NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > OEM Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

OEM Tech Discussion Forum for OEM (Original Equipment) or stock XJs and MJs.

Reply
 
Thread Tools Display Modes
  #1  
Old June 8th, 2017, 22:50
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
117a alternator on a '98 4.0

A few months ago I replaced my stock alternator. Unfortunately, I mistakenly go the 90a version and later found out my build sheet specified the 117a version. No big deal, she ran great though the alternator was definitely louder with a more pronounced whine. In the last couple of weeks though, the whine has gotten MUCH louder and I think it may be going out on me.

I'd like to find a closer match to replace it with, but obviously the OEM Denso 117a isn't still available. I'm not comfortable grinding the bracket right now, and don't have time to upgrade the wiring for a higher output alternator. (Plus I don't have any real power needs over stock).

tldr: What ~120a alternator should I pick up that's a direct bolt in, good quality, and in the neighborhood of 120a?
Reply With Quote
  #2  
Old June 9th, 2017, 05:42
Green Mesa XJ's Avatar
Green Mesa XJ Green Mesa XJ is offline
NAXJA Forum User
 
Join Date: Aug 2004
Location: Pensacola, FL
Posts: 1,050
117a alternator on a '98 4.0

Not sure. I know on the older 91-94-95 XJ the alternators normally had a much higher peak load out put than 90, although that's what they were rated for.

I searched on car-part.com and found a few junk yards that say they have a 117, rock auto shows a couple of higher amp alternators too but I'm not sure if they are the same as what you had.


Sent from my iPhone using Tapatalk
Reply With Quote
  #3  
Old June 9th, 2017, 06:12
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
Re: 117a alternator on a '98 4.0

Definitely not exactly the same. The stock was a Nippondenso 117a. I can grab the markings off it in a bit. Anyone have broad brand recommendations?
Reply With Quote
  #4  
Old June 9th, 2017, 06:43
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
Re: 117a alternator on a '98 4.0

Original was a Denso 121000-3602.
Reply With Quote
  #5  
Old June 9th, 2017, 06:51
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
Re: 117a alternator on a '98 4.0

Searching around, I think your right. It may have been rated 90a and peaked at 117. I guess the Omix-Ada I got was a lemon?
Reply With Quote
  #6  
Old June 9th, 2017, 07:04
Green Mesa XJ's Avatar
Green Mesa XJ Green Mesa XJ is offline
NAXJA Forum User
 
Join Date: Aug 2004
Location: Pensacola, FL
Posts: 1,050
117a alternator on a '98 4.0

56005685AB is the mopar number I get for the denso number. eBay has a few 117a alternators, not sure on their part #'s

Omix-ada quality has slipped big time, had a belt pulley from them destroy itself in a very short span of time. After it broke I noticed on the box it said made in china, I'm guessing they outsourced production to a cheaper Chinese company with poor QC.
Do you have a warranty you can use for them ?

Far as brands go I've had good luck with TYC new alternators for our jeep and nippondenso rebuilt and new starters and alternators for our toyotas. Also their radiator were an exact match for the oem Toyota for a fraction of the cost.
Although it looks like nippondenso may be outsourcing to china too now.


Sent from my iPhone using Tapatalk
Reply With Quote
  #7  
Old June 9th, 2017, 08:12
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
Re: 117a alternator on a '98 4.0

Great, thanks. I was leaning towards Remy or TYC. Don't happen to know which'd be quieter? I hate the sound of a whiny alternator.
Reply With Quote
  #8  
Old June 9th, 2017, 08:20
Green Mesa XJ's Avatar
Green Mesa XJ Green Mesa XJ is offline
NAXJA Forum User
 
Join Date: Aug 2004
Location: Pensacola, FL
Posts: 1,050
117a alternator on a '98 4.0

The new TYC is still quiet after a year of constant use. Remy is or was a good name. I think a denso rebuilt would be ok too.
But I do know the TYC 2-13341 has work out well for us so far.


Sent from my iPhone using Tapatalk
Reply With Quote
  #9  
Old June 9th, 2017, 08:31
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
Re: 117a alternator on a '98 4.0

TYC it is. Thanks.
Reply With Quote
  #10  
Old June 15th, 2017, 10:05
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
Re: 117a alternator on a '98 4.0

Got that installed this morning. Great advice. Its charging properly and way quieter than the Omix Ada.
Reply With Quote
  #11  
Old June 16th, 2017, 08:11
Green Mesa XJ's Avatar
Green Mesa XJ Green Mesa XJ is offline
NAXJA Forum User
 
Join Date: Aug 2004
Location: Pensacola, FL
Posts: 1,050
117a alternator on a '98 4.0

Glad it worked out for you! The test sheet We got with ours had good numbers for peak charging .
Even though I believe it's a Chinese product the quality seems very good.




Sent from my iPhone using Tapatalk
Reply With Quote
  #12  
Old June 17th, 2017, 15:13
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
Re: 117a alternator on a '98 4.0

Interestingly, I feel like I have better acceleration in 1st and 2nd. Is this a placebo effect or is it possibly related?
Reply With Quote
  #13  
Old June 17th, 2017, 21:04
Green Mesa XJ's Avatar
Green Mesa XJ Green Mesa XJ is offline
NAXJA Forum User
 
Join Date: Aug 2004
Location: Pensacola, FL
Posts: 1,050
117a alternator on a '98 4.0

Maybe the computer is relearning.



Sent from my iPhone using Tapatalk
Reply With Quote
  #14  
Old June 17th, 2017, 23:10
asymptonic asymptonic is online now
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 116
Re: 117a alternator on a '98 4.0

Ah, makes more sense with the battery disconnected for an hour.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
LED Alternator Light with PCM Controlled Alternator??? ROKRWLR Modified Tech Discussion 0 March 25th, 2015 08:43
Different alternator brackets for different years/alternator upgrades for a 2000? krakhedd Modified Tech Discussion 6 February 15th, 2014 11:53
WJ 4.0 Alternator Bracket - Relocate the Alternator on Your XJ freerider15 For Sale: Private Party Only. XJ ITEMS ONLY 5 July 29th, 2013 19:31
I upgraded my alternator to the 136a alternator from a ZJ whats next? Demolition_x Modified Tech Discussion 16 July 22nd, 2011 10:18
Alternator Relocation / Alternator Upgrade Jamescad04 Modified Tech Discussion 6 April 1st, 2011 21:21


All times are GMT -7. The time now is 21:04.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014