2013 Passat TDI Low Fuel Pressure

[Dr Sheldon]

The connector/s are secured with metal "lock" rivetted in place. I mean, the lock can be removed with a grinder ...

Then remove the shear bolts !! The are not rivets !!

 

[Dr Sheldon]

Fuses are good, battery voltage good.

WTF is "GOOD "

The wiring at lift pump was checked , not getting hot, no signs heating up at the plug.

Pound to a penny you will not resolve this !!


Unwilling to take anything on board !!

Been struggling since last year ~ August time ??

Scrap the thing - Go again !!

 

[Dr Sheldon]

Hickleys :: Delphi YDT840 Hydraulic Diagnostic Tester

Delphi YDT840 Hydraulic Diagnostic Tester

www.hickleys.com

Did you buy that ?

 

[passdattdi]

https://imgur.com/a/s7IxEg5

So, checking resistance between fps and ECU. What is the T60/55? I don't see a 55. Only thing I see is a 56. No 54 either.

 

[Uwe]

I don't see a 55. Only thing I see is a 56. No 54 either.

Are you saying there's no wire in the harness connector at position 55? Because the ECU's connector clearly has pins in all the positions of T60.

-Uwe-

 

[passdattdi]

There is. I was expecting to see something different. Figured it out.

 

[passdattdi]

Fuel Metering Valve
7.5 ohms, in range

Voltage at 13.27, same as battery.


Terminal 1 to T60/60 at 0.4 ohms. In range.


Fuel Pressure Regulator Valve

Resistance at 7 ohms.

Voltage at 13.23.

1 to T60/45 at 0.4 ohms.


Fuel Pressure Sensor

5.3 volts.

2 to T60/55 at 0.3 ohms.

1 to T60/56 @ 0.5 ohms.

3 to T60/54 at 0.4 ohms

All seems within specs.

 

[Dr Sheldon]

Fuel Metering Valve
7.5 ohms, in range

BUT NOT Conclusive !!

The days of resistance measurement across an actuator are long gone !! There is more to that "12v" IMV than the "Windings" that you are testing with a "9v" DVOM

Your test ideology is far from Ideal !! Flawed at best !!

All seems within specs

WTF does seems mean ?? A wishy washy statement - Neither a yes or a no !!

Pound to a penny you will not resolve this !!

Your basics are AWOL !! - Long gone !!

 

[passdattdi]

 

[passdattdi]

BUT NOT Conclusive !!

The days of resistance measurement across an actuator are long gone !! There is more to that "12v" IMV than the "Windings" that you are testing with a "9v" DVOM

Your test ideology is far from Ideal !! Flawed at best !!


WTF does seems mean ?? A wishy washy statement - Neither a yes or a no !!



Your basics are AWOL !! - Long gone !!

Then what's the way slick? You just say not conclusive, not valid, wishy washy, blah, idealogies, blah. But you never provide anything useful. You only tear down what member dasboots is suggesting to do. You saying he is wrong.

 

[Dr Sheldon]

Then what's the way slick? You just say not conclusive, not valid, wishy washy, blah, ideologies, blah.

The way forward with P0087 is correct tooling. Which you do not have and are not willing to acquire.

A scope, Pressure Transducers. Flow Meters - Additional hardware to "T" them in. High Pressure Diesel Pump Test Kit and Accessories.

Circa ~$10k there !!

But you never provide anything useful. You only tear down what member dasboots is suggesting to do.

It is all useful. Except for you !!

You dont want to hear it !!

I've said it before, that can be nailed in 200 minutes !! Done and dusted !! With the right knowledge and tooling !!

 

[Uwe]

Circa ~$10k there !!

Right, but it makes absolutely no sense for an individual to acquire all those things to fix just one 12 year old car.

-Uwe-

 

[Dr Sheldon]

Right, but it makes absolutely no sense for an individual to acquire all those things to fix just one 12 year old car.

-Uwe-

No sense at all - Agreed !!

Add insult to injury most garages will not have that equipment either.

But how else will he correctly solve his problem short of keep throwing parts at it ? The forum will struggle because OP cannot make measurements.

He has been struggling for months now !

 

[passdattdi]

Right, but it makes absolutely no sense for an individual to acquire all those things to fix just one 12 year old car.

-Uwe-

Do I read correctly; is that a $10,000 dollar item/s cost the guy is trying to get me to buy? Admittedly, and obviously, I'm just trying to do what I can before having to pay more than parts have cost me thus far once in a shop. I have other cars, I'm not in desperate need nor time constraints. This dude is off his rocker. Must be a vendor

 

[passdattdi]

Forums are voluntary where people WANT AND CHOOSE to give information. It is not mandatory. You sir Sheldon, do not have to participate.

 

[Dr Sheldon]

Do I read correctly; is that a $10,000 dollar item/s cost the guy is trying to get me to buy?

Must be a vendor

Nope not Vendor. But I do have all that equipment and more - Shed loads more !!

So I do not know a way of diagnosing P0087 without that tooling !!

I do, however, know how to solve that with the right test equipment. That is what I do day in day out !!

And my

This dude is off his rocker.

I am far from off my rocker !!

My job is to diagnose correctly first time - For that reason I have invested many thousands in the tools I need.

When posting on the forum I will never consider the financial implications to the motorist, you for example, not my problem, your money, your car, your ball ache !!

Equally my finances are never mentioned - that's my ball ache !


My posts here in this thread have been accurate and helpful !! Educational even.
If you are not able to magic up that tooling, or absorb the science then that is that - Carry on !!

Dont go knocking me !!

 

[Dr Sheldon]

WANT AND CHOOSE to give information

Indeed !!

 

[passdattdi]

Well, installed new HPFP. Code P0087 gone! No shrapnel from old HPFP, no glitter , nothing to be found and yet this is what cleared that code and no more limp mode.
However, seems there may be some adjustments yet to be made. The fuel filter housing appears to be under added pressure and fuel leaking. The o ring from filter is showing since it's being "squeezed" thru housing top. Even metal lid is bending some. Do these give way after being under pressure for so long or is there too much pressure now? Yes, screws were torqued down. In fact they are not raised or stripped. Is there some additional vcds functions to perform for learning/unlearning or adaptations or some sort? Thanks

https://imgur.com/a/HvnDcwq

 

[passdattdi]

Nope not Vendor. But I do have all that equipment and more - Shed loads more !!

So I do not know a way of diagnosing P0087 without that tooling !!

I do, however, know how to solve that with the right test equipment. That is what I do day in day out !!

And my



I am far from off my rocker !!

My job is to diagnose correctly first time - For that reason I have invested many thousands in the tools I need.

When posting on the forum I will never consider the financial implications to the motorist, you for example, not my problem, your money, your car, your ball ache !!

Equally my finances are never mentioned - that's my ball ache !


My posts here in this thread have been accurate and helpful !! Educational even.
If you are not able to magic up that tooling, or absorb the science then that is that - Carry on !!

Dont go knocking me !!

Your knowledge, I do not doubt.

 

[passdattdi]

https://imgur.com/a/GEIlgP4

The square sides are where it opened up.
This evidently not OEM fuel filter. Ring comes off without much resistance. Only happens with engine on. If prime with vcds, no issues. I have OEM parts on order. Just baffled that the metal lid gave way as opposed to a hose or something else.