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Weak Battery/Alternator Observations #5283698 12/03/19 07:57 AM
Joined: Sep 2002
Posts: 3,615
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Gebo Offline OP
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Just finished the second and hopefully my last "weak battery/alternator" learning experience.

In case some of you don't know, a weak but still car cranking battery can send you all kinds of CEL codes. I got some of the weirdest codes and some really weird problems that on the surface had nothing to do
with my battery or alternator. My understanding is that today's cars are much more sensitive to voltage and fluctuation levels.

From this point on, when one of my cars starts acting weird, my first attempt at diagnosis is gonna be to check my battery and alternator health.


'98 LEX LS400 300K
'02 4Runner 245K
'05 Lex LS430 85K
'07 Lex GX470 65K

Shell Gas and Truck & Pennzoil Full Syn HM
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Weak Battery/Alternator Observations [Re: Gebo] #5283702 12/03/19 08:06 AM
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Chris142 Online Content
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Posts: 19,910
And check for corrosion on the terminals too.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Weak Battery/Alternator Observations [Re: Chris142] #5283716 12/03/19 08:15 AM
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Gebo Offline OP
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Originally Posted by Chris142
And check for corrosion on the terminals too.
\

Yeppers.

I've started using that red terminal spray.


'98 LEX LS400 300K
'02 4Runner 245K
'05 Lex LS430 85K
'07 Lex GX470 65K

Shell Gas and Truck & Pennzoil Full Syn HM
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Weak Battery/Alternator Observations [Re: Gebo] #5284548 12/04/19 12:27 AM
Joined: Mar 2015
Posts: 7,207
B
bbhero Offline
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Good points Gebo...

And if you have a Federated Auto parts store near you... You could get a East Penn made battery with a 3 year free replacement warranty for $117 for a group 24f... A very good price for that in my opinion.


Nissan Altima 3.5 Coupe
Napa full synthetic 5w30 Wix 57356 Oil filter
"Treat your family like your friends and treat your friends like your family."
Re: Weak Battery/Alternator Observations [Re: Gebo] #5284607 12/04/19 04:56 AM
Joined: Sep 2002
Posts: 3,615
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Gebo Offline OP
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I didn’t know Federated had East Penn batteries. I only thought Napa did.

And I got a Federated 2 miles from my house banana


'98 LEX LS400 300K
'02 4Runner 245K
'05 Lex LS430 85K
'07 Lex GX470 65K

Shell Gas and Truck & Pennzoil Full Syn HM
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
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