toyota matrix when below 0- car will not start with 2 batteries

[ozz35]

I know that someone has posted that there car will not start but if i have 2 optima yellow top batteries and only when it sits for longer than 8 hrs below 0 temps outside the car will not start. but when i get the car to get jumped then it starts right up when jumpint it i just attach the jumper cables and i dont wait and just starts right up. I have bought the front battery about a month ago and the other one about a year and a half ago.


Any help would be greaqtly appreciated. Thanks all who post something.

[fishexpo101]

YellowTops have great reserve capacity, being a deep cycle battery, but generally don't put out that much cranking power compared to the RedTops or other heavy duty batteries. But should be way over what the OEM Delphi battery could put out.

Definitely have the batteries checked out, could be that by not exercising the deep cycle ability, the plates have suffered some sulphur buildup and don't generate as much juice as they should.

Double check that the battery posts aren't heavily corroded, same with the battery terminals. If the car starts immediately when jumped, but not from the YellowTop - could be either a bad YellowTop or corrosion on the battery terminals that prevent power getting to the starter. Jumping the battery, might temporarily cause a good connection (battery clamps bite into the material, bypassing the corrosion).

Also take a quick peek at the starter terminals - they are prone to corrosion in their present location. Sometimes it is something simple as removing surface corrosion and tightening those nuts under there.

[ozz35]

Thanks for your help and on friday i will try these things out and will let youo know the outcome.