Question about 2006 Kia Rio

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Parasitic key off battery drain, how to fix My battery is draining when the car is off, approx a .10 drain, what might it be? Have checked alternator and have new battery both are fine.....

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Keep the ammeter in series with the battery with everything off. take out each fuse in turn and note any change to the the residual current drain. The fuse that when pulled out results in a drop in the current drain will identify the guilty circuit. Interior glove box and trunk lights are classics for staying on when they should be off, often the contact brackets get bent and so not longer push the switch as far as they should to break connection. Good hunting

Posted on May 26, 2010

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New alternator & battery somethings draining the battery also new battery cables and terminal


The parts you put in are not the source of the problem. You may have had some defects in those parts but now the true source of the battery drain needs to be fixed.

There are some testing machines Dealerships have that plug into the wiring loom and show whether something is shorting out or not turning off. These machines shorten diagnosis times but as car models change it gets expensive to have all of these machines. With your 1999 model, an experienced mechanic may have seen this problem before and will know what to check.

You need to be careful and Web search for wiring diagrams if trying to fix this yourself. Some wiring to the car computer is sensitive. With the battery disconnected an ohmmeter can show whether a circuit is grounding when it should be off.

Often a relay can refuse to release a connection when it is shut off. That means power can still go to the part that the relay connects and the battery will drain.

Some major drains can be the rear window defroster. Power window relays or sound systems can drain a battery too.

Jul 26, 2017 | Mercury Cars & Trucks

1 Answer

1998 Ford Taurus battery light on battery drains overnight


have battery and alternator tested most auto stores offer this service for free -if good the following showes how to look for a parasite drain
How to Test and Find Parasitic Battery Drain Key Off How to Find Parasitic Battery Drain

Oct 01, 2016 | Ford Cars & Trucks

1 Answer

Electrical battery drain OR "parasitic drain"


Seen this "mystery drain" many times. Check spark at the battery to see how big the drain is. For this simple test, blow away any (explosive) battery charging fumes. Leave one terminal on and gently touch the other to its post in fairly dark surroundings. Then try it again with the wires taken off the alternator. Your spark is now probably much less. Usually bad diodes leaking electricity backwards through the alternator cause this drain. Replace the alternator or the diode pack inside it. Some mechanics recommend actually measuring the drain.... hahaha. OK whatever.

Dec 27, 2013 | 2008 Subaru Outback

1 Answer

98 chevy blazer 4.3L battery drains over night


Do a parasitic draw test . It's not the starter wires , something is saying on , a module , a light . Watch the video .
The BEST Way TO Perform Parasitic Draw Test

May 15, 2017 | Cars & Trucks

1 Answer

2003 mustang gt drains battery in 2 days


03 Mustang GT (Parasitic) Battery Drain Fix
welcome.gif
Hello,
I am seeing a lot of mustangs are having battery draining issues and I wish to share some simple solutions found while working on a friends 03 GT 4.6ltr.

In a quiet area, key switched off, hood up, Listen carefully close to alternator. I heard a high pitched hissing/whistle sound at low volume, came from back of alternator. This sound was the voltage regulator/rectifier staying on when key is off due to faulty diodes inside the voltage regulator/rectifier circuit, can cause battery to go dead after car not ran in about 2-7 days.

After having the alternator tested free at a parts store, test showed alternator was good because the faulty diodes in the alternator did not show up on the test, the machine did not test for faulty drain back issues that were present.
Alternator on-car-fix:

There was battery voltage running at all times through the two-wire connector on back of alternator. Disconnect the battery first for safety and to reduce chance of short circuit. The yellow wire/with white stripe is hot while car is off so I traced this from the 2-wire connector on the alternator then closer towards driver side front fender. Next I cut the Yellow/White Stripe wire, spliced a good connection wire to it and ran it through a hole in the fire-wall to the fusebox(under dash), connected it to a 15a fuse that does not get used but has power when key is turned on but no power when key is off.

The purpose for re-routing the hot wire to the alternator, is to turn off the alternator charging circuit when the key is turned off so it may not run down the battery. I am seeing good results with this fix(or patch) so far. No More Parasitic Battery Drain!

Another fix can be to change the small pulley on the alternator to a larger pulley so the alternator does not spin too fast, putting too much energy through the diodes can cause a charging system to act a fool. So if you have charging issues and have an alternator changed, putting a larger pulley on can make sense turn into saved dollars(especially on high revving engines).

I hope this info helps to solve some draining battery and/or alternator issues.

thanks.gif for reading,

TyBorg1

Apr 12, 2012 | 2003 Ford Mustang

3 Answers

My sister has a Pontiac Sunfire. I believe the year is 2005. Well she's having problems that every morning a car needs a to boost her vehicle. The battery and alternator have been replaced. We can't seem...


What you are describing is called a "Parasitic Drain"

In automotive terms, a parasitic drain is an electrical load that draws current from the battery when the ignition is turned off. Some devices, such as the PCM and the radio memory are intended to draw a very small amount continuously. These draws are measured in milliamps (mA).

An abnormal parasitic drain could be something like a glovebox lamp, lighted sunshade mirror, aftermarket accessory, or luggage compartment light that remains on but undetected. Or an electronic component may malfunction and cause a parasitic drain that is larger than normal specification.

The recommendation for maximum parasitic drain is around 30 mA (0.030 amp). A typical drain today actually falls into the 7-12 mA range, even though some vehicles do approach the maximum.

Unfortunately, many mechanics do not know how to properly test for and/or track down a parasitic drain. You need to find a shop that has a technician that is familiar with this type of problem. The best way is to ask them specificly if they know how to diagnose a parasitic drain. If they hesitate, or act like they don't know what you are talking about, move on to the next shop.

Oct 31, 2009 | 2005 Pontiac Sunfire

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