What a PAIN in my AUDI! (No-Start, Dead Battery, no Fuel Pressure?)
HTML-код
- Опубликовано: 3 май 2022
- Here we go again...another dead Euro on the road.
This 2009 Audi Q7 V8 has been acting up...losing power and stalling out. Finally it quit completely and the owner had it towed to his house.
A few other shops took a "stab" at it...literally.
When I get there the battery is at 3.8V...completely spanked. This one is going to be fun!
IVAN'S PICO WAVEFORMS:
drive.google.com/drive/folder...
THINK TOOL PROS:
www.amazon.com/dp/B08XXWHQVJ?...
ASTRO DC AMP CLAMP:
www.amazon.com/dp/B08MTCMWLB?...
Enjoy!
Ivan
Advice; if you ever come out to work on Audi/VW/Porsche, you should being a set of triple square sockets. Used all over the car.
I'd rather have a pain in my innie than a pain in my audi any day! :-)
Watching this makes me want to walk everywhere! Battery under the seat? OMG
Another great diagnosis, Ivan. However, what a fantastic design when one has to remove the front seat to change/check the battery.
On my 2005 Audi A6 3.2L I had a no start. I applied power directly to pump leads, and pump did not run. Replaced fuel pump and it ran fine for 3 weeks. Then no start again. I apply power direct to pump, and pump worked. Then began hunt for the fuel pump control module. Different manuals suggested different locations. Turns out it was located directly above fuel tank lock ring jammy, off to the side, under seat sheet metal. Manual suggested lifting car, unbolting exhaust, lowering tank... That aint happenin. I used a tire spoon and messaged sheet metal up, knock out plastic bracket, and swapped in a new-used module. I retained it with a bolt and nut. Massaged metal back into shape. Ran perfect for 2 more years (then timing chain issue). I love Audis but they are not friendly to work on. Not at all. But I love them. :/ I thought a failing pump may have weakened the module? My new pump was OEM Valeo.
Superb roadside diagnosis. Those triple square heads are all over most Audi's, I had to buy a set for one little job and never used them since. I feel for the owner, that German tank will declare war on his bank account 😁
I thought Chrysler's idea of putting battery in the front fender well was stupid, but this Audi idea is moronic. SMH. Great video !
Outstanding video again Ivan! I love your work and I feel like i learn something new with every video you put out.
Another great diagnostic video by PHAD. Thank you Ivan
The battery location is pretty bad. The first thing that I would change the first time the battery was replaced , would be those seat bolts with conventional hex heads.
Your analysis is spot on I've seen a bad fuel pump blowing 10 amp fuse every once in a while for no reason except for worn brush contacts. Arcing/amp spikes is the killer of the digital pump driver
Thanks for the follow up Ivan. Great case study as always. Thanks for sharing!
Your patience is just amazing Ivan👍..I totally enjoy watching your diagnostic approach to car fault analysis..I even bought a cheap scanner to investigate my early model Hyundai i30 diesel recent Check Engine light …DTC report, powers and grounds , visual inspection .cool as 👍😎
Ivan, I have to give you credit for even looking at fixing these foreign cars, they are a nightmare getting at critical parts, like a battery. Great videos, thanks.
What audi really needed was a module that would protect their module.
With all of that computerization, all of the tests, all of the modules, the car still didn't know it had a pooched fuel module, and a fuel pump drawing too much current.
What an odd problem! Fun and educational to watch, with all the German quirks getting in between. Your videos never disappoint :-)
Ivan, you're the best! Nice work!
IVAN, AWESOME diagnoses and approach really appreciate the time and effort you put in ur videos million thanks brother. cheeeeeers
I have two older vehicles that use those electric inside the fuel tank fuel pumps. One vehicle, a GMC, is on its 4th fuel pump. The other vehicle is on its second one. We used an airtex brand in one repair in 2009 and that part lasted the least. Replaced the airtex with a GM part, it lasted a few years then quit in 2012 as it was weak pressures. Replace that one with a Delphi 5 years ago and it still working. The other car, a 2001 Lincoln LS8 lost its OEM pump 4 years ago. Replaced it with a Delphi brand and its still working. In both cases, we replaced only the pump itself as they were available separately which saved us hundreds of dollars in not buying the entire fuel module assembly.