₦airaland Forum

tensazangetsu20:
Abeg o . I am also here to learn like everyone else. I did marine engineering but I started to get into cars in my final year in the university. I read some basic books like auto repair for dummies and how automobile engines work. I also subscribed to a lot of YouTube car channels chrisfix and Ericthecarguy are my top favourites. I wanted to work with cars when I got back to Nigeria. Applied to a lot of big auto workshops here to work for free and got nothing. Fortunately, my mom drives a problematic car so I downloaded her car manual online and went from changing oil to opening up the cylinder head all with the instructions from the manual. I have out her car up to spec with just the manual instructions. For what we learnt, we just started with basic circuitry stuff like signs and what they mean, we had a workshop practice for the course where we worked with circuits connected to a computer. Once we got the basics, we moved on to calculations.

tensazangetsu20:
I schooled in Ghana and I was taught how to read wiring diagrams in my first year. Applied electricity and circuit theory. I applied this knowledge extensively when I did my internships. Wiring diagrams for cars are the easiest among all machineries. It's way more complex with ships.

obekediamondfuto:
engine oil is leaking somewhere

Gazuzz whatcha say? continue with the switch?

cc autoelectng

austin4real:
Hi gazzuzz, recently got a 9ja used 2007 Honda Accord, upon servicing I used the 5w-20 synthetic oil for the first servicing when I got hold of the vehicle however like 2 and a half or 3 months later I checked the dipstick only to find out that the vehicle had almost finished consuming the oil... had to switch to the 20w-50 brand of oil immediately, now I’m approaching the time for next servicing and I’m afraid of using the recommended variant, what could be the problem... Note that engine is not smoking or giving any signs of oil consumption..

1stNumeroUno:
Dear AutoElectng, is there possibility of you breaking the whole programme into modules E.g I might be interested only in HVAC or Suspension & Steering, cause of cost in short.

Inception:
Question sir:

The final gear ratio of the car as originally designed was 3.367
Doing the swap means the final ratio will then be changed to 3.648
This means the new ratio to the old ratio is now 1.083:1.000

I understand the benefits of this : increased Torque and acceleration at low speed, but my top speed will definitely reduce @ all gears (and i care less about that)

My worry is if the output speed sensor will get better readings than before. With the gear presently on the car, the final drive ratio is 2.885, which when compared to the designed is about 0.857 :1.000. This i believe was causing the shift flares shifting from 2 to higher gears.How the TCU did not register a gear incorrect ratio is a mystery.

Do you think the proposed ratio highlighted will eliminate the shift flare?

TRYGO:
We announce to you, the creation of a thread tailored towards getting unfettered and unbiased support/answer to your various automotive inquiries.

This thread will allow you to asks various automotive questions. We will be theoretical as much as we can, to enhance your understanding through knowledge of basic principles.

We will try to make explanations as analytical and scientific as possible rather than feed you with only myths, as well as use our practical experience to assist you. 

It promises to be very interactive, not just for problem solving but for learning. Enthusiasts, students and amateurs will find here an environment to stay.


On this thread, solution providers will be limited to just 2 people, though we will welcome positive contributions from other experts. This is to ensure that this place is organized and not to end up confusing the person that is seeking support. 

Wherever we can not be of help, we will refer you to other experts in the field. 


This thread is not to promote our services but basically to assist and enhance positive knowledge and experience of everyone here. 


We encourage and emphasize courtesy and regard for others on this thread so that people looking for help will not end up being insulted or embarrassed.

Only productive arguments would be welcomed.


Also watch out for other threads that we will create outside this one but with "Automobile help desk" signature. 


Our faculties will be:

1. Joseph — 08066643532

2. Richard — 08030420562 


Feel free to relate with any of us. 


To key us in, we will be feeding you with articles and case studies in no distant time.

We will keep doing this to keep this thread active. 


Best regards,

Automobile Help Desk.

Inception:
Good questions...
1)
Transmission was replaced 3 times after purchase from previous owner(valvebodies was also interchanged. ) with transmissions from US spec Hyundai sonata and kia optima 2.4 GDI ( i knew this from the vin stamped on the gearbox bodies). It was the same story ( transmission flares 2-3 , 3-4 not too bad, 4-5 bad, 5-6 not bad) but with no jerking. Only 1-2 engaged normally. This caused the initial conclusion that TCM might have gone bad.

Remember that the car was bought from previous owner with 2013 Hyundai Santa-fe gearbox(2.4L GDI 2WD) installed as it had suffered gearbox failure from previous owner( forward gear refused to engage according to him). Prior to replacement of gear by new owner, transmission adaptation was reset. the reset caused smooth gear shift with no flares for a bout 20-30 km, then harsh engagement set in (particularly from 2-3)

Vehicle is a Nigerian specification vehicle, transmissions are US specifications

2.
Like as earlier said the first gear installed was from a 2013 Hyundai Santafe 2WD. Gear ratios were all diffrent (1: 4.639,2:2.826, 3: 1.841,4: 1.386, 5:1.000, 6: 0.772, Final drive= 3.648) . The Kia Optima/Hyundai Sonata ratios are(1:4.212,2: 2.637,3: 1.800, 4:1.386, 5:1.000, 6: 0.772, Final drive( US spec)=2.885, Dana spec 2.0 MPI= 3.367)

Vehicle will never shift the same Unless maybe you go the invasive surgical route, replace the ECU with Nigerian US specification and all the attendant problems/costs that would come with it.

3.
Right now i have 3 transmissions... 1 from Hyundai santa fe, 1 from us spec hyundai sonata, 1 from kia optima us spec( currently installed on vehicle). I was able to rebuild the Hyundai sonata from the Santa fe by only exchanging clutch packs. This i have tested on the vehicle and it worked (with the same flaring issue of course). There i realized all the similarities and differences.. So now what i intend to do is to swap the final drive and differentials on the Hyundai sonata and install on the vehicle to check compatibility

Let us know how it goes.

So you are in this trade...as a business or hobby doesn't matter, but I have always had this feeling that are one of us.

The mechanic was simply my 10 -11 spanner

Inception:
Na wa for Hyundai Kia sef...

After exhaustive investigations and research, i realized that even the transmission replaced is not compatible! The TCU was never at fault.

The Transmission installed was from a KIA optima 2012 US spec vehicle. All drive ratios with the originally designed transmission is the same( gears 1 to 6) but the final drive ratio is different (2.885 for US spec{2.4 GDI engine with 200HP output} ) as against 3.367 for the 'General' spec{2.0 Theta II MPI engine with 162 Hp output}). The general spec is the Nigerian export which Kia motors Nigeria sells .

The implication to this is that the output speed sensor takes readings from the gear teeth from the final drive. Now this already gives a ratio of 2.885/3.367= 0.856 which causes a transmission flare particularly for gear shift 2-3 and 4-5 (as this involves the engagement of clutches instead of brakes) .

Now to my gurus: i am in a dilemma. i have a 2013 Hyundai Santa-Fe gear which i dismantled and removed some elements (clutch disks) for future use in case of clutch pack failure( long story for another day) . upon checking i realized that the final drive of this is 3.648 { 2.4 GDI 2WD}. i have confirmed that it will work if i swap the differentials, the final gear and the output speed sensor into the current gear( i don open that one too but no pics you hear ) This will give me a ratio of 1.083.
What do you think?

N.B. This is purely from an engineering stand point and yeah yeah i know i will need to buy another gear but i want to be like kashif first and use my leave to have some fun