Bang my head: call to all experts, Corolla

[aoun556]

in my case it was emulator fault.just give this a try it wont cost u.borrow emulator from some friend for one day and try this.u r saying it runs fine on cng even in cold so that means ur emulator is not giving correct signals to injectors thats y it stalls on petrol.if this has something to do with throttle or some sensor then it should also behave same on cng.anyways its my guess so u can try.i tried and it worked in my case.

[talhawaleed]

in my case it was emulator fault.just give this a try it wont cost u.borrow emulator from some friend for Reply With Quoteone day and try this.u r saying it runs fine on cng even in cold so that means ur emulator is not giving correct signals to injectors thats y it stalls on petrol.if this has something to do with throttle or some sensor then it should also behave same on cng.anyways its my guess so u can try.i tried and it worked in my case.

CNG changeover switch powers the three solenoid valves on reducer, monometer and Advancer/Emulator simultaneously. Changeover switch is connected with Ignition coils, so once it senses that ignition coil is receiving power or transmitting signal then with slight delay it simultaneously provides power to the solenoids, Advancer/Emulator, Monometer and stops the power to injectors through its own wiring harness. If conversion fails because of engine not receiving gas then engine shuts down, Power to ignition coil disconnects and power to solenoids, monometer and advancer/emulator is withdrawn.

What you are saying is, even though power to injectors are restored but somehow Advancer/Emulator still remains on and keeps on sending the signal originally meant for CNG to the ECU.

1. This can easily be checked by measuring the volts on solenoid valve, looking below into advancer/emulator lights such as if it is still receiving power even on petrol.

Anyway, advancer/emulator turns off on petrol, it does not control injectors timings as its only function is to stop injectors once powered on and restore the power to the injectors once advancer/emulator is turned off.

I will look into the possibility of wrong cng wiring and I already have a brand new spare TL advancer/emulator with me which I will try on this.

[mianaasim]

Our corolla was giving a similar issue. We took it to magic motors. Injectors were ultrasonically cleaned, throttle body serviced, plugs were black and so they too were replaced. Then he connected obd scanner and said that oxygen level in mixture is less than optimum, his helper adjusted something near the air filter box (I was inside the car so didnt see where). Car is normal now

He was seeing oxygen level from the obd scanner. Initially it was 11.6 percent and he adjusted it to 12

Sent from my SGH-T989 using PW Forums mobile app

Wat did they charged u?

[nasir_shaheen]

Dear talha I am having same problem as u had in corolla. I think u advanced ur car from tps sensor at throttle. But there is no adjustment space in tps. Plz tell me how to adjust?

[pwuser156078456752]

Change the race cable(which opens the throttle by pressing accelerator) with origional one,origional race cable is about 2200,i have installed recently in my se saloon,also fix this cable properly by good mechanic,and also reset the computer of vehicle by mechanic through efi scanning tool.this may solve your problem.

[def3nder]

Yeh kis chez ka solution bata rahe ho ap ?

[nasir_shaheen]

Thanks

[pwuser154237431018]

Atta Bahi i have corolla se saloon 2004 model by car give 6 km/liter phelay 3/4km/liter say b ziyada nai deti thi kuch kam kara kar 8tna ponchay it was on cng when i buy but i don't use it on CNG jab le thi black smoke and jahlnay ki smell arai thi i followed follwo procedures

1. Tuning of car but no result
2. Change throttle body ku k us condition sahe nao thi and idling b sahe thi and MAF sensor as mechanic said k ye ish ka original nay original k uper E lika hota hay. Khar throttle body say us ka idle sahe howa. Liken abi thak b black smoke and jalny ki smell thi
   3.pir ish k ander injector OEM no 23250-22080 installed thi i change then and bought kabuli same but the abi thak b 3/4 km/liter ki averge thi
3. Pir i shop walay nay mujy toyota aqua 1.5 orange colour injector diye us say average 6km/liter ponchi
4. Abi recently ak or mechanic ko dhekaya us nay pir MAF change kiya kaha k ish ka C wala atha hay

Har kohe apni expertise show kar rahay but no result yet. Youtube par ak video dheki varaible resistor ki mansoor ahmed auto shop ki us nay yahe 1.6 se saloom and he said ki ye kam az kam 2.4 volt hona chaye hay i checked mine with multimeter it gives 2.91 voltage.

Now can you help me out bro

[haseeb.basharat]

Injectors ultrasonic cleaning:

Never clean toyota injectors with ultrasound. Always use injector cleaner fluid.

[pwuser154237431018]

Bahi ye ish ka real name kya hay VAF hay ya Varaible Resistor. And dusri bath agr multimeter par isho kasay check kiya jatha hay engine start ho ya switch off and ish ki normal voltage kya hay 2.4 volt ya it depend on altitude as well and how to adjust. Ignition on par i checked my car from yellow wire connect to positive wire 9f multimeter and blue wire with ground wire of multimeter my reading is 2.9 volts

[pwuser154237431018]

Thala bahi part number 89456-30010 this is also applicable in 3zz-fe engine toyota corolla se saloon 2004. Mera i said k 3.0 volt de raha and us k uper kohe part number mentioned nai tha i bought from scrap market one aforementioned partnumbe and check is voltage its giving 2.24V is ki default setting kya hay. Acha ak aur chez kuch chalnay k bad with new resistor ak shuuuuu jasi awaz arai hay pulley side say kya ish ki waja say hay ya Ac or power motor ki awaz hogi

[def3nder]

https://www.toyodiy.com/parts/q.html

Use this link. chassis number enter karo. search for the real part. ap ki gari ki sari info and kon kon sa part chae hai sab kuch codes k sath mil jae ga.

Jaha tak burning smell and black smoke ki bat hai. ap ki gari petrol zayada kha rahi hai. get your good to any good electrician jo efi gario ka kam samjta ho. mistero sey nahi thek honi yeh masala. kabil electrician hua tou wo injector dekh k bata de ga k fuel filter ya fuel pump thek kam kar raha hai ya nahi.

[pwuser156266196232]

Salam, can you please guide me how to adjust this resistor, I can't find in rotating part or screw here to vary the resistance. If you can please guide me what tool you used to rotate it?

[SER_GTR]

it had special key to rotate that knob.....its like triangle shape which fits inside...

1st locate the resistor and look for knob inside .you will see it

[pwuser156266196232]

Ues i have located the resistor, but can't find the knob.
Infact i have broken one semicircle trying to rotate it
Can you please share the picture or name of tool?
but it is still working, giving voltage 4.8 which is same as before i removed it Uploading...]()

[SER_GTR]

if its broken then leave it as it is...dont try to adjust if you dont face any issue

[khanjunaid.qwe]

bhai ap apna number dedo mujy

[Hassan1991]

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