New Optima battery = Bad (POSSIBLE???)
Thread Starter
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Joined: Oct 2011
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From: Colorado
Year: 1998
Model: Cherokee
Engine: 242 I6
Originally Posted by xjsnake
Optima had a rough patch of quality which seems to be behind them from what I've been reading (no personal experience). In this case, the battery certainly doesn't seem to be at fault, this screams (as others have said) to be a dead or failing alternator. Relatively cheap and easy to replace fortunately.

Anyone know where I can pick up an alternator? Like NAPA, AZ, Car Quest, AAP, Pep Boys?
V/r,
awsgrayrd.
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From: Nashville, TN
Year: 1997, 1993
Model: Cherokee
Engine: 4.0L
Sounds good, like I mentioned before...I'll check the reading with my multimeter when I get home after class. This finally gives me a reason to use my new Snap-On multimeter 
Anyone know where I can pick up an alternator? Like NAPA, AZ, Car Quest, AAP, Pep Boys?
V/r,
awsgrayrd.

Anyone know where I can pick up an alternator? Like NAPA, AZ, Car Quest, AAP, Pep Boys?
V/r,
awsgrayrd.
CF Veteran
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From: California
Year: 1992
Model: Cherokee
Engine: 4.0 HO
If you're going to replace the alternator it might be a good time to go with an upgraded one. You can use the 136amp alternator out of the v8 5.2l grand cherokees.
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From: California
Year: 1992
Model: Cherokee
Engine: 4.0 HO
136 Amp Alternators that will fit can be found in:
1997-1998 Dodge Full Size Van
1997-1998 Dodge Dakota
1998 Dodge Durango
1997-1998 Dodge Ram
1997-1998 Jeep Grand Cherokee
1997-1998 Dodge Full Size Van
1997-1998 Dodge Dakota
1998 Dodge Durango
1997-1998 Dodge Ram
1997-1998 Jeep Grand Cherokee
Thread Starter
Member
Joined: Oct 2011
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From: Colorado
Year: 1998
Model: Cherokee
Engine: 242 I6
Originally Posted by sthon
If you're going to replace the alternator it might be a good time to go with an upgraded one. You can use the 136amp alternator out of the v8 5.2l grand cherokees.
Originally Posted by xjsnake
I use Napa for electronics. I've had problems with alternators from both Oreilly and Autozone.
That's how I bought the Optima! Original: $200, what I bought it for: $145!
Originally Posted by sthon
136 Amp Alternators that will fit can be found in:
1997-1998 Dodge Full Size Van
1997-1998 Dodge Dakota
1998 Dodge Durango
1997-1998 Dodge Ram
1997-1998 Jeep Grand Cherokee
1997-1998 Dodge Full Size Van
1997-1998 Dodge Dakota
1998 Dodge Durango
1997-1998 Dodge Ram
1997-1998 Jeep Grand Cherokee
V/r,
awsgrayrd.
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From: Colorado
Year: 1998
Model: Cherokee
Engine: 242 I6
Originally Posted by 9greenmachine8
I wouldn't buy it from autozone for sure and my red top is the best battery I have ever owned and it says made in Mexico on it
V/r,
awsgrayrd.
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From: Fontana, CA.
Year: 1990/2001
Model: Cherokee
Engine: 4.0
I was once told by a buddy that happens to know alot about auto electric, that you should never disconnect the battery on any vehicle with electronic ignition and an ECU because it causes a big spike in voltage that can fry the ECU.
Thread Starter
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Joined: Oct 2011
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From: Colorado
Year: 1998
Model: Cherokee
Engine: 242 I6
Originally Posted by bajaxj
I was once told by a buddy that happens to know alot about auto electric, that you should never disconnect the battery on any vehicle with electronic ignition and an ECU because it causes a big spike in voltage that can fry the ECU.
V/r,
awsgrayrd.
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From: Nashville, TN
Year: 1997, 1993
Model: Cherokee
Engine: 4.0L
Sounds about right, auto electronics is something I never liked getting into unless it was changing a bulb, fixing a loose connection, or changing a fuse! Unfortunately, I still have yet to test the alternator. Kind of just been overwhelmed with this nursing program. So this afternoon after 6 hrs of chemistry I'll do it and update everyone!
V/r,
awsgrayrd.
V/r,
awsgrayrd.
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From: Colorado
Year: 1998
Model: Cherokee
Engine: 242 I6
Well I hooked up the multimeter to the battery and it's definitely the alternator. After starting starting it up and letting it run with the radio on, headlights on, and heat on blast to pull a full load. Went from 11.48-to-11.39 while on full load.
Went to AAP and was able to swap the optima yellow top out with a new one. Also ordered a Remy alternator 90amps; original price $119 dropped it down to $90.
I was told that if I increase the amperage output to 136 from 90, it cause issues like blowing fuses, especially if I don't have a winch or OBA yet.
Just make sure your equations are balanced on each side of the reaction haha.
Ha, thanks for the reminder!
V/r,
awsgrayrd.
Went to AAP and was able to swap the optima yellow top out with a new one. Also ordered a Remy alternator 90amps; original price $119 dropped it down to $90.
I was told that if I increase the amperage output to 136 from 90, it cause issues like blowing fuses, especially if I don't have a winch or OBA yet.
Originally Posted by xjsnake
Just make sure your equations are balanced on each side of the reaction haha.
V/r,
awsgrayrd.
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From: Richmond
Year: 98
Model: Cherokee
Engine: 4.0
Don't believe that...What do you think people with winches and OBA do while those items are not on (drawing current)? Just because you make more current than the system uses doesn't mean you'll blow any fuses. I run a 200 amp Mean Green alternator with two Yellowtops. The only difference you'll notice with a better alternator is that your battery gauge won't drop as easily with lights, OBA, and winches.
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Joined: Jan 2011
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From: St. Louis, MO
Year: 1992
Model: Cherokee
Engine: 4.0
Well I hooked up the multimeter to the battery and it's definitely the alternator. After starting starting it up and letting it run with the radio on, headlights on, and heat on blast to pull a full load. Went from 11.48-to-11.39 while on full load.
Went to AAP and was able to swap the optima yellow top out with a new one. Also ordered a Remy alternator 90amps; original price $119 dropped it down to $90.
I was told that if I increase the amperage output to 136 from 90, it cause issues like blowing fuses, especially if I don't have a winch or OBA yet.
Went to AAP and was able to swap the optima yellow top out with a new one. Also ordered a Remy alternator 90amps; original price $119 dropped it down to $90.
I was told that if I increase the amperage output to 136 from 90, it cause issues like blowing fuses, especially if I don't have a winch or OBA yet.


