alternator need help

[shaneio]

rite my battery while running is reading 18 watts not right changed battery still the same so it must be alternator cos the battery light cam on when trying to rev it a little. if the alternator has gone will it cause the dash lights not to working properly like flashing and also when i turned the steering wheel fans would cut in and out. and also after all that power steering stopped working. not risking driving it.

after all that i found a alternator in my garage but for a mk1 with the 2 bolt on parts for wires and mine is a plug version is there a why if i used the cable end off a mk1 loom and connect it to mine so i can use the mk1 altrnator saves me trying to get another one.

many thaks liam.
if u have pics to help will be great thanks

[raunchz]

sounds like battery or alternator.

Put the battery on charge and see what voltage is across it with a multimeter after an hour or so.

With it running see what the battery voltage is then.

Check the voltage the alternator is putting out

Check the resistance from alternator to battery

[shaneio]

i put 2 diff batterys on both reading 18 watts not the normal 13.5 14.5 on the battery showing u that its charging mines reading well high.

[raunchz]

18 watts or volts ?

[raunchz]

18 watts is nothing when you use 70Amps to convert it to volts

14volts is what you're aiming for

[shaneio]

yer sorry 18 volts it was reading wiv both batterys. i know 95 per cent its the alternator but need to know if i can use the mk1 one and chop and connect the plug on the end of mine so then i connect it up using my loom

[raunchz]

yer sorry 18 volts it was reading wiv both batterys. i know 95 per cent its the alternator but need to know if i can use the mk1 one and chop and connect the plug on the end of mine so then i connect it up using my loom

18 volts isn't right !! I'd change the alternator asap tbh - you not modified anything else? Like changed the crank pulley? If not then get another alternator.

what's the battery voltage when its just sat disconnected from the car?

Yeh, basically the big ring terminal is for it to output the power ot the starter motor, then onto the battery.

The smaller one is for it to sense when it's not producing enough voltage and the battery light comes on.

Can switch over to a mk1 on, easy to do

[shaneio]

12 when its not running. nope nothing modded.

. how would i change the end connectors to use the mk1 alternator.cos im sure my one has 2 wires for the plug and mk1 only has one wire. could u be able to tell what to do.

[raunchz]

12 when its not running. nope nothing modded.

. how would i change the end connectors to use the mk1 alternator.cos im sure my one has 2 wires for the plug and mk1 only has one wire. could u be able to tell what to do.

I have converted mine the other way, going from a 1 wire loom, to a 2 wire plug. I just used one of the wires on it and it worked fine. Can use trial and error if you want - the colours on yours are likely to be different to mine. I used the green one though, as opposed to the pink one.

[shaneio]

ok thank u for that. i will do that in the morning then thank you again

[raunchz]

ok thank u for that. i will do that in the morning then thank you again

Yeh no probs, re-check the voltages when you've fitted the new alternator just to make sure.

[shaneio]

its all good now fixed and works great