Having problems with your Ford F-250 ?

2002 FORD F250 V10-Gas, super duty, 4 wheel drive. Instrument panel out. Altanator not charging system. Replaced Altanator/ check fuses and battery both good. Fixed wire under the boot of the gear shift boot. Checked bulbs on instrument panelall look good. what is wrong? Thanks [email protected]

Posted / edited by AnonymousUser on : 19-02-2018

Answers :

This definately sounds like a fuse or fuse link has failed..\015\012Don't look at the fuses, check them electrically with a test lamp or multimeter.\015\012And make sure you check both the internal fuse panel AND the fuse panel under the hood.\015\012Adjacent to the battery is a bank of fuse links hidden under a cover which may be plastic or metal.\015\012These are high current fuses and the first line of defense if you blow a rectifier diode..\015\012They are also very susceptible to vibration and can fail purely due to shakes and rattles so again, check them electrically.. Looking at them is not enough.\015\012Replace any which fail the test but ONLY with a replacement of the same rating. NEVER use a higher rating.\015\012If the fuse blows again then you have a short circuit to ground which can be a pain to trace.\015\012You may also have a faulty regulator which can be mounted inside the alternator itself or it may be mounted on the firewall. If this is the fault, replace the regulator as they are not a repairable item..\015\012The warning lamp supply feed is common with the alternator ignition feed either through a sensing wire or through the alternator warning lamp. Loss of this supply will shut the alternator down and cause loss of all the warning lamps as well as some other issues.\015\012Check fuses electrically and make sure you check each and every one.. this vehicle has at least two fuse panels and some ( with various accessories) have three panels !!
A couple of possibilities
\015\012Bad connection on ground wires
\015\012Fuses located under hood (are these the ones you checked)
\015\012Bad or frayed cable getting moisture in it
\015\012If you have a fuseable link (really fat wire running off alternator) the fuse in the wire could have blown which means replacing that wire (However, I believe fueseable links were only on the diesels)
\015\012a Weak tensioner can cause the alternator not to charge properly. If you can easily push the belt tensioner then it is time to replace it. If you ahve to put excess force or pry bar to move it then it is fine.
Repair Help & Product Troubleshooting for Ford F-250

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