Low System Voltage
06-15-2013, 02:01 AM
#1
CF Veteran
Thread Starter
Join Date: Nov 2011
Location: Northern MN
Posts: 2,433
Likes: 0
Received 6 Likes
on
5 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
Low System Voltage
I have an 89 XJ, and for as long as I can remember the operating voltage has been 11-12v. I've had 4 or 5 alternators in it and the voltage has always been the same. My dad's 96 however runs at 14v like any other vehicle. Also, whenever I give someone a jump it will barely turn their engine over while mine bogs a bit, and never took that much juice to start mine in the first place.
So is this just a renix thing? Or could it be something in the alternator circuit, possibly the voltage regulator?
I had a sub in it for a year and never had any issues with dimming headlights or anything if that helps at all. TIA
So is this just a renix thing? Or could it be something in the alternator circuit, possibly the voltage regulator?
I had a sub in it for a year and never had any issues with dimming headlights or anything if that helps at all. TIA
06-15-2013, 02:15 AM
#2
CF Veteran
Join Date: Mar 2010
Location: Broward County Fl.
Posts: 47,923
Likes: 0
Received 22 Likes
on
22 Posts
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Ive got same issue same trial solutions cant figue it out. When moneys better here im thinking maybe gauge replacement.
06-15-2013, 02:27 AM
#4
CF Veteran
Join Date: Mar 2010
Location: Broward County Fl.
Posts: 47,923
Likes: 0
Received 22 Likes
on
22 Posts
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
You got me searching I forgot about finding this fix looks like I found my fathers day gift to my self..http://www.jeepforum.com/forum/f11/r...ge-fix-684375/
Trending Topics
06-15-2013, 03:26 PM
#8
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,875
Received 1,526 Likes
on
1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I have an 89 XJ, and for as long as I can remember the operating voltage has been 11-12v. I've had 4 or 5 alternators in it and the voltage has always been the same. My dad's 96 however runs at 14v like any other vehicle. Also, whenever I give someone a jump it will barely turn their engine over while mine bogs a bit, and never took that much juice to start mine in the first place.
So is this just a renix thing? Or could it be something in the alternator circuit, possibly the voltage regulator?
I had a sub in it for a year and never had any issues with dimming headlights or anything if that helps at all. TIA
So is this just a renix thing? Or could it be something in the alternator circuit, possibly the voltage regulator?
I had a sub in it for a year and never had any issues with dimming headlights or anything if that helps at all. TIA
06-15-2013, 03:27 PM
#9
CF Veteran
Thread Starter
Join Date: Nov 2011
Location: Northern MN
Posts: 2,433
Likes: 0
Received 6 Likes
on
5 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
Originally Posted by cruiser54
Ever added grounds in the engine bay or done my instrument panel ground upgrade?
06-15-2013, 03:32 PM
#10
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,875
Received 1,526 Likes
on
1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Click on the "pink link" in my signature right below here and do what is outlined in Posts 1, 3, and 18 before chasing around for other things. A very good time investment into your renix Jeep.
06-24-2013, 10:29 PM
#11
CF Veteran
Thread Starter
Join Date: Nov 2011
Location: Northern MN
Posts: 2,433
Likes: 0
Received 6 Likes
on
5 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
Ok, so I followed post #18 but couldn't find an end to fit the stud. So I ran the wire out to the door check bracket. My mirrors are worlds better! Yet voltage remains the same... Oh, and I discovered a bad pressure sensor too 
no extra load on the system too btw. I was parked when I took this.
no extra load on the system too btw. I was parked when I took this.
06-24-2013, 10:39 PM
#12
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,875
Received 1,526 Likes
on
1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Progress.
Have you done 1 and 3 yet? I put them in order for a reason!!! LOL.
Have you done 1 and 3 yet? I put them in order for a reason!!! LOL.
Last edited by cruiser54; 06-25-2013 at 06:39 AM.
Thread
Thread Starter
Forum
Replies
Last Post
Zerocyde
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
45
06-29-2022 05:51 PM
NM-XJ
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
18
10-23-2018 04:21 PM
2heapjeeps
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
13
10-04-2015 10:52 PM
2heapjeeps
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
2
09-07-2015 11:30 PM
Jicki Rough
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
09-02-2015 09:36 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)