1989 5.0 batt drain

O

OBXRacer

Member

Sep 29, 2020

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13

Kitty Hawk, NC

Nov 2, 2020

#1

• Nov 2, 2020

• #1

4.5 amp draw with key off. Any recommendations? Jim 252 455 6070 Drag Racer

 

General karthief

wonder how much it would cost to ship you a pair

5 Year Member

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polk county florida

Nov 2, 2020

#2

• Nov 2, 2020

• #2

Pull the fuses one at a time till the draw goes away and that will be the circuit to look at.
BTW, it helps to tell us what you are working on.

 

O

OBXRacer

Member

Sep 29, 2020

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1

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Kitty Hawk, NC

Nov 3, 2020

#3

• Nov 3, 2020

• #3

Did that first! Now checking all diagrams for what is hot all time. Any help is appreciated.

 

General karthief

wonder how much it would cost to ship you a pair

5 Year Member

Aug 25, 2016

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polk county florida

Nov 3, 2020

#4

• Nov 3, 2020

• #4

I believe the 'hot all the time' wires are on the positive side of the solenoid.

 

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Bird76Mojo

5 Year Member

Jul 12, 2018

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Central Illinois

Nov 7, 2020

#5

• Nov 7, 2020

• #5

With an amp draw that large, I'd be thinking a diode is possibly burnt out in the alternator.

 

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General karthief

wonder how much it would cost to ship you a pair

5 Year Member

Aug 25, 2016

27,890

10,550

203

polk county florida

Nov 7, 2020

#6

• Nov 7, 2020

• #6

Windows, door locks, brake lights (running lights run through the mfs switch) and emergency flashers are hot all the time.
The above suggestion is also a possibility.

 

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M

mattang 04

New Member

Sep 27, 2020

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tarpon springs Fl.

Nov 7, 2020

#7

• Nov 7, 2020

• #7

OBXRacer said:

4.5 amp draw with key off. Any recommendations? Jim 252 455 6070 Drag Racer

Click to expand...

i would start by pulling fuses 0ne at a time, see if you could find it that way, if not look at the wiring diagram, see what is hot all the time. 4.5 is a large draw.

 

P

Pinellas50

Active Member

Aug 5, 2020

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Tampa Bay, FL

Nov 8, 2020

#8

• Nov 8, 2020

• #8

I had this problem when I first got my car. Unplug the alternator and test.