Vacuum lines in 4AFE (Recently swapped)

[shanii89]

Aoa guys
So as most of you know that I have swapped my corolla 1999’s engine with 4AFE Recently
i noticed that whenever i turn the power steering the engine switches off. So upon inspection i noticed that below power steering pump the two vacuum tubes are empty and there is no vacuum lines attached to them. Also there are other vacuum lines missing ( like on air filter assembly)
So guys is there any diagram for lines from which i can easily complete my all missing lines
Thanks

[aziz.rehan]

U mean while driving car gets off or when parked?

[Xulfiqar]

Why didnt your mechanic install them?

[shanii89]

Brother it turns off while driving
Both on slow (1st gear). And on high speed also

[shanii89]

Actually my mechanic is doing hit trial from last 3 days
He also dead plugged few lines
So i wanted to try to resolve my self

[shanii89]

Dead plugged

[shanii89]

This is also dead plugged

Found this metal tube empty right next to power steering pump

And tube are empty located Below ps pump.

[Xulfiqar]

there is a branched section for vacuum under the manifold, its the source of vacuum for the power steering pressure switch and also the AC idle up switch, The pressure switch on power steering connects to the manifold and so does the AC idle up. Its very easy - infact all old toyota fuel injected engines including the 1UZ were like that.

The top connection from throttle body goes to the EVAP purge solenoid.

Why did you hire a dumbass for this work?

[Xulfiqar]

the top pic is the return path for the AC idle up solenoid - which is missing from your swap.

the lower pic is the vacuum source line for your power steering pump pressure switch (it raises engine rpm when the steering is turned and high pressure is demanded from pump)

[shanii89]

Brother i didnt know that he was so unprofessional until i found these simple stupid mistakes

[shanii89]

Thanks Brother. Can you provide a video or pictures of similar engine
It will be easier for me

[asadmir27]

AOA
I am facing same problems, all kinds of jugarh are made with the car I purchased almost a year ago, it is Toyota Corolla 1988, 4afe, 16 valve.
Map sensor is connected in a weird place, etc

[sardarg]

sir please mention your location

[syedbasitalishah001]

Exactly! My car is a 1995 Indus with an Auto 4AFE. When it came to me 8 months back, it had Vitz injectors, a 5AFE ECU and a messed up Vacuum hose setting. I rectified the injector and ecu by replacing with original 4AFE ones but my vacuum lines I'm still not convinced yet. My car does 5-6 kmpl in city with AC. My engine check light is ON. When I found out using a conventional self diagnostic setting for OBD1, it shows error code 12. The internet says it is distributor error. But my car starts and runs fine.
If anybody has a diagram of the original Vacuum hose setting for a 4AFE Auto along with the correct MAP sensor pic, please share. It will be a great help. Thanks. Jazaka Allah khair

[Xulfiqar]

The map sensor connects to the inlet manifold, there will be a maroon/red filter where the vacuum line connects to.

The other vacuum users are the power steering pressure switch and the ac idle up air solenoid, both share vacuum from a “tree” that connects to the lower intake manifold, it has wider hoses than the map sensor.

Make sure your throttle body doesnt have a gasket that is blocking some ports, the fresh air vent for the pcv is also there, if its blocked the pcv wont work.

For error 12, you are missing the igf signal, check your wiring if you have no misfire. The igf signal is “ignitor feedback” confirming ignition event.

Most probably you have really messed up wiring.

Also make sure your sta wire is correctly wired up, without a sta line connection to ecu, your engine will drink petrol like crazy. Sta is the startup signal to ecu.

[syedbasitalishah001]

Xulfiqar bhai thank you very much for your very valuable insight and guidance. Unfortunately, I have no idea about electronics' stuff. IGF or STA are terms alien to me. Could you please guide me further as to rectify by myself or to get a proper trained electrician to fault finding and do the job efficiently in Karachi.

[syedbasitalishah001]

How to check for misfiring and IGF signal?
And how to know if STA is connected to ECU or not? My full tank empties within approx 220-230 kms
Please, desperate help required.
Jazaka Allah khair

[Xulfiqar]

As you have said that you are completely novice in this, you need to hire services of a proper electrician who can wire up the whole ecu like it was from factory.

Sta and nsw pin in ecu recieve 12v+ve when the key is in start position, this changes the ecu to starting mode. Once the ecu starts receiving crank sensor input (NE) above 300 rpm and key is let go, the ecu then transfers to “run mode”, without ecu in run mode, your ecu will basically fire all injectors in batch mode and retard ignition timing resulting in very poor mileage.

[syedbasitalishah001]

Jazaka Allah khair. In that case can you guide me to a learned electrician who knows his stuff especially 4AFEs in Karachi? Actually majority of the mechanics are used to 4E and 2E, etc. for Indus Corollas.

[asadmir27]

Assalam o alaikum everyone

My car has serious idle issues, also I am facing severe missing, power loss, specially on CNG.

Apart from idle and missing problem, I have another problem i.e when I turn on A.C or when I turn on the head lights my rpm goes down, if rpm is 1000, on turning on the lights or AC it goes down to around 800 or 700.

Also, when I pick up the car, the rpm for a micro second goes down significantly and then comes up.

If accelerator pedal is not pressed, while conversion from petrol to CNG, the car shuts down during conversion.

Also, I have some of the vacuum lines of intake manifold assembly dead plugged and one from fuel injectors assembly is UN plugged.

My map sensor is in kind of weird place and and is not connected to where it should have been.

I am trying to attach the files but I could not, if someone could help me on attaching files, I will be grateful.

I have Toyota Corolla Q CE 90 with 1C engine originally which was swapped to to 4AFE back then.

I am from Mansehra, hence cannot enjoy the luxury of good mechanics.

Thanks and Regards

And jaza KALLAH

My TPS sensor apparently seems faulty.