Idle problem polo 6n2 1.4 16v

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Eli_101
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Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Hi friends,
I hope someone could help me pls.
When I turn my polo 6n2. 1.4. 16v 2001 AHW on and its on idle it starts to vibrate and shake a little bit and then the rpm goes up and down above 10.
I know it could be vacuum leaks, EGR system malfunctions, malfunctioning oxygen sensors, dirty fuel injectors, fuel pump malfunction, faulty spark plugs, a faulty mass airflow sensor, or a faulty throttle position sensor, so I was thinking instead of paying for diagnostic test 100usd better I would invest buying a car diagnostic tool that I will be able to use it for my polo and also for my ford mondeo titanium 2009. 2.3L
Any idea friends what should I buy?
Going back to my polo issue, I notices a broken little air pipe, maybe this could be the problem?
I attached a photo.
Thanks in advance for any help from you!
Best regards!
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JUUL
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Re: Idle problem polo 6n2 1.4 16v

Post by JUUL »

Scan tool:
If I may give you my advice, based on my own experience, I would surely recommend iCarsoft. There are many manufacturers which make good products, but I've only worked with iCarsoft. Depending on your needs and finance, iCarsoft has base entry-level OBD tools as well as high end all-purpose OBD tools. Interface is simple and service is good. So yeah, I would surely recommend it. But please inform yourself correctly, there are many scan tool manufacturers to choose from.

Air pipe:
The gray/metal part in the background to which the hose/pipe is attached to, is the fuel pressure regulator. So I'm almost certain that this can cause faults with your idle. My Polo has the same engine and the hose goes further down into the engine, but I cannot see where it leads to. Search around that area for a thin hose which should be loose. That hose goes into the part you are holding in the picture.
Eli_101
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Posts: 11
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Drives: Mk3 6n2 16v 2001 1390 AHW
Location: Israel

Re: Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Hi dear Juul,
Thank you very much for helping me again!
I am much appreciate your detailed reply!
Regarding icarsoft, what is their lowest model they have, That can do the work. If I had a garage of course I whould prefer to buy the most expensive tool. 😊

According your answer about that little hose/pipe, I believe that it could be my problem! 👍
I will check that pipe line where it should be connected and fix it. I will update if it fixed the problem.

Thank you so much again dear Juul!

Best regards,
Eli
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JUUL
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Re: Idle problem polo 6n2 1.4 16v

Post by JUUL »

Hi Eli,

No problem, just trying to help. I own the iCarsoft VAWS V1.0 for Audi/VW/Seat/Skoda, that's one of the cheapest. You can buy the same model which is universal, so not only for VAG.

https://www.icarsoft.com/Product/s-313- ... ws_v1.html
https://www.icarsoft.com/Product/s-295- ... _i820.html

With this tool I can read faults in 137 different modules, depending on which modules are equipped on the particular vehicle. I can use this tool on VAG cars from 1994 until now (OBD1 and OBD2). With exception of the oil service interval, I cannot program or change any settings in the ecu, just read and erase fault codes. Also I can read live data if necessary. I'm a hobby mechanic, I do all service/repairs by myself, so for me this tool is adequate. In the future I will purchase a better model with more possibilities and for different car brands because in my family/friend circle I tend to help when servicing or repairing their cars. I'm interested in the iCarsoft CR Max.

I hope to have pointed you in the right direction and please remember...I speak out of my own experience. Please inform yourself correctly, there are many OBD tool manufacturers to choose from :mrgreen:
Eli_101
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Drives: Mk3 6n2 16v 2001 1390 AHW
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Re: Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Thanks dear Juul for your reply!

Regarding this tiny pipe which connected to the fuel regulator, still didn’t succeed to find where the hell its connected to.. even in vag parts catalog there is no information. So I have 2 options left, to find a similar model of polo and trace the pipe line or to visit vw garage. 😀

Thanks Juul and Best regards!
Eli
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JUUL
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Re: Idle problem polo 6n2 1.4 16v

Post by JUUL »

Hi Eli,

After googling "1.4 16v fuel pressure regulator" I came across this picture. In the photo you can see that the vacuum hose out of the regulator goes into the inlet manifold. Hope this helps :mrgreen:

Image
Eli_101
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Re: Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Hi dear Juul,

Of course it helps!! :D
Thanks a lot my friend for your effort!
Best regards,
Eli
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JUUL
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Re: Idle problem polo 6n2 1.4 16v

Post by JUUL »

Glad I could help. Cheers mate :mrgreen:
Eli_101
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Re: Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Hi Juul,

How are you? Hope you’re fine.
I have been searching again and again and find that this hole on the inlet manifold is connected to other place, But I noticed that there is a little air connector on the air valve that leads air to the Vacuum servo that was not connected to nothing.. and it has the same diameter of the fuel regulator connector, so I connected them with the pipe and now the Car idle went back to normal, and the engine works smooth and not smoking!
I attached a photo of this pipe, hope it could help others to solve this problem. :lol:

Thank you very much Juul my friend,
God bless you!
Eli
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JUUL
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Re: Idle problem polo 6n2 1.4 16v

Post by JUUL »

Hello my friend, I'm very glad to hear your problem is resolved. Luckily it was something simple and inexpensive. Don't worry about it, I'm already happy I was able to help. Uhm...I'm an atheist...but I respect and accept your blessings. Now you can enjoy driving your car once more. Good times ahead :mrgreen:
Eli_101
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Re: Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Thanks Juul :)
Have a great day my friend!
Eli
Eli_101
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Re: Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Hello Juul my friend,

I just wanted to update you and all the other users for the right solution I had with that vacuum pipe..
I discovered the right hole where the fuel regulator vacuum pipe should be connected too. It’s at the side of the engine just below the fuel regulator!
(so now I have another issue, where to connect that tiny vacuum hole from the break servo? )
I attached a photo, hope it will help everyone who has this issue, on polo 6n2. AHW 1.4 16v cause I didn’t find any clear photo or information about this on the web.
Enjoy and special thanks for Juul for helping me along the way..

Best Regards,
Eli
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Eli_101
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Drives: Mk3 6n2 16v 2001 1390 AHW
Location: Israel

Re: Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Now I need to find out to where this tiny air vacuum hose should be connected to? (marked in black round on the attached photo).
The big hose is connected to the break servo, this we know.
thanks for any help from you friends,
best regards,
Eli
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Eli_101
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Posts: 11
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Drives: Mk3 6n2 16v 2001 1390 AHW
Location: Israel

Re: Idle problem polo 6n2 1.4 16v

Post by Eli_101 »

Hi friends,
Please could someone help?
It’s not such a big request 😁
If you have polo 6n2, when you check oil or water level have a quick look where this hose is connected to.. that’s it very simple 😃
I know there is a tiny hose down the throttle, should it be connected to there?
Thanks a lot in advance for any help from you.
Best regards to you all,
Eli
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