2003 bmw 330i will not start

SOURCE: BMW 740i Stalling Issue (Fuel Pump/Line??)

the problem is your sensor is bad . the sensor for for the fuel pump is not sending power.

SOURCE: Battery going dead 2001 BMW 330i

Whenever a car has this type of a problem, it is normally because of poor connections, belt slippage *severe*, or - very possibly, something is putting an excessive drain on the battery when it is not running.

My experiences have been to first check that ALL the connections are totally clean - especially check your battery posts and make sure they are tight with very good - surface-to-surface contact. Remove BOTH connectors on the posts and clean with battery post cleaning tool *wire brush* and then use the spray that stops / limits corrosion.

Are you sure that battery IS OK? Take it in for a load test - old batteries often deteriorate over time *sealed or not* and it just might be time for a new one. Get the biggest 1 that will fit in where it is held. More amperage *rating* is always better.

Poor connections often happen during cold weather season *expansion and contraction cause this*.

BAck to connections again - VISUALLY inspect ALL your cables/wires for discoloration. Connections need to be tight - end-to-end in the charging system. I am not sure if the car has a starting relay or not - and if so - where it IS located. THAT TOO is a problematic area due to poor connections that quite often, just may need to be cleaned.

Are you sure your alternator IS good --- are it's belt nice and tight- but not too tight? Speaking of the belt ... look on the inside track of the belt - has it been replaced recently or is the rubber in poor shape *splits, showing sign of extreme heat from slipping etc*. When you have a load test - that test alone will indicate whether it IS charging even if everything is running like A/C, radio, light, wipers. Check you gauge inside the car - IF it has one - and no matter what RPM ~ it should still be charging *showing positive charging - NOT discharging*. Lastly - the alternator OUTPUT -- is it the right one for that car - correct rating???

There are even more areas worthwhile checking ... but unless you have the correct tools and diagnostic equipment - it can be tough to nail-down the right specific problem. A lot of places *like Sears* will have that - and used to not charge for the diagnostic - because they wanted to sell you THEIR battery.

One more thing .... most cars will have some minor drain due to clocks running, alarm working and so on. HOWEVER - if a light *like an interior or truck light* remains on, that will give you a larger drain.

A battery should never go dead while driving - and your light *running lights* should always be bright .. are yours??????

Hope this helps!

SOURCE: BMW 325xi; 160k; check engine light on-->next day, wont start!

The check engine light is a warning to let you know something needs your attention to be repaired I would try getting a jump. Could be a bad battery. Lets get the battery charged and tested. Cold weather will stop your car from starting if you have a weak battery. You dont need to tow the car just take the battery to Autozone or Walmart to be charged and tested for cca...cold cranking amps

SOURCE: i just bought a 2001 bmw 325ci the car had a rough

Welcome to the world of BMW's. return the car to the seller. you got a bad one. You got an electrical short draining the battery. Bring a blank check and sign it over to the dealer. They're going to have to run through the entire electrical system to find the short. That work alone is worth more than the a used up 2001 325i.

SOURCE: I was driving to work on my 2003 BMW 525I. As soon

i own a bmw 381 series and i drove the car from the office to the mall when iwas ready to leave the car just tumbles but will not start.......felt like when u dont have any gas.