2001 Excursion alternator failure
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Mountain Pass
Joined: May 2006
Posts: 224
Likes: 2
From: Ringebu, Norway
2001 Excursion alternator failure
Worked on a 2001 excursion V10 today.
It came in with no charge problems.
The owner had tried 3 different alternators with no result.
First cleaned all ground connections.
Then checked all fuses in both fuseboxes.
Checked battery condition, it's perfect.
Measured charge when engine running, 11.5 volts.
Measured charge on alternator when running, 11.5 volts.
6 hours later I found the problem
Checked all wires from alternator for scuffs/damage or defects.
Then, there it was, a fuselink inside a plastic cable wraping, under the battery tray.
I got suspicious when a orange wire with blue stripe never emerged in the other end, and a brown wire was connected to the starter solenoid.
Removed the fuselink and temporary replaced it with a ordinary wire. Everything works perfectly again.
A new fuselink to be ordered and installed later on
It came in with no charge problems.
The owner had tried 3 different alternators with no result.
First cleaned all ground connections.
Then checked all fuses in both fuseboxes.
Checked battery condition, it's perfect.
Measured charge when engine running, 11.5 volts.
Measured charge on alternator when running, 11.5 volts.
6 hours later I found the problem
Checked all wires from alternator for scuffs/damage or defects.
Then, there it was, a fuselink inside a plastic cable wraping, under the battery tray.
I got suspicious when a orange wire with blue stripe never emerged in the other end, and a brown wire was connected to the starter solenoid.
Removed the fuselink and temporary replaced it with a ordinary wire. Everything works perfectly again.
A new fuselink to be ordered and installed later on
Thread Starter
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Mountain Pass
Joined: May 2006
Posts: 224
Likes: 2
From: Ringebu, Norway
Thank you Mike.
I posted it just for that reason, so that others can be aware of the hidden fuselink.
The owner had washed the engine compartment, and it happened because of that.
This is why I never wash the engine compartment on any of my cars, instead I spray it with tire shine foam, and let it dry.
I posted it just for that reason, so that others can be aware of the hidden fuselink.
The owner had washed the engine compartment, and it happened because of that.
This is why I never wash the engine compartment on any of my cars, instead I spray it with tire shine foam, and let it dry.
Elder User
Joined: Feb 2004
Posts: 898
Likes: 3
Worked on a 2001 excursion V10 today.
It came in with no charge problems.
The owner had tried 3 different alternators with no result.
First cleaned all ground connections.
Then checked all fuses in both fuseboxes.
Checked battery condition, it's perfect.
Measured charge when engine running, 11.5 volts.
Measured charge on alternator when running, 11.5 volts.
6 hours later I found the problem
Checked all wires from alternator for scuffs/damage or defects.
Then, there it was, a fuselink inside a plastic cable wraping, under the battery tray.
I got suspicious when a orange wire with blue stripe never emerged in the other end, and a brown wire was connected to the starter solenoid.
Removed the fuselink and temporary replaced it with a ordinary wire. Everything works perfectly again.
A new fuselink to be ordered and installed later on
It came in with no charge problems.
The owner had tried 3 different alternators with no result.
First cleaned all ground connections.
Then checked all fuses in both fuseboxes.
Checked battery condition, it's perfect.
Measured charge when engine running, 11.5 volts.
Measured charge on alternator when running, 11.5 volts.
6 hours later I found the problem
Checked all wires from alternator for scuffs/damage or defects.
Then, there it was, a fuselink inside a plastic cable wraping, under the battery tray.
I got suspicious when a orange wire with blue stripe never emerged in the other end, and a brown wire was connected to the starter solenoid.
Removed the fuselink and temporary replaced it with a ordinary wire. Everything works perfectly again.
A new fuselink to be ordered and installed later on
Does the voltage regulator somehow sense the battery and charge to the level required?
Thread Starter
|
Mountain Pass
Joined: May 2006
Posts: 224
Likes: 2
From: Ringebu, Norway
Seems like voltage regulator checks battery condition and charges thereafter.
Once the fuselink was replaced by a new wire, it charged 14.3 volts, and dropped down to 13.2 over the next 10 minutes of running.
13.2 volts with all consumers running on full.
13.4 volts with only daytime running lights and fan on low (Ac off).
Battery condition before start was 12.68 volts.
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