Question about 2001 Ford Mustang GT

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How is 2001 Mustang GT parasitic draw on battery related somehow to FU 27 and FU39? Battery drains overnight but I cannot narrow down a faulty component.

Battery draw draining battery overnight.

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  • Ford Master
  • 5,692 Answers

Allfordmustangs.com has an article if you Web search your car with fuse 27 and 32 as part of the search. It blames the GEM as part of the problem(wiper) and also points out that the radio has several power feeds. Fuse 27 is hot all the time, but fuse 32 is only hot in ACC or Run. So as long as you can test fuse 32 to be hot in only Acc or Run, it should not drain the battery in Off position. You might want to test the ignition switch to verify it is really turned off.

The all mustangs article had different symptoms, as you did not indicate whether the fuses popped.

The wiper motor is suppose to derail and turn off. If you can unplug the wiper motor overnight and the battery stays up, you would know that it is either the wiper motor or wiper control. The radio is on the other fuse circuit. But whether the radio can drain a battery in a short time, you need to measure draw, but if the fuse pops, the battery should stay up. Again, disconnecting a circuit like a radio, and then having the battery stay up, would point to the radio circuit being at fault.

Posted on Oct 14, 2014

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Anonymous

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Posted on Jan 02, 2017

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Mike258

Justin Case

  • 1498 Answers

SOURCE: something is draining my battery

Hi there,

This response contains troubleshooting procedures designed to locate the cause of an overnight power drain resulting in a dead battery, It assumes the charging system is working.

The first (and easiest) test I run is on the battery.

When you are done using it for the evening, pull the Negative battery cable.

In the morning, re-connect it. If it's dead again, the battery need replacement. This does not necessarily mean you found the problem.

If it starts, the battery is ok. It's time to look for the power drain.

With the ignition off, ensure the systems that should be off actually are off. For example: does the radio still come on? Wipers? Etc.?

In the same vein, has anything new been installed lately?

The next test is a lot more tedious. You will need a test light, needle nose pliers (to pull fuses) and the proper tools to remove the negative battery terminal (again).

  • Ignition off
  • Remove the cable from the Negative battery terminal
  • Hook one end of your test light to the Negative battery post
  • Attach the other end to the cable you just removed
  • Again, double check connections to recent installations (radio, GPS, etc)
  • If it lights up very faintly, this is likely the normal drain of the clock. The brighter the light, the bigger the drain.
  • Find your fuse box
  • While keeping an eye on the test light, pull the fuses one by one. Replace the one just pulled before going to the next.
  • When the light goes out (or dims), you will have narrowed the the problem to a specific system. Check the legend on the fuse box for the offending fuse.
At this point there are too many 'What if's'. Which system has the drain will determine the next steps to be taken.

This procedure will allow you to focus in on the problem area. Let me know what you find out.

Hope this helps

Mike

If you found this helpful, please take a sec and rate this response. Thanks.

Posted on Jul 24, 2008

wolfman21955

  • 97 Answers

SOURCE: battery draining down when parked but no lights on

the central timer module is located in the back of the main central fuse box. This module contains the time contol elements for the heated rear window, interior lights and intermittent wiper operation, the module also activates a warning buzzer when the lights are left on

Posted on May 14, 2009

gordanddar

gord storey

  • 477 Answers

SOURCE: 2003 Ford Mustang GT Battery Light

Your alternator should power everything when engine is running. Battery is only for start up. Test voltage with a multimeter when engine is running , should be 14V or more . Any less indicates low alternator output.

Posted on Jun 03, 2009

B1gJ03

  • 77 Answers

SOURCE: How do I drain coolant from a 2001 ford mustang

unscrew the freezeplug located on the bottom corner of the radiator

Posted on Aug 17, 2010

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jturcotte

Jeffrey Turcotte

  • 8984 Answers

SOURCE: ford F150 2002 drains battery overnight, new

Please see my tip at http://www.fixya.com/cars/r5925550-dead_battery_troubleshooting . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Posted on Oct 03, 2010

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