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View Full Version : Where is the N75 valve - (Various engine photos)


JezzaL
20-08-2009, 08:28 PM
Can anyone direct me further to where i would find the N75 valve ? Going to try testing the resistance level.

thanks.
robetere
21-08-2009, 04:42 PM
Item 4 is the N75 Valve

The other pic is it up close.

You should have 25 - 30 ohms resistance between the pins.

These pics are for the engine AGU

What is your engine code?
JezzaL
21-08-2009, 04:56 PM
ASV. I've seen this picture on another thread, but can't find the N75 on my car?

Do my pictures help at all ?
robetere
21-08-2009, 05:20 PM
Here are pictures pertinent to your engine.

It's Item 2 in the pictures.

Resistance for your N75 should be between 14-20 Ohms

On the connector:

Pin 1 should be Earth.

Pin 2 should be battery voltage with the ignition on.
JezzaL
21-08-2009, 06:03 PM
thanks robetere.

Much appreciated
JezzaL
21-08-2009, 06:26 PM
Here are pictures pertinent to your engine.

It's Item 2 in the pictures.

Resistance for your N75 should be between 14-20 Ohms

On the connector:

Pin 1 should be Earth.

Pin 2 should be battery voltage with the ignition on.

Just checked it - 17.2 Ohms.
robetere
21-08-2009, 06:31 PM
That's good then. What are the symptoms of your problem?
JezzaL
21-08-2009, 07:04 PM
Sudden loss of power at 70mph. I can get some acceleration at the very top of pedal, nothing when fully depressed.

I replaced the MAF. Does the battery need disconnecting after doing this ?
robetere
21-08-2009, 08:07 PM
The battery does not need disconnecting.

Have you tried doing fault a scan with VagCom?
20vtel
22-08-2009, 08:20 PM
It could be that your throttle body needs to be reset. It can be done with vagcom. Have you recently disconnected the battery or had the ECU remapped?
Crasher
22-08-2009, 08:52 PM
Throttle body reset on a TDI???
20vtel
22-08-2009, 08:57 PM
sorry crasher, i didnt realise it was a TDI we were talking about. i should have known from the pics that were posted.
JezzaL
23-08-2009, 10:44 AM
No, and No to questions.

i guess from what the subsequent posts say this doesn't apply to TDi.

thanks.
JezzaL
27-08-2009, 02:34 PM
Just got off the phone to the mechanic who does my MOT. The car has been put on diagnostic tool, indicating a boost loss issue.

They have advised me to check all the pipes into the engine to look for splits. Failing that an issue with the booster (Valve - what is this?) ??

Anyone got any ideas on this ? I've not got the codes yet, car still under going MOT.
Crasher
28-08-2009, 01:11 PM
Give us the codes.
Bob Hothersall
16-03-2015, 07:38 PM
hi can any one tell me were my map sensor is on my a3 1.9 tdi pic would be great thanks
Crasher
17-03-2015, 10:22 AM
Which year and engine code?