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mststeel
Joined: 14 Jul 2014 Posts: 2 Location: WARREN, MI
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Posted: Mon Jul 14, 2014 4:27 pm Post subject: battery drain on 86 ASC McLaren Convertible |
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I am the second owner of an 86 ASC McLaren. If it sits for more than a couple of days, the battery completely dies. Has anyone else had a similar problem? If so, can you share with me the solution?
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birdiestobehad
Joined: 10 Nov 2011 Posts: 42 Location: Charlotte, NC
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Posted: Mon Jul 14, 2014 5:01 pm Post subject: |
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I'd check out the battery first. I put a new battery in when I got my 86 from my dad. About 7-8 months in, I was having some nagging issues, such as my trunk release worked sporadically and my new stereo would go into "protect" mode and I'd have to reset. Then at about the 12 month period I had trouble starting the car and a couple of days later it wouldn't start at all after I was running around town and made a few stops. Took the battery to Advance Auto, had it tested, and sure enough it was a bad battery and had it replaced under warranty.
Next time I had my car serviced I had them check to see if there was any kind of power drain and they didn't find any. I did confirm that if there is not enough juice from the battery, it will cause the stereo unit to go into the protect mode. Also, haven't had any issues with the trunk release with the replacement battery.
Good luck. _________________ Terry M.
1986 'vert #118 |
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capri50asc
Joined: 26 Dec 2009 Posts: 290 Location: Canton Michigan
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Posted: Mon Jul 14, 2014 5:32 pm Post subject: Battery Drain |
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Hi
Here what to check first:
1) Make sure your glove box light is off when its closed
2) Make sure the under hood light is also off when the hood is closed
3) Does the car have a after market alarm? Disconnect it!
4) Check the radio, is it after market? Sometimes the unit will make a
draw for the stations to be saved.
If these things check out, you will need to check the draw off the battery
with a meter. If the meter shows a "increase draw" start by pulling out
fuses out of the fuse box one at a time.
. When you see the meter show a drop. The problem is somewhere
that runs through that fuse.
Good Luck Chris
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plumkrazy
Joined: 27 Jul 2005 Posts: 1126 Location: Ann Arbor Michigan
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Posted: Mon Jul 14, 2014 6:10 pm Post subject: |
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Most common is you hit the headlight switch and turn it on or turn it to dome light.
Would also watch for the alt. will cause a drain. fairly common also.
but always start with the battery. If unsure of age and condition. |
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negusm Site Admin
Joined: 25 Aug 2004 Posts: 5183 Location: Charlotte, NC
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U-MAN
Joined: 11 Aug 2008 Posts: 198 Location: Upper Bucks, PA
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Posted: Tue Jul 15, 2014 2:24 am Post subject: |
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Hi. I've got to go along with MIKE. Put a kill switch in my car, and when ever I park it, I flip the switch. Be it at a car show or in the garage. That gives me peace of mind. I've never had a problem, but you sure could get red faced, at a show and my 'vert will not fire up. |
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85asc239
Joined: 01 Nov 2010 Posts: 93 Location: Lansing MI
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Posted: Wed Jul 16, 2014 2:48 am Post subject: |
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Had same problem. Mine was relay for tonneau cover. It is mounted on driver side, in trunk, behind carpet, on wheel well.
Dont know how common it is to fail, but something to check. In a very quiet garage I could hear it click when i hooked battery up.
Jeremy |
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