I have a 1998 ford expedition 4x4 5.4 alternator good but seems not to charge battery

Asked by Sep 03, 2016 at 09:30 AM about the 1998 Ford Expedition 4 Dr Eddie Bauer 4WD SUV

Question type: Maintenance & Repair

My 1998 ford expedition has a problem whit
alternator being good already tested at auto zone
and it's good but I put a good charged battery on
the truck turn the truck on and just let it on until it
drains the battery cause it seems that it's just
working whit the battery!! And not the alternator!!
And if I take the negative cable off while the truck
is on the truck turns off as soon as I disconnect
that cable !!

3 Answers

355

CHECK THE MEGA FUSE FORM THE ALTERNATOR. TRACE THE POSITIVE CABLE FROM THE ALTERNATOR AND THERE IS USUALLY A MEGA FUSE IN BETWEEN

237,935

Try this test, with the SUV on and running in idle, probe the battery with your multimeter, are you getting around 14V? 12.3V with the SUV off? That will tell you the charging system is working properly. If it wasn't the battery light will be lit on the dash. Also , it's not a good idea to remove the battery cables while the vehicle is running.

355

THIS WIERE DIAGRAM SHOULD HELP

Your Answer

Add photo

Related Questions

Expedition

Looking for a Used Expedition in your area?

CarGurus has 24,889 nationwide Expedition listings starting at $700.

ZIP:

Search Ford Expedition Questions

Ford Expedition Experts

#1 T_S_T
T_S_T
Reputation 1,890
#2 Larry Sturgis
Larry Sturgis
Reputation 1,310
#3 lightGear
lightGear
Reputation 1,010
View All

Related Models For Sale

Used Chevrolet Tahoe
548 Great Deals out of 29,234 listings starting at $1,699
Used Ford Explorer
944 Great Deals out of 72,519 listings starting at $1,000
Used Chevrolet Suburban
323 Great Deals out of 19,720 listings starting at $2,000
Used Lincoln Navigator
118 Great Deals out of 5,791 listings starting at $1,900
Used Ford F-150
2,191 Great Deals out of 206,316 listings starting at $1,499
Used GMC Yukon
374 Great Deals out of 18,226 listings starting at $2,950
Used Cadillac Escalade
239 Great Deals out of 11,197 listings starting at $2,495
Used Dodge Durango
274 Great Deals out of 22,704 listings starting at $1,200
Used Ford F-250 Super Duty
343 Great Deals out of 46,938 listings starting at $1,895
Used Chevrolet Silverado 1500
1,718 Great Deals out of 175,749 listings starting at $1,250

Used Cars For Sale

2017 Ford Expedition For Sale
21 Great Deals out of 14,278 listings starting at $29,888
2016 Ford Expedition For Sale
131 Great Deals out of 2,317 listings starting at $25,799
2015 Ford Expedition For Sale
20 Great Deals out of 750 listings starting at $19,995
2014 Ford Expedition For Sale
39 Great Deals out of 832 listings starting at $17,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.