacement of your injector mouth. It is based on my experience with that model of Corrola. Brain box, coil and injector mouth where responsible for the trouble I went through in 2016 as I got to discovered later and till date I have not recovered from that trouble. Though I was able to solve all the associate problem before selling the car. Sold it off and bought "big for nothing" infact the problem made hate any thing corrola.

Proudly team Mercedes. EPC gives you all these....no trial and errors.

Change your brain box. I experienced it when my car was vandalis. We tried several brain box until we got the one that gave the required compression.

degamonn:
I suggest you try to replace your brain box.

Dont go and buy new one, first of all explain to the dealer what your problem is and let him know that if you replace and it works then you will pay otherewise you put back your own brain box. I dont know your location otherwise I know of a guy in KD who worked on my 2004 corrola in 2016.

You dont buy brain box and fix like any other part of the vehicle. It requires some configuration after replacement and if it is done done by someone who is not good at it the problem will not be solved.

By your explanations you have done and changed all necesaary things that that are related to that problem. The unfortunate thing is that no scanning tells you that your cu (brain box) requires replacement. Rather some of those code like you mentioned will be on display.

In my case, I have to convince them that my car was running smoothly until it was vandalis. I insist that we get the correct brain box after testing several brain box we later got the perfect match that gives the required compression

If you are in Lagos. Come in for a free diagnosis

mayor2013:
If you are in Lagos. Come in for a free diagnosis

I'm in Enugu. Thanks for the offer though'

pafra:
Change your brain box. I experienced it when my car was vandalis. We tried several brain box until we got the one that gave the required compression.

pafra:



In my case, I have to convince them that my car was running smoothly until it was vandalis. I insist that we get the correct brain box after testing several brain box we later got the perfect match that gives the required compression

Brainbox dey give compression? Everyday I keep learning on car talk

Diportivo come & learn too oh

Pay for diagnosis at the dealer or good modern shop. I think you'll agree it's cheaper than an engine or brain box.

thebigkendo:




Brainbox dey give compression? Everyday I keep learning on car talk

Diportivo come & learn too oh

ol' boy

as the op also wants the topic to be moved to fp,the replies are getting massive already

let me carry biro and paper

where r my goons?

thebigkendo:




Brainbox dey give compression? Everyday I keep learning on car talk

Diportivo come & learn too oh

I think you were in a hurry and did not really read to comprehend the content of that post. According to the OP " after replacing the the engine,..." read from there. My suggestion is based on my experience anyway. It is better you offer him advice on what to solve the problem.

degamonn:


I think you were in a hurry and did not really read to comprehend the content of that post. According to the OP " after replacing the the engine,..." read from there. My suggestion is based on my experience anyway. It is better you offer him advice on what to solve the problem.

Bros I am not doubting your experience.. Just learnt something new from you today ni oh.. Before I use to think only engine has compression ratio but now you have taught me.. Brain box also has compression

thebigkendo:


Bros I am not doubting your experience.. Just learnt something new from you today ni oh.. Before I use to think only engine has compression ratio but now you have taught me.. Brain box also has compression

Yes only engine has it but it's brainbox that communicate between engine compression and air and fuel mixture... in OP case his brain box might not be communicating well with the engine

homeboy205:



Yes only engine has it but it's brainbox that communicate between engine compression and air and fuel mixture... in OP case his brain box might not be communicating well with the engine compression

Interesting
www.nairaland.com/attachments/8018613_img20180720222843_jpegde3f8342f2a0ede6b5b1b6b925daa4b5

Diportivo are you taking notes?

COSIBI:
My car is a 2004 toyota corolla American spec with 164,000 miles. I started having an oil shortage issue and low compression so I bought a complete tokunbo engine (japan) and replaced on the vehicle. Since then I've been having an unsteady idle and loss of power (like an electrical current is short). I scanned and got code: P0032. Trial-and-error auto repairers here have done the following to no avail: Changed air flow meter, Changed air filter, Serviced injector nozzles, Changed fuel pump, Cleaned throttle body, Serviced idle control valve, Checked for vaccum leaks, Removed my cat.converter, Changed a suspected bad coil, Changed upstream 02 sensor twice. Infact I'm tired. I even bought an OBDII scanner myself. (Mods. Help me kick to frontpage abeg)

What do you mean by low compression in the old engine? Explain the symptoms

Are you sure you bought the correct engine, Your american spec engine should be 1ZZ-FE, Japan has 3 different engines, so which japan engine did you buy? 1NZ-FE, 1ZZ-FE or 2ZZ-GE? or even 3ZZ-FE

thebigkendo:


