HPFP Connection

[ATinOf]

Here's a frustrating one, the High Pressure Fuel Pump connection (to the regulator N276) has a bit of an issue. Now I have trawled through all the connector diagrams on ELSA and I cannot for the life of me find a part ref for this one. The pumps are identical both sides, the other connector is sound, but this one has had it, and the locking tab on its mating part at the pump has also gone. I suspect the pump is on its way too judging by the noise its making.

Its a long shot - but does anyone know the ref for this connector?
FleabaysRus have some generic audi ones listed but they do not look the same, they do not protrude like these do...
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The good side looks like this

[ATinOf]

Part 31 on this diagram looks like it, but the opposing banks loom does not have one and I think this is under the inlet manifold anyway so for something else... and ths site does not list any ref for part 31 anyway...
(diagram taken from here https://www.lllparts.co.uk/catalogs/aud ... 971/971060)
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[ATinOf]

Good news - managed to track down the part ref; 4F0973202

There are some available (prewired with 6 inches of cable sadly) from Germany, but Im still trying to track them down as an unterminated kit of parts to re-crimp in place...

[ATinOf]

So a quick update, I have found a seller online listing these as equivalent;

MCON 07P973702 , FEP 42811400

and they do look the same apart from the crimp retention mechanism which shouldn't affect this, so I have ordered a pair (so I have a spare) to see if they fit, watch this space ...

[Jim Haseltine]

Noise from the pump could be that the cam follower is worn. Unlike some other models I don't think it's common on the V10 but it's something to check before laying out for a new pump.

[ATinOf]

Good heads up Jim, thanks. That'd be a rocker cover off job to check, sods law the side I think is noisy is the side with the fine oil separator on it

Lets just hope it quietens down when I fix the regulator connection, assuming its squeeling (intermittently) due to a lack/bad connection ...

[Jim Haseltine]

I think checking is easier than that - disconnect and remove the pump (taking care not to drop the plunger rod) then you can see the top of the follower - the wear on other engines is clearly visible on the upper surface of it. On some the plunger actually cuts a hole in the follower top face.

[ATinOf]

Aaah, so you are referring to the interface between the pump plunger and the cam follower, not the camshaft interface, I see

[ATinOf]

While waiting for the part from Germany, its left the seller, but not arrived in the UK yet, I butt-soldered the broken socket-pin and 'offered' the connection up to the pump. Bit Heath Robinson but good enough for a test (definitely would not consider a road trip, without the back half of the connector moulding in place the back end of those pin ends clamping round the seals could short, mighty close and a butt soldered joint would not last long with vibrations). But, the test certainly did quieten down that pump back to normality, so I'm happy with that I think (subject to final test drive), just need that new connector....

[ATinOf]

Just to close this one off I can confirm the equivalents ordered as above fit like a glove, I don't have a retention clip on bank 1 still but its a tight fit with the weatherproof seal so we will see how it goes. Those pumps are expensive just for the lack of retention if I can get away with it.

[IanH755]

Is it worth a small blob of silicon/sealant etc on the back of the plug to hold it in place "just in case"?