Parts needed for Nissan Sunny 1989 after Engine Swap

[FBB]

for any electronic fuel injection system whether tbi mpfi sequential mpfi etc...vss input is necessary coz it tells ecu in coordination with tps and map or maf to cut off fuel when coasting or when foot from accelerator is put off....otherwise error will be stored in ecu and car will run in limp mode i.e on learned values.....if fuel cut off is eleminated from efi then it will be working more or less like a carby engine....in nissan 3 row ecu the check light often does not appear on missing vss however it appears in malfunction of vss in some models...however as soon as u start driving it....it starts on pre stored values....so in short if u connect vss there wud be slight gain of economy.

Thats what I am trying to tell ... Simple input and output is not possible.

Sent from my Z12 using Tapatalk

[FBB]

^^^
Pin 8 is for tachometer (RPM meter)

The lights you are referring to in above post are instrument cluster lights, not the sensor lights (There doesn't exist any such thing in the world, lol)

This meter won't be able to interact with ECU for VSS thing.

Mine is giving good economy and power without VSS. It sure isn't a perfect setup, but a good working one...!!! With wire driven setup, your speedo should work fine through speedo cable. Don't know about how to make RPM meter working. I think there should be another cable for that from gearbox???

RPM works on electronic pulse, in GA engine it gets signal from Distributor whereas in QG engine the RPM is with ECU.

Sent from my Z12 using Tapatalk

[dani_kk]

for any electronic fuel injection system whether tbi mpfi sequential mpfi etc...vss input is necessary coz it tells ecu in coordination with tps and map or maf to cut off fuel when coasting or when foot from accelerator is put off....otherwise error will be stored in ecu and car will run in limp mode i.e on learned values.....if fuel cut off is eleminated from efi then it will be working more or less like a carby engine....in nissan 3 row ecu the check light often does not appear on missing vss however it appears in malfunction of vss in some models...however as soon as u start driving it....it starts on pre stored values....so in short if u connect vss there wud be slight gain of economy.

First of all you're being to general.
Vss plays a role in speed limiter. But not in every car. The ignition and injection maps are made with coordination of tp and maf values along with vss signal. But not every car works like that. Fuel cut is something else it works on crank and cam shafts signal that is in other words rpm and at desired rpm the injector duty cycle becomes 0%.
I have been doing tuning in my QG engine bro so have played with every sensor values and i know the role of it. But you are being very general that vss is this or vss is that. In QG15de it doesn't have anything to do with fuel injection map, nothing at all.

[FBB]

First of all you're being to general.
Vss plays a role in speed limiter. But not in every car. The ignition and injection maps are made with coordination of tp and maf values along with vss signal. But not every car works like that. Fuel cut is something else it works on crank and cam shafts signal that is in other words rpm and at desired rpm the injector duty cycle becomes 0%.
I have been doing tuning in my QG engine bro so have played with every sensor values and i know the role of it. But you are being very general that vss is this or vss is that. In QG15de it doesn't have anything to do with fuel injection map, nothing at all.

@mirza967 aap jitna bhi karlo lekin @dani_kk will never accept others experience and keep standing on murgi ki ek tang...
Yar dani mana k you have good experience but accept others input too or else people will not admire you for your posts or struggle.
I know tum is pe bhi lecture do ge ... Keep it going.

Sent from my Z12 using Tapatalk

[dani_kk]

@mirza967 aap jitna bhi karlo lekin @dani_kk will never accept others experience and keep standing on murgi ki ek tang...
Yar dani mana k you have good experience but accept others input too or else people will not admire you for your posts or struggle.
I know tum is pe bhi lecture do ge ... Keep it going.

Sent from my Z12 using Tapatalk

It's a public discussion forum bro. Mislead ni karna chaye kisi ko. Khud har cheez practically implement karkay dekhi hou, after that we can be so sure about something.
Vss buhat bari balaa hai in ethrottle QG i admit it.
But not in normal one its not.
So jab ek cheez hai hi nai possible tou how can i say kat ap theek kehrahay hain?

