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Discussion Starter · #4 ·
Yes I was driving normally then started jerking like it was the coil packs but couldn't be cuz I just replaced them. Then mil cstarted blinking then stayed on . I pulled over and shut it off for a couple min . Hesitates to turn on but still starts up . According to a private mechanic car has one pump in rear n one under the hood (high pressure ) wanted to know an estimate if anyone replaced one before ?
 

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HPFP failures apply to diesels and aren't nice!

You need to get the car plugged in to VCDS and see what fault codes are registered.

Record them. Clear them. Drive the car.

Put it back on VCDS and see what, if any, faults have returned.

Post the results on here and someone might be able to help you.
 

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I think I understand where the confusion is coming from.

There is an HPFP on the FSI engine.

The fuel rail operates at 110 bar (1600 PSI). The only way to get there is an HPFP. The HPFP on the FSI 3.6 (and the smaller 4 cylinder FSI motors too) is mounted to the block and driven by the crankshaft. See page 36-38 in the attached SSP.

Now - what he describes doesn't sound like the HPFP. I would check things in this order:

  • Coil packs
  • LP Fuel Pump / Fuel Filter (tank mounted)
  • Injectors
GL!
 

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I think I understand where the confusion is coming from.

There is an HPFP on the FSI engine.

The fuel rail operates at 110 bar (1600 PSI). The only way to get there is an HPFP. The HPFP on the FSI 3.6 (and the smaller 4 cylinder FSI motors too) is mounted to the block and driven by the crankshaft. See page 36-38 in the attached SSP.

Now - what he describes doesn't sound like the HPFP. I would check things in this order:

  • Coil packs
  • LP Fuel Pump / Fuel Filter (tank mounted)
  • Injectors
GL!
Ok, I just never heard of one blowing up like the diesels.
 

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Discussion Starter · #12 ·
Yea exact part he pointed out! ****!!!!! Said coil packs r good n lp pump/filter as well . Estimate 950$ Hpfp , cam follower, pressure sensor , oil change . Looked it up parts alone r 600$ . I guess it's a bitch to take it off bck of the block .sum shops will take the engine out . Dealer charges 1300-1500$
 

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09 Touareg HPFP replacement time and difficulty

Hi, can someone tell me the difficulty and time involved in replacing the hpfp in my 09 Touareg with a 3.6 liter please. I've been working on cars, trucks, and industrial equipment all my 64 years so I'm not a novice. thanks in advance
 

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Pops - there are two of them on your 09. They are located in the tank (access under the rear seats). It seems like it is just about impossible to diagnose which one is bad when one goes bad - so it's likely easier to replace both. That said, the FP on the FSI motor is pretty bulletproof - my question to you would be "Are you certain it's a fuel pump that is bad?" What is the vehicle doing that leads you to believe its the FP? There are a lot of other things that usually go wrong before the FP does - bad coil pack, bad spark plug, fouled fuel injector, or even just a plugged fuel filter (which, ironically is wrapped around the fuel pump).
 

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Thanks for replying ameoba. I took it to a shop and they told me it was showing 3 codes, P2293, P0087, and P2294. They told me that it needed the hpfp, a fuel line and sensor with the total cost of about $1275 all done. I just bought the car about a month ago it's an 09, 70k miles, ran great. I took it out one day last week and went on about a 30 mile drive. Stopped the car, ate dinner, came out, started the car no problem and drove off the lot. The car started bucking and hesitating, engine light cam on, and ran like crap for a few minutes. I stopped the car, shut it off, waited a few minutes, restarted an got on the hiway and headed home with no issues. Put the car away, the next day I took it out, ran fine, no engine light. I made an appointment with a shop to get it checked out and that's when they told me their diagnosis. I didn't have them do anything and took it home, drove it yesterday and it's still acting up. Like to hear your thoughts on that.
 

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That sure sounds a lot like a bad coil pack or coil packs, not a fuel pump. But those codes are all fuel system related, not ignition.

Do you have access to a VAG-COM / VCDS and not a generic code reader (those are generic OBD II codes)? I'd get a full scan done, reset all the fault codes, and then see what comes back if it's intermittent. Post your location so people know where you are too.

18726/P2294/008852 - Ross-Tech Wiki
18725/P2293/008851 - Ross-Tech Wiki
 

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I'm from the Metro Boston area. I do not have access to any of that. I agree, but as you said the codes are fuel related. I would assume if I had a failing fuel pump, it would just leave me on the side of the road somewhere. Being an intermittent problem I would lean towards a spark related issue like a coil pack, as you suggested. I wouldn't mind if I owned this car for awhile but I just bought it and paid all the money for it because it was a one owner, always garaged and in super clean condition. Just s!!t luck I guess.
 

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Pops, this is the thing with buying a used car. No matter how great condition it's in, there will always be something to creep up on you. When I bought my 09 T2 with a V6, it looked great and the interior looked like anyone hardly sat in it, even the driver's seat. So as soon as I got it I took it to my mechanic friend who is an expert in European cars. He went through it top to bottom and gave me the list: A/C compressor, some vacuum part in the engine, practically all suspension bushings and ball-joints and rear control arms, driveshaft center bearing, differential mount bushing, and a new set of tires. I may have forgotten something, but you get the idea. All that and he tells me that the car is in great shape and that all of this is just normal maintenance. Cost me almost the equivalent of US$ 2000. And I haven't taken a look at the spark plugs or coils yet. But apart from that whine or more like kind of a whistling sound when starting cold in the morning, the engine runs pretty strong and smooth.

Next on my list is to replace the "new" engine mounts which the previous owner installed. Apparently he went the cheap route and had solid mounts installed instead of hydraulic. I didn't even know you could get solid mounts for these cars.
 
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