What do you mean by low compression in the old engine? Explain the symptoms

Are you sure you bought the correct engine, Your american spec engine should be 1ZZ-FE, Japan has 3 different engines, so which japan engine did you buy? 1NZ-FE, 1ZZ-FE or 2ZZ-GE? or even 3ZZ-FE

With the old engine, i was topping oil every week. That's basically why i decided to replace it. I bought 1zz-fe of Japan origin (note: the old one is canada VIN)

COSIBI:

With the old engine, i was topping oil every week. That's basically why i decided to replace it. I bought 1zz-fe of Japan origin (note: the old one is canada VIN)

You should have just rebuild the old engine and continue.. It was The oil ring and compression that worn out on the old engine...

Where is the old engine?

COSIBI:

With the old engine, i was topping oil every week. That's basically why i decided to replace it. I bought 1zz-fe of Japan origin (note: the old one is canada VIN)

You mentioned low compression, aside the oil burn, no other symptom??

homeboy205:


You should have just rebuild the old engine and continue.. It was The oil ring and compression that worn out on the old engine...

Where is the old engine?

what wears out compression in an engine sir?

thebigkendo:


You mentioned low compression, aside the oil burn, no other symptom??

By low compression, I mean it wasn't really springing out like it used to, especially on a hilly road,, else movement was not as bouncy as i have it now

was it smoking?

COSIBI:

By low compression, I mean it wasn't really springing out like it used to, especially on a hilly road,, else movement was not as bouncy as i have it now

weyreypey:
was it smoking?

Yes. Black smoke. Can anyone come up with a solution to the present issue since the old engine is gone already

black smoke is not oil burn....that definitely was fuel issues...

COSIBI:

Yes. Black smoke. Can anyone come up with a solution to the present issue since the old engine is gone already

COSIBI:

Yes. Black smoke. Can anyone come up with a solution to the present issue since the old engine is gone already

oga go and look for your old engine and work on it. The new engine isnt communicating properly with your ecu. You'll keep throwing parts and probably another ecu on this new engine

thebigkendo:


Interesting
www.nairaland.com/attachments/8018613_img20180720222843_jpegde3f8342f2a0ede6b5b1b6b925daa4b5

Diportivo are you taking notes?

You play too much.

You know what he means, though.

COSIBI:
I'm in Enugu. Thanks for the offer though'

OPUSDEI1 is at Nnewi.

I had a similar issue on my eod 2003 four cylinder I bought a used engine from onitsha mounted it and most times climbing a hill the car will not respond it will be doing like something that is sucking air I have changed virtual all d changeable from what my scanner told me even bought more than 4 different fuel pump still d same though I travel with d car to everywhere but once in d first gear on a hill it just don't move as supposed maybe I should try the brain box since d scanner can't detect it

osinawanta:
I had a similar issue on my eod 2003 four cylinder I bought a used engine from onitsha mounted it and most times climbing a hill the car will not respond it will be doing like something that is sucking air I have changed virtual all d changeable from what my scanner told me even bought more than 4 different fuel pump still d same though I travel with d car to everywhere but once in d first gear on a hill it just don't move as supposed maybe I should try the brain box since d scanner can't detect it

The scanner dectected it like Toyota now if you have a p0300 which means random misfire or p0301 which means cylinder one is misfire.. let assume you change all the necessary things, bad coil pack in that cylinder one, fuel injector in cylinder one,bad spark plug... and the same cylinder still misfire that means the brainbox is not communicating it's a sign people don't check because they believe brainbox don't need changing

Even any reoccurring sensor failing after changing might be ECU.. Ecu is always written as the last possible cause of any illuminated check engine light

homeboy205:



The scanner dectected it like Toyota now if you have a p0300 which means random misfire or p0301 which means cylinder one is misfire.. let assume you change all the necessary things, bad coil pack in that cylinder one, fuel injector in cylinder one,bad spark plug... and the same cylinder still misfire that means the brainbox is not communicating it's a sign people don't check because they believe brainbox don't need changing
Even any reoccurring sensor failing after changing might be ECU.. Ecu is always written as the last possible cause of any illuminated check engine light

Baba oohhhhh.. Expert Rewire

HeavenlyBang:


You play too much.

You know what he means, though.



OPUSDEI1 is at Nnewi.

I am not playing oh.. Baba keeps dropping lessons

homeboy205:


You should have just rebuild the old engine and continue.. It was The oil ring and compression that worn out on the old engine...

Where is the old engine?

swoon

and the learning continues