[star2]

@dani_kk

please update my knowledge as well, why there is a VSS out in Speedometer of Nissan cars coming with wire-driven QG18DE to be specific, Nissan AD and Wingroad, and some models of Sentra.

also, please update me, that in the above mentioned models, the wiring diagrams indicate that VSS input from sensor is going to meter and meter is sending signal to ECU, why is that?

please also let me know that if VSS is not connected, is there a way for ECU to know the vehicle speed?

[FBB]

@dani_kk

please update my knowledge as well, why there is a VSS out in Speedometer of Nissan cars coming with wire-driven QG18DE to be specific, Nissan AD and Wingroad, and some models of Sentra.

also, please update me, that in the above mentioned models, the wiring diagrams indicate that VSS input from sensor is going to meter and meter is sending signal to ECU, why is that?

please also let me know that if VSS is not connected, is there a way for ECU to know the vehicle speed?

He says VSS is only required in Electronic Throttle wala engine, baqi sab engine mein VSS ghalti se aa gai hai

Sent from my Z12 using Tapatalk

[dani_kk]

He says VSS is only required in Electronic Throttle wala engine, baqi sab engine mein VSS ghalti se aa gai hai

Sent from my Z12 using Tapatalk

Qamarahmad.awan I'm not saying this, kay ghalti se laga dea hai. My point is in altered, swapped cars like putting a QG15de in some other old chasis eg b11, b12 or b13.
So what my point says is
Vss ka ecu se connection hona in this case is not like this kay hadees mein likha gaya hai.
Apnay debate shuru ki injection ya fuel management se related. Mein uspe apsay debate karha hun hona chaye ya nai hona chaye be debate nai horahi.

So i am just telling you i have implemented both ways in QG15de and QG18de wire driven versions and three row ecu walay. Vss kay through ya vss kay bagher na toh fuel average pe koi fark para, na hi engine ne chalnay se inkaar kiya kay vss nai lagaogay toh nai chalounga.

So abhi bhi kehraha hun fuel management ka koi taluq nai hai in do engines pe jinka quote kiya hai.

Is tarah toh apnay, apnay QG18de mein
Refrigent pressure sensor, evap system, vent control valve yeh sab nai lagwaya hua toh ispe yeh nai kaha jaskta kay these sensors are waste of time. They definitely have some purpose.

We are talking about, do we require them on QG15de wire driven, three row ecu version.

That's my point.
I'm not encouraging anyone kay bhai ap vss lagao hi na.
I'm just saying even if you don't use it, fuel average pe koi fark nai parega.

[dani_kk]

@dani_kk

please update my knowledge as well, why there is a VSS out in Speedometer of Nissan cars coming with wire-driven QG18DE to be specific, Nissan AD and Wingroad, and some models of Sentra.

also, please update me, that in the above mentioned models, the wiring diagrams indicate that VSS input from sensor is going to meter and meter is sending signal to ECU, why is that?

please also let me know that if VSS is not connected, is there a way for ECU to know the vehicle speed?

@star2 bro circuit diagram I'm talking about the circuit board not wiring diagram and vss input is processing a vss signal from an ic and sending it to dashboard wiring. And that ic has no connection with injectors ic or injection timing circuit. And whereas tp pin, maf pin, coolant sensor pin, cam, crank and coils all are interconnected in that electronics.

[dani_kk]

Is tarah toh Aplog up model engines daal rahay hain garion mein toh phir gari hi 2010 ki le lein. Abh b12 ya b13 2008-9 nai bansakti na.

[star2]

@star2 bro circuit diagram I'm talking about the circuit board not wiring diagram and vss input is processing a vss signal from an ic and sending it to dashboard wiring. And that ic has no connection with injectors ic or injection timing circuit. And whereas tp pin, maf pin, coolant sensor pin, cam, crank and coils all are interconnected in that electronics.

yeah i know that, i noticed that circuit as well brother. you did not answer my questions though :).

