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alternator question


dicsosfa
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hi

have just had to replace my 1994 300tdi discovery's alternator due to it being very noisy and after fitting the new one the rev counter does not work all the wires are fitted and tight the only difference i can see is the part i have arrowed in the photo below

should i put this on my new one

the old one - th_GEDC2428.jpg

the new one-- th_GEDC2434.jpg

any help very welcome as i want to get it working again

Roy

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Check the small wire, mine had got hot and the wire had snaped inside the insulation

hi fozsug

have checked small wire even recrimped it, but still does not work.

have spoken to the suplier and he has ordered another onewill keep you posted

Roy

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  • 3 weeks later...

hi

got another one and it was the wrong one :ohdear: had to wait till today and have fitted the " block with the black wire http://i290.photobucket.com/albums/ll26 ... DC2430.jpg" but had to add another 2" to it i hope that won't effect it

but the problem with this one is the pulley on my old one is 2 1/2" across but this new one is only 2" will the auto tensioner take up the extra slack or should i change it if so whats the torque setting for it

Roy

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The "block with the black wire " is a suppressor to stop your alternator causing electrical interference to other peoples appliances.

It has no bearing on the correct operation of your alternator.

Mine fell off years ago without any effect at all.

Can you not change the pulley on the new alternator over with the one off the origonal one.

If you don't have the correct pulley size you're tachometer will not run to engine speed anyway when you get it to work.

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