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andreajeanpaul Posted on Jan 20, 2018
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2001 vw passat won't start after replacing battery

Car has been running great. Came out from work and it wouldn't start. Appears light may have been left on. Tried to jump and it cranks but won't turn over. Took out battery and it tested bad. Replaced with new one and it cranks but will not start. Any thoughts on what could be wrong?

1 Answer

Bill Boyd

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  • Cars & Trucks Master 53,816 Answers
  • Posted on Jan 20, 2018
Bill Boyd
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Joined: Jan 04, 2013
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Use a scan too, to reset the ECM

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on May 20, 2009

SOURCE: 2002 Kia Sedona new battery & alternator car dies while driving

hey buddy the same that happeanto me, its your alternator dont make any one give you the run a around alternator for sure. i got my alternator from gb500 it cost about $160.00 after tax.

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Anonymous

  • 1 Answer
  • Posted on Jun 18, 2009

SOURCE: 1989 vw jetta wont crank. replaced battery still wont start.

Ive got a Jetta 2 CSI and had the same trouble. I then discovered that my coldstart packed up, wich you cant even get at the agents anymore. So If you are in the Benoni area I can fix it for you for 'n reasonable price, and you won't have that trouble any longer. Mine is still starting by just touching the key. 0829484343

alicantecoli

Colin Stickland

  • 22516 Answers
  • Posted on Aug 14, 2009

SOURCE: 2001 VW Passat Intermittent immobiliser problems

dealer only ,might get away with a re programme of the chipped key ,worst case scenario is a new ECU

Sean80000

Sean Piquet

  • 1867 Answers
  • Posted on Nov 30, 2009

SOURCE: 87 f250 drained brand new battery

I would first have the alternator checked by an auto electrician to ensure it is working correctly and is providing the correct volume of current. It may be faulty and when driving you will be drawing battery power instead of power from the alternator to run the electrics. This will drain the battery.

Alternators do not last forever and if you are still running the original unit it is likely to be on it's last legs and you will need a replacement unit.

pc302001

Barry N Melissa Spring

  • 230 Answers
  • Posted on Apr 01, 2010

SOURCE: turn the key on my car a 2001 vw passat engine

Check in the black power box under the hood. Pull cover off and there is a diagram explaining what is what. Check the ignition fuse and fuel pump relay.

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did they run a test on the alternator!! at battery when off should be at least 12.6 volts, less than 12 volts battery is bad. when running at battery voltage should be at least 14.1 to 14.7, thats if alternator is ok. if less than above replace alternator. if alt. is ok, could be a bad battery.
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Hi

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Regards

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