[star2]

Is tarah toh Aplog up model engines daal rahay hain garion mein toh phir gari hi 2010 ki le lein. Abh b12 ya b13 2008-9 nai bansakti na.

gari pasand ho, aur paisey hoon, to its a cheap/cost effective solution to buy the most up-to-date version of a car. but maintaining a classic that too with proper parts and logic is a charm not everybody cherish and it takes a lot more to maintain that car. come, be my guest and drive around my B13 with QG18. you will get to know what I am talking about. I have 3 different suspensions of my car for different purposes. I do not know how many car owners have that kind of enthusiasm

[dani_kk]

gari pasand ho, aur paisey hoon, to its a cheap/cost effective solution to buy the most up-to-date version of a car. but maintaining a classic that too with proper parts and logic is a charm not everybody cherish and it takes a lot more to maintain that car. come, be my guest and drive around my B13 with QG18. you will get to know what I am talking about. I have 3 different suspensions of my car for different purposes. I do not know how many car owners have that kind of enthusiasm

No doubt about that. It's about enthusiasm.
No one installs a emanage ultimate in a QG engine they say are u crazy? U can read international nissan forums too but it's about enthusiasm.

We've to sometimes tell others about both options. If we do this things will work too.

Not every person here is that much enthusiastic. Some people get stuck in problems they don't know actual functionality.

But when you also know this jispe debate horahi hai usko agar ap vss through ecu na chalao toh fuel mileage nahi disturb hogi.

Ismein u can say it's ur choice to get it done via ecu or without ecu.

So thats my point.
I've practically implemented both. So islea i am saying vss isn't that big actor incase of this normal QG.

Values definitely store hoti hongi us ic mein.

So ap shayad mera point nai samjhay mein kya kehna chahta hun.

[IsbCap]

For some, a trouble free working vehicle within allowed budget is all that is required. So us person ko VSS jaisi truck ki batti k peechay laganay ka koi faida nahin

If it manages a return Lahore tour in single day with 16kpl and occasional speeding up to 195, it's fine

[dani_kk]

For some, a trouble free working vehicle within allowed budget is all that is required. So us person ko VSS jaisi truck ki batti k peechay laganay ka koi faida nahin

If it manages a return Lahore tour in single day with 16kpl and occasional speeding up to 195, it's fine

Exactly that's the need of most of the people.

[saanni_79]

^^^
Pin 8 is for tachometer (RPM meter)

The lights you are referring to in above post are instrument cluster lights, not the sensor lights (There doesn't exist any such thing in the world, lol)

This meter won't be able to interact with ECU for VSS thing.

Mine is giving good economy and power without VSS. It sure isn't a perfect setup, but a good working one...!!! With wire driven setup, your speedo should work fine through speedo cable. Don't know about how to make RPM meter working. I think there should be another cable for that from gearbox???

Pin#08 , like below pic?

[saanni_79]

I have replaced the cluster, all works fine except RPM. Couldn't sort out, which wires to be connected. VSS issue will be fixed later if needed.

[FBB]

Kisi k pass mere ecu ki manuals hon to please let me know, so I also get full benefit from it. My ECU pic is below.

Sent from my Z12 using Tapatalk

[IsbCap]

Pin#08 , like below pic?

Yes. This is the exact diagram of your 3-row ECU. Text is in Russian language :P.

[saanni_79]

Please advise OBD2 port availability & price..

Air pipe also refused to fit due to space constraints b/w AC pipe and sound bottle attached with air pipe. MAF sensor pipe is also with big diameter.

The engine is like having extra acceleration. Whenever we reduce the acceleration by wire adjustment, engine stops on idle. The electrician / mechanic are saying that it can only be fixed after RPM meter installation. Any suggestion.