Hey guys thanks for looking, ok basically i bought a pug 306 td the other day but the guy i bought it off went to jump start it as is had a flat battery after standing for 2 months, he connected the terminals wrong on the jump leads, which he thinks blew the aalternatorand the batterie, i however think that the batterie will be fried but surely there will be a fuse somewhere to stop the aalternatorand all the other electrics being fried?? do you think i am right? and if i am right do you know where and how big that fuse is?Thanks people 10points for best answer!
If the owner's manual is with it, check the diagram for the fuse box. It should tell you if there is more than one fuse box in the car. Open the fuse box and start checking fuses, The ones that protect the alternator and other major components are usually the biggest. You should check all of them by pulling each out, and looking for a melted piece in the fuse. Try to jump start the car again with the leads attached properly. see if it starts and if everything works, if it does you're golden. If it doesn't, check for fusible links, these are pieces of wire that are designed to melt under high amperage. They are usually a different color than the wire they are attached to and the insulation will look blistered if it has fused. You probably need a new battery anyway, since it stood for two months, with any luck the only thing he fried would be the alternator or voltage regulator. Good luck
Hubby did that to my car and it fried the ecmthe brain box computer.
Most of the time Diesels have a box on the top of the battery which has 3 - 5 fuses in. These are the fuses that Deal with the charging voltage and protect the electrical part of the engine. Look at these and check they are ok. Then try to start the car with a new (Borrow same size battery, or buy one) and look to see if the battery light stays on if not, then that alternator should be ok.
you are better asking an auto elect as i dont know if has computer