Sensors in 4A-fe Second generation

[fahadsoulsnatcher911]

AOA,
1.Can anyone tell me about all the sensors found in a 4A-fe motor !
2. How to clean them and will it affect mileage ?

[lovesleeping]

dude if ur car is running f9 why are u in mood to feedling with it

[fahadsoulsnatcher911]

dude if ur car is running f9 why are u in mood to feedling with it

Its not running fine thats why i posted this
Its consuming alot of fuel and performance has also decreased

[Xulfiqar]

fuel as in CNG or petrol?

[fahadsoulsnatcher911]

fuel as in CNG or petrol?

Mostly on CNG
But there is a lack in performance on petrol too yesterday while checking oils and fluids i came across a sensor that was Toyota Assy vacuum it was dirty so thats why i wanted to know about all the sensors of my car and how to clean them
And does 4Afe has a MAP/MAF sensor ?

[Xulfiqar]

that vacuum sensor assy is the MAP sensor, and it never gets dirty as its signal line has a filter on the inlet manifold itself.

the usual cause of bad running on a 4AFE that has been run on CNG is sludging of the inlet manifold and gummed injectors - a good sonic clean and inlet cleaning (its took off anyway to remove the injectors) along with a new fuel filter will do all the good you want.

Also check the ignition timing.

[fahadsoulsnatcher911]

that vacuum sensor assy is the MAP sensor, and it never gets dirty as its signal line has a filter on the inlet manifold itself.

the usual cause of bad running on a 4AFE that has been run on CNG is sludging of the inlet manifold and gummed injectors - a good sonic clean and inlet cleaning (its took off anyway to remove the injectors) along with a new fuel filter will do all the good you want.

Also check the ignition timing.

the thing is the sensor is not on the TB (it has tapped wiring some juggar has been done perhaps )
So just need to get the sensors cleaned and a new fuel filter , would it be suitable to get the fuel tank cleaned too ? Do you advise it ?
And how to check ignition timing im a noob to all this

[Xulfiqar]

the wiring you see on the MAP sensor wires are the advancer wires - which is incorrect for this engine anyway.

The ignition timing on this engine is set by putting into diag mode (short terminals TE1 and E1) in the diagnosis box, start the engine, when at operating temperature and cooling fan just shuts off - you inspect the timing with a strobe light. Adjust distributor as necessary.

[fahadsoulsnatcher911]

the wiring you see on the MAP sensor wires are the advancer wires - which is incorrect for this engine anyway.

The ignition timing on this engine is set by putting into diag mode (short terminals TE1 and E1) in the diagnosis box, start the engine, when at operating temperature and cooling fan just shuts off - you inspect the timing with a strobe light. Adjust distributor as necessary.

I dont have a strobe light so what to do now ?

[fahadsoulsnatcher911]

xulfiqar bhai.
i installed an app on my nokia 5800xm called strobe it makes the camera flash into a strobe light. iwanted to know that could i use it? its has multiple setting for blinking.

[Xulfiqar]

I dont have a strobe light so what to do now ?

you find a mechanic who has one - its called timing gun in their language.

[memad]

xulfiqar bhai.
i installed an app on my nokia 5800xm called strobe it makes the camera flash into a strobe light. iwanted to know that could i use it? its has multiple setting for blinking.

If you can trigger your mobile phone light from the induction current of HT wire of first cylinder before getting it toasted then you are good to go your self otherwise do as Xulfiqar said.

[fahadsoulsnatcher911]

thanks brother.
well should i do a complete over hauling of my engine?
its 194345 km done 1995 model Toyota corona.
but the interesting fact is that the oil still after the oil change date was red as brand new.
and what will you recommend to do if i overhaul the .eg changing some parts or e.t.c.
regard fahad

[Xulfiqar]

if its working good - dont mess with it.

[fahadsoulsnatcher911]

If you can trigger your mobile phone light from the induction current of HT wire of first cylinder before getting it toasted then you are good to go your self otherwise do as Xulfiqar said.

brother this is good app .
if you have a Symbian smartphone try it and i would also recommend onscreen speedometer its is quite accurate.:)

[memad]

brother this is good app .
if you have a Symbian smartphone try it and i would also recommend onscreen speedometer its is quite accurate.:)

Thanks for the offer, do share the application download link, though I do not use Symbian phone any more but can recomend to some one else.

[fahadsoulsnatcher911]

@all these weird comments are by my brother the phone and overhaul ones
anyway ill get it done by a professional and will that improve Cng mileage too ?