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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 10-24-2010, 11:00 AM   #1
blackybmw
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my 2001 330xi turns over but wont start

my sons 2001 330xi was running fine other than a whistle under acceleration, he stopped at taco bell to eat came out now wont start, what should i look for is it the fuel pump and if it is where is it located he is 60 miles away and im going to have to work on it there. help me! thanks
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Old 10-24-2010, 11:37 AM   #2
Kubica
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Fuel pump is in the fuel tank, which is accessible under the rear seat.

http://www.pelicanparts.com/bmw/tech...-Fuel-Pump.htm

Hopefully it's not the starter, which is a tough DIY on an xi. If you don't think it's fuel related- try pop starting it.
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Old 10-24-2010, 11:42 AM   #3
TiAgXi
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Dead batter is normally the culprit for this kind of thread. Not always but many times. If the car's battery is the original, it's lived a nice long life for a battery and needs to be replaced.
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Old 10-24-2010, 11:59 AM   #4
blackybmw
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has new battery only 4 months old, is there any way to see if fuel pump is working, thanks for the thread very helpful, glad to see dont have to crawl under car.
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Old 10-24-2010, 12:07 PM   #5
TiAgXi
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When you turn your key to position two (one stop before starting the car) you can hear the fuel pump prime itself. If you can't hear it prime, the fuel pump may be shot.

Is this a california car, by any chance? If so, it's a Super Ultra Low Emissions Vehicle (SULEV) and the fuel pump is different than in other cars. I believe the fuel pump on a SULEV car is inside the gas tank and is a PITA to replace.

Last edited by TiAgXi; 10-24-2010 at 12:09 PM.
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Old 10-24-2010, 03:00 PM   #6
Kubica
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Quote:
Originally Posted by TiAgXi View Post
When you turn your key to position two (one stop before starting the car) you can hear the fuel pump prime itself. If you can't hear it prime, the fuel pump may be shot.

Is this a california car, by any chance? If so, it's a Super Ultra Low Emissions Vehicle (SULEV) and the fuel pump is different than in other cars. I believe the fuel pump on a SULEV car is inside the gas tank and is a PITA to replace.
330's aren't SULEV's. Only 325's. Also I don't think they made xi's with SULVEV, but I may be mixing that up with auto tranny's.

If the battery light came on at all while the car was running previously, it's most likely the alternator.
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Old 10-24-2010, 03:21 PM   #7
one thumb juan
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Quote:
Originally Posted by TiAgXi View Post
When you turn your key to position two (one stop before starting the car) you can hear the fuel pump prime itself. If you can't hear it prime, the fuel pump may be shot.

Is this a california car, by any chance? If so, it's a Super Ultra Low Emissions Vehicle (SULEV) and the fuel pump is different than in other cars. I believe the fuel pump on a SULEV car is inside the gas tank and is a PITA to replace.
+1
Your son can do this test before you get there. Get in close the doors and listen for the pump under the back seat.
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Old 10-24-2010, 10:03 PM   #8
blackybmw
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no noise but pump still works when hooked up to battery now what?
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Old 10-24-2010, 10:24 PM   #9
TX_Bullet
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well 2 things make a car run fuel and igntition. Check for fuel at the valve on the fuel rail after that pull a igntition coil stick a screws driver in there and try to start it if you got a spark to the block your good.
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Old 10-25-2010, 12:05 AM   #10
blackybmw
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how about spraying starting fluid in intake to see if fuel or ignition
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Old 10-25-2010, 10:14 AM   #11
TiAgXi
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how about spraying starting fluid in intake to see if fuel or ignition
Your MAF is not going to like that at all. Plan on replacing it after you attempt to start the car with starting fluid.
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Old 10-25-2010, 04:15 PM   #12
one thumb juan
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no noise but pump still works when hooked up to battery now what?
I assume you mean it does make noise when hooked to a battery. Follow the path of electricity. Check for power at the fuel pump relay socket.
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Old 10-25-2010, 08:58 PM   #13
TX_Bullet
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yea steer away from starter fluid with that previous maf.
Like the other member said check for power at pump connection.
By the way you can pull that maf off spray that starter fluid in the boot slap it together and crank it
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Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
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Old 10-25-2010, 09:10 PM   #14
one thumb juan
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I'll also add that i have never ever ever seen a BMW start up using anything sprayed into the intake. Not one made after 85' at least.
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Old 10-25-2010, 10:32 PM   #15
TX_Bullet
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It was worth a shot. If you hearing the pump connected direct to battery but not when normally connected you need to check fuses and relays
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Quote:
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Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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