I own a 2003 Audi A4 Quattro 3.0 v6 I'm struggling with trying to figure out why it won't start. Everything turns on just bought a brand new battery and a couple days later it just quit starting. I'm not very auto smart when it comes to audi. Does anyone have any pointer they can give me on what I might do to be able to figure out the problem. I just bought a fuel pump waiting for it to arrive just incase that was the problem but can anyone give me ideas other than the fuel pump that might help me resolve this issue thank guys appreciate it.

 

I too had the same problem with a 2006 A4 Quatro. I replaced the coil connector packs. Also a new battery and checked all fuses in the engine and door panel and under dash. No luck
Finally took it to a trusted Audi mechanic it turned out to be a faulty relay and a blown generic fuse that protects the ECM. Hope this helps. My A4 is up and running.

 

Hi guys,

I've also got a no start issue with my Audi A4 estate auto 1.8T petrol (2004) :/

Took it to 4 local garages - none of which could figure it out! First of all the computer had a few faults - coolant sensor, battery and thermostat.
First garage fitted a new coolant sensor which didn't do anything. They sent me to a local electrical specialist who suggested I replace the thermostat and battery which I agreed to but that didn't fix the issue either! They reckon it was a fuel related issue and suggested I change the fuel pump filter and work back from there but said they didn't think it was the fuel pump itself as u could hear it prime. There was a way to start it - if you turn the key immediately it would start almost first time everytime but if you waited more than 4/5 seconds then it loses pressure and won't start.
When I drove it off the car was juddering (limp) but sorted itself out. I took it to another garage and had the fuel pump filter changed which solved the starting issue but the occasional juddering was randomly still happening but seemed to be driving OK for most part. Few days later the non start issue came back and when I did get it started it was just limp and literally had no power. Broke down a couple of times and even the AA breakdown couldn't figure it out. After starting it over and over for about 15 x it finally came up with a fault code - Crankshaft sensor.
So had that replaced but the garage fitted the cheapest shittiest crank sensor money can but and it literally did nothing. Finally found a garage that can test fuel pressure and they're data scanner showed no boost so they suspected it was a faulty turbo but couldn't confirm for sure as they didn't physically check it.
Can anyone shed any light?
I've been told that if and when you change the crankshaft sensor u should also change the camshaft sensor at the same time so I've ordered a bosch cam sensor and a ERA crank sensor (euro car parts don't have bosch ones) so hoping that helps with the starting issue then my mate can check if its the turbo.
Read about this common fault and people saying that even after changing the fuel pump it didn't solve the issue so reluctant to get a new fuel pump incase that doesn't work.
Just wanna sell the damn thing...
Any advice or suggestions would be much appreciated.
Sorry for the long winded post!

Big thanks in advance,
M

 

Oh, thank you for the information, that was very helpful.

 

I think You can also try using Sodium Hypo Chlorite based products, they are particularly useful for solvent emulsion cleaner, easily dissolves soiled oil and grease deposit in automotive parts. it works for my machine.

 

Hello, I encountered a similar issue with my Mercedes Sprinter. After reading an article on car hacks online, I decided to perform a diagnostic check, and it revealed a malfunction in the fuel pump.

In my quest to troubleshoot the problem, I stumbled upon a web article https://ipsnews.net/business/2023/12...t-ecu-problem/ discussing car-related hacks. Intrigued by the information, I promptly initiated a diagnostic test on my Mercedes Sprinter and identified an issue with the fuel pump.

This discovery prompted me to delve deeper into potential solutions and explore ways to address the fuel pump problem efficiently. I'm grateful for the valuable insights gained from the online resources, as it empowered me to proactively tackle the issue and ensure the optimal performance of my vehicle.

If you're facing similar challenges with your car, it's worth exploring reliable sources for troubleshooting tips and hacks that might lead to a swift and cost-effective resolution.

 

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I'm glad to hear you were able to diagnose the fuel pump issue in your Mercedes Sprinter using online resources and car hacks! It's always rewarding to take initiative and solve car problems yourself, especially when it saves time and money.

Your experience highlights the importance of readily available information and the potential of car hacks to empower individuals with basic troubleshooting skills. While not every hack may be universally applicable, exploring reliable sources and forums can equip you with valuable knowledge and different perspectives.

However, it's crucial to exercise caution when relying solely on online information. Here are some additional tips for responsible car troubleshooting:

• Verify the source: Ensure the information you find comes from reputable websites, forums, or repair manuals known for accuracy and trustworthy content.
• Double-check your diagnosis: While DIY diagnostics can be helpful, complex issues might require professional expertise. If you're unsure about the problem or the solution, consulting a qualified mechanic is always advisable.
• Prioritize safety: Always prioritize safety when working on your car. Follow proper procedures, use the right tools, and disconnect the battery before working on electrical components.
• Know your limits: If a repair seems too complex or beyond your skillset, don't hesitate to seek professional help. Attempting advanced repairs without proper knowledge or experience can lead to further complications and safety risks.

By combining online resources with a healthy dose of caution and practical sense, you can become more confident in handling minor car troubles and keeping your vehicle in good shape. Remember, responsible DIY car care can be empowering and cost-effective, but prioritizing safety and knowing your limits is paramount.

 

it is really helpful thanks