2002oldsmobile Alero will not start .Turns over will not start.After being dropped at repair shop it started several times. Kept overnight Would not start That afternoon it started several times

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How to start this 2001 Oldsmobile Alero - YouTube

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Feb 15, 2013 - Uploaded by carexpertandy
How to start this 2001 Oldsmobile Alero ... to let me know my car still on if i dnt make the payment they turn the car off at the lot and it wont start.

No Start Due to Failed Passlock Sensor : Oldsmobile Alero ...

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Oldsmobile Alero No Start Due to Failed Passlock Sensor. This is a ... 2001 Oldsmobile Alero117,000Visitor .... 2004 olds alero wont start in park does in neutral.

2001 Oldsmobile Alero wont start? ' Yahoo Answers

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Mar 15, 2011 - Alright guys, Last night I drove my Alero all over town with several friends. I wake up for work today, it wont crank! It has no recognition for the ... My 2001 Oldsmobile alero will not start. It will crank and has ...
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2001 Oldsmobile Alero Won't Start - How To Fix It ' M

You need to disconnect the battery negative lead and place an ammeter between battery and lead, note the current draw with every thing switched off, then start removing one fuse at a time from fuse box and see if ammeter drops significantly if not refit fuse and remove the next one and repeat this until you find the one that causes a significant drop, then you will have found the circuit that is draining the battery, you need to check this circuit to find cause of power draw and repair as required, let me know how you get on

The most likely causes on the Alero are either a clogged fuel filter (which should be replaced every 30,000 miles in order to avoid damage to the fuel pump), or a weak or bad fuel pump. I'd start with replacing the fuel pump since it's the cheapest fix, the part costs about $20 at the Auto Parts Store. Here's a link to the fuel filter location and replacement:

http://wiki.answers.com/Q/Where_is_the_fuel_filter_located_and_how_do_you_replace_it_on_a_2001_Oldsmobile_Alero

The fuel pump replacement is more work and more money. The part costs between $100 and $150 to buy nif your a DIY, or about $650 for parts & labor at a repair shop. The fuel pump is located inside the gas tank, so the gas tank will need to be dropped if the pump is to be replaced.

the issue you are having has to do with the ignition switch harness, it is inferior in this vehicle, the best way to I have found to repair these electrical and fuel pump issues , is splice in a ignition switch wiring harness from a 98 - 03 grand am ignition switch harness, I have used Malibu parts also but they seem to be only slightly better than alero, I have done several of these aleros without come backs so there ya go ,

I have done this before, put about a 10 amp charger on the battery. Pull the courtesy light fuse first. Look at the battery charger, it is probably charging several amps, pull one fuse at a time. When the charging amps drops down you found the fuse the controls the problem. I had a car several years ago that someone pulled the seat belt all the way out, somehow it was pulling a load and draining the battery overnight.

have a repair shop diagnose it and recommended repairs. they will scan it to get a trouble code and that will steer them to the fix. there are too many variables to guess. you dont want to replace parts that are not needed.

make sure your cap and rotor timing is correct double check spark plug routes (mistakes happen). maybe your timing is off in general.

Sounds like the neutral safety switch is either out of adjustment or is a bit worn out. Try starting in neutral when it does this...If that solves the problem, have the switch checked.

Try replacing the engine relay switch. It is located under the hood with the other relays. If not check the wires for ground. Check the battery cables , especially the cable that goes to the positive of the starter.