quit charging,blowing in-line fuse

[papawolfe]

i have a 1997 ford powerstroke it quit charging and blew the inline fuse to starter relay i replace the starter the alternater,the glow plug relay,glow plugs i check out the wiring with ohm meter ,i'm stumped what could be the problem. thanks to anyone who can help me.

[mustangmike351c]

take the fuse out and check for short to ground from there

[papawolfe]

Originally Posted by papawolfe

i have a 1997 ford powerstroke it quit charging and blew the inline fuse to starter relay i replace the starter the alternater,the glow plug relay,glow plugs i check out the wiring with ohm meter ,i'm stumped what could be the problem. thanks to anyone who can help me.

i did pull the fuse also took the harness off that the in-line fuse was attach to and check for broken wires and burn ones and it looks good it's the harness that goes to the alternater and a/c

[way2old]

Originally Posted by mustangmike351c

take the fuse out and check for short to ground from there

Mustangmike351c has a good point. Pull fuse and use an ohmmeter to check from each side of fuse holder to ground. Since this is a power circuit, there should be an infinity reading(no movement on an analog meter or OL reading on a digital readout meter.) If there is continuity to ground, you need to unhook wires at each connection until the continuity disappears. Then look at that section of wires for short to ground. If you unhook the alternator and continuity goes away, the alternator is shorted internally. Hope this helps some.

[papawolfe]

Originally Posted by way2old

Mustangmike351c has a good point. Pull fuse and use an ohmmeter to check from each side of fuse holder to ground. Since this is a power circuit, there should be an infinity reading(no movement on an analog meter or OL reading on a digital readout meter.) If there is continuity to ground, you need to unhook wires at each connection until the continuity disappears. Then look at that section of wires for short to ground. If you unhook the alternator and continuity goes away, the alternator is shorted internally. Hope this helps some.

thanks i will try that to see what happens it will be acouple of days before ido it