Ok so my first car i bought about a month ago (guy said engine replaced at 120,000 car now has (234,000) i noticed a week later it was like going dead slowly overnight from 14 volts to 10 volts. now its just GOING dead.. every mornin got to jump it. (btw starting issue with apbendix)-u just crank a few times it eventualy catches the fly wheel... however i have a 500 watt kicker in the back installed by previous owner. i did my own test by disonecting the amp from battery and sure enough still dead i mean like it wont power the power locks dead lol so its not he amp... so i need help i really would like some one who knows were the engines ground is to tell me or show me with some sort of picture. even the ground part number would be useful cause its a wire nest under the car i couldnt find it. i belive when they reinstalled the engine (if they did lol) i belive they would have left the engine ground off disregarding it thinking its useless. seeing im missing (the engine cover, plastic intake pipe,back to a head light-not to noticable,and my headlight washer pump stuff...previous owner thought it was a race car all he did was screw up a luxury car....I Apriciate any help thanks=)

 

There are an awful lot of grounds on that car. And it's not necessarily a bad ground. Google "parasitic draw" and you'll see a lot of advice on how to track it down.

 

thanks man i appriciate it alot =) any other ideas on whats drawing power? cause when we connect the jumpers theres sparkage so dosnt that means power is being drawn also the idle on the car while running like moves around from 500-900 rpms ... and if the ac is on and u press the gas whenn u let go the engine goes to like 400 rpms and almost stalls....=/?

 

I have about 50 ideas, but you'll never get there throwing s--t against the wall. You need to isolate the circuit that's drawing all that power. Then find what's going on with that circuit. Google parasitic draw, you'll see what I'm talking about.

 

It could just be a bad battery, unless you know it's new. If it were me, I would take the battery to a local auto parts retailer and ask them to do a load test on it. If the battery comes back as healthy, I would then check the alternator output to make sure it's charging properly. If both the battery and the alternator check out okay, then start looking for unusual draws.

 

its not the battery. or the altenator . the altenator charges the battery works for hours with the car off thanks tho=)

 

50? shootttttt lol i need anything and i googled what u said veryyy helpful but i dont know how to use amp meters or how to do the check could u give me a detailed explaination thanks... and were are the fuses in my audi a4 0_0 is it under that black box in front of my fire wall or some were else?

 

Fuses are in the end of the dash on the driver's side. Just pry off the cover. There are also some others behind the knee bolster under the steering wheel.

I had you Google it because a lot of people have typed better directions than I could type. Same with using a multi-meter. Lots of advice out there, so I don't have to type it all out.

I will tell you this. If you disconnect the negative cable on your battery, then put a multi-meter between that and the neg post on your battery. Set up the mulit-meter to read 10 amps. Then close all the doors, remove the key. After 3 minutes the after-run coolant pump should shut off and the amp draw should be about .04. If it doesn't drop to about that, you're drawing too much current. Then you just have to narrow it down to the ciruit that's drawing all the current.

 

ok thanks man =)

 

ok so besides the fuses and parasitic draw were is the MAIN engine ground like block to frame? part number anything helps