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Discussion Starter #1
Been scouring the pages but couldn't find an answer to my problem.
I have an 04 V6 Touareg with 103k miles. I bought it a few weeks ago with mild front end damage. Ran and drove perfect. No CEL. Core support was cracked so I ordered a new one. Pulled the old one out and reassembled the front end. Now it won't stay running. Turn the key and it fires right up then promptly dies. If I flog the gas peddle is will stay running but barely. If I hold the gas peddle down at a steady point it just dies slowly. Here is where it gets annoying. I still have no check engine light. I tried running VCDS and it freezes when it gets to the point of scanning the engine. I have a 1/4 tank of gas. When I had the front end off my wife left the car open and radio on nearly killing the battery but I did put it back on the charger before it was totally dead and battery is currently charged
 

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Discussion Starter #2
I would also like to add I just did a fuel pressure test and it holds steady at 60psi. It drops 2psi on actual startup and then holds steady even with my wife flogging the pedal to keep it running so I'm highly doubting that the fuel pumps are bad.
 

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Discussion Starter #3
Checked with a local shop and my fuel pressure is dead on spec. So it's absolutley not my fuel delivery system. Kept it running for nearly a minute by flogging the pedal but still no codes. Readapted the throttle via VCDS to no avail. I have tried putting more gas in it as well. I'm pretty much keeping my charger on the car since I keep messing with it so battery is not dead or low. Even my local shop owner is stumped.
 

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Checked with a local shop and my fuel pressure is dead on spec. So it's absolutley not my fuel delivery system. Kept it running for nearly a minute by flogging the pedal but still no codes. Readapted the throttle via VCDS to no avail. I have tried putting more gas in it as well. I'm pretty much keeping my charger on the car since I keep messing with it so battery is not dead or low. Even my local shop owner is stumped.
Would still figure fuel with no CEL. Maybe high pressure pump that feeds the injector rail. Filter above drivers pump could be a problem but with 60psi probably OK . Did you check flow from the passenger pump? In 15 seconds should have over 800cc of flow. The passenger pump feeds the rail after 30 seconds. Drivers pump just primes and feeds the rail for 30 seconds. Also transfers fuel to passenger side of tank as needed.
 

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Discussion Starter #6
That is something I'm gonna try today. Bought a new battery today as well. Going to drop it in the rig a bit later. Not a job I'm thrilled with. Battery wasn't holding an optimal charge anymore so decided it should be replaced anyways.
 

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Discussion Starter #7
Little update. Car is fixed and running like a champ. I dropped a new battery in it. Old one wouldn't hold hardly any charge. Car started but died right away still. This time however I was able to connect to the Ecm via VCDS. This was a win in itself. Only code that came back was the VSS. Next on my list was to clean the MAF. While I was taking it off I discovered the intake tube was not connected to the engine correctly allowing air to get in bypassing the MAF. Put it back together and BOOM it runs perfect. Purrs like kitten and drives even better.
 
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