2006 s4 won't start please help

[Bayboss23]

Hey guys this morning I went to start my car it turned over perfectly fine I went inside to grab my stuff and came outside and my car was off headlights were still on and so were the interior lights I tried to turn it back on but would not turn on it would just click when I get home from work I'm gonna take the battery to get tested this is the first time it's done this sometimes when I do turn it on it seems as if it wants to low idle then goes up. Can you guys please lead me in the ryt direction of what to do thanks in advance

[2004B6S4]

if it just clicks, that sounds like your starter. usually if that's what it is, you can just keep trying and eventually it will turn over

[Bayboss23]

I left the car on when I went inside and it turned off while i was inside

[nogaroblu]

clicking and no start could be the starter, but for the car to just shut off by itself?

was it clicking for a couple seconds? or just one click?

[brndll]

Cars need fuel, spark and air. If its not out of gas, then you need to start troubleshooting and the battery is a good place to start. These cars (as do most modern cars) need a strong battery to run properly. It sounds like you already know to get that checked quickly. Beyond the battery, it would be a good idea to pull the codes. If you don't know how to do that, most auto parts stores can get you a quick OBD2 scan which might give you some start points. Don't trust them implicitely though.

[Bayboss23]

The clicking noise was from me trying to to turn the car on it was the starter trying to turn over

[brndll]

Starter issues on these cars definitely crop up. I am on my second one at 120K. First one went at 85K and there are lots of mentions here on the symptoms. Click and no start, but keep trying or come back to it in 5 minutes and it starts right up... that is almost always the starter.

[nogaroblu]

from my experience, one click = starter
if it clicks a couple seconds = battery

[brndll]

I am in total agreement with this.

[Bayboss23]

Where should the click be coming from ? So I know what to listen for

[Bayboss23]

Went to audizone and they said it was a bad battery I wanted to buy optima red top but the guy try to say it wasn't compatible I opted for duralast gold but would rather have the optima can anyone tel me what sz buy or what not thank everyone for the help

[Bayboss23]

I installed battery and car still won't start does that mean it's the starter ?

[jakeoboy67]

I installed battery and car still won't start does that mean it's the starter ?

check the new battery voltage first

[Bayboss23]

The cold cranking amps are 900 I'm gonna try to look for a way to see if it is my fuel pump

[VinnysS4]

If the car starts and then dies, it could be a bad alternator. Once your car is running, it uses the alternator to run everything. If the alternator isn't charging the battery back up, you will end up with a dead/bad battery, and a vehicle that will not stay running . If the car cannot be jump started and the car continues to click. ..it could be either your starter or the alternator/battery cables. Check resting voltage and cranking voltage. How many times does it click when you try to start it? Does it try to turn over at all?

[drinkbrew]

If it started fine but died, I would suspect the alternator belt might have slipped off or broke. On the same thought when my battery died it wouldn't start or click at all, the car wouldn't even try to start if the voltage was low. If you can jump start it and it dies again then that would be the alternator. If you can jump start it and it runs but then quits, that's usually an alternator. I'm not sure with Audi, but every other vehicle I have owned you can test the alternator by jump starting it and once it is running remove the negative battery clamp. If it dies right away then you alternator is shot.

[Bayboss23]

When I try to turn the car on it sounds normal the starter is working the car just doesn't turn on I will try to jump start it

[arrogntbastrd06]

Assuming your battery is still powering your interior lights, headlights, starter, etc... i'm going to guess that you have either a spark or fuel issue.

Maybe blockage in fuel line, dead pump, no fuel (that would be hilarious fyi)

I can't imagine all eight coils and/or spark plugs dying/fouling simultaneously. Maybe the alternator isn't outputting enough to generate a spark??

Crazy bro, hope you figure it out :-)

[Bayboss23]

Lol my tank is about 3/4 full I just checked the alternator belt it is still in good condition gonna go buy a fuel pressure gauge to test fuel pressure if that's not the problem I'm gonna start pulling spark plugs

[Bayboss23]

So I went to get a fuel pressure gauge from autozone I realized the fittings don't fit 🙈 I loosened the fuel line and turned the key to where all functions were on no gas was coming out then I took the hose off completely tried again nothing came up im gonna change the fuel filter is it safe to say my fuel pump is toast or could it just be the fuel filter

[924Carrera]

Have you checked the pump fuse and relay?

[Bayboss23]

Yes pump relay and fuse was good I picked up the feel pump he also told me it was fuel pump gonna change it out tomorow and let you guys know the results thanks again for everyone's input I'm also changing the fuel filter

[Bayboss23]

Was able to replace fuel pump today and sure enough old one was toast car fired ryt up with the new one thanks for everyone's help

[Bayboss23]

After I changed my fuel pump it seems as if I have air in my tank anyone know how I can take it out I tried to fill up my tank and it only filled up to 3/4

[Bayboss23]

I disconnected the lines that went to my canister hoping that the air would be in lines I could not hear any pressurized air coming out when lines were disconnected and my fuel light is still on please help

[Bayboss23]

I fixed the fuel light problem I again took out the fuel pump and looked at the float it appeared to be in condition and working I re seated the pump made sure the gasket was seated correctly I think my problem was that I did not seat the gasket ryt now my fuel light is off 🙏🏼 thanks everyone for there input

[Concavitor]

100% absolutely without a doubt a dead battery.

[arrogntbastrd06]

100% absolutely without a doubt a dead battery.

^^ ??

Please tell me you're being sarcastic. haha