99 GC 4.7 not charging
Thread Starter
Newbie
Joined: May 2017
Posts: 10
Likes: 0
Model: Cherokee
99 GC 4.7 not charging
Have replaced the alternator twice now, charges for a little while and then will not charge battery any longer. Voltage drops to around 11.xx, both times now... Have also looked for shorts and not found any. fuses are all good and relays and have checked all body grounds. I have replaced the computer as well. Has anyone experienced this similar situation? Any suggestions would be appreciated
Code scanner reads no codes other than bank 1 o2
Code scanner reads no codes other than bank 1 o2
CF Veteran
Joined: May 2012
Posts: 7,965
Likes: 964
From: Lost in the wilds of Virginia
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Stop looking for "shorts", start checking your cables, connections, and grounds.
Oh, and the Grand Cherokee forum is over here.
Oh, and the Grand Cherokee forum is over here.
Thread Starter
Newbie
Joined: May 2017
Posts: 10
Likes: 0
Model: Cherokee
I've checked all cables before even considering a short. Replaced alternator with a new one and it lasted an hour, before no longer charging battery.
And thank you, I'll post over there haha
And thank you, I'll post over there haha
CF Veteran
Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
Any codes when you scan with a scan tool? Did the parts store bench test those alternators when you returned them? Not unheard of to get a bad rebuilt alternator or two here and there.
I assume you cleaned the connectors and alt ground ahead of time?
I assume you cleaned the connectors and alt ground ahead of time?