View Single Post
Old 09-22-2020, 11:38 AM   #85 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.16 mpg (US)
Thanks: 4,058
Thanked 6,957 Times in 3,602 Posts
I diagnosed/rescued a dead Nissan Leaf!





Remember my friends who bought this Leaf, back in post #60?

They've had it exactly 2 years as of this week. Zero problems in 50,000 km (30k mi.), but on the weekend it wouldn't "start". Wouldn't charge either.

I guessed it was a dead 12v battery, so went over with my voltmeter and jumper cables.

Fixed!



Sure enough, the 12v was sitting at 4.x

We connected it to a good 12v battery, and the car immediately started taking a charge from the big wall charger, plus the 12v voltage shot up to 14.x

He left it several hours on the charger, and then checked it the next day: back down to 12.4 volts. I told him the batt was probably toast, and the question was whether he left some 12v accessory on, or if the battery is defective. He's got a call in to the Nissan dealer to get it looked at at.



I wonder if the car's computer will have stored info about what happened.
Attached Thumbnails
Click image for larger version

Name:	AUTOMOTIVE-6.-Final-Automotive-Jumper-Cables-Made-Up-Batt-768x432.jpg
Views:	117
Size:	41.0 KB
ID:	29176  
__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following 2 Users Say Thank You to MetroMPG For This Useful Post:
ldjessee00 (09-22-2020), redpoint5 (09-23-2020)