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alternator testing ?
Posted: February 15th, 2006, 2:29 pm
by m92_MX3
how do you test an alternator ?
Posted: February 15th, 2006, 2:39 pm
by Custommx3
take your car to Autozone, or a car parts place. Alot of them have a machine they can connect to it to test it.
Posted: February 15th, 2006, 8:24 pm
by 95 rs
get a multimeter and put the connections on to the batter and it should read about 14-14.5 volts
Posted: February 15th, 2006, 10:18 pm
by Devilhog
The battery test just shows that it is charging the battery. It doesnt show if the altenator can keep up with electrical load. I can allready tell from my lights dimming every time I brake that my alt is hooped but yet it still charges the battery.
Posted: February 16th, 2006, 6:11 pm
by nicksmx3
autozone'll do it for free
Posted: February 17th, 2006, 4:36 am
by mr1in6billion
Slightly on/off topic:
If I was interested in purchasing a new alternator, preforably one with a much higher output, where should I look, and for what car would it be listed under?
Posted: February 17th, 2006, 6:54 am
by Devilhog
Dont look to far, order yourself a GS alternator, a couple of the GS alternator mounting bolts and get your mechanic to swap your RS Alt pully with the GS pully. Waam Baam Thank you maam
Thats what im doing in a month or so.
Buy brand spanking new. No rebuilts or used.
Posted: February 17th, 2006, 10:38 am
by PATDIESEL
There is an easier way to test an alternator. Crank the car and pull the positive battery cable. If the car stays running then the alt is fine. Be careful when you pull the cable though. You need to pull it off quickly so tha it doesn't ark much (and it will ark some no matter how fast you pull it).
As for the dimming lights, that is the power regulator. It is a part of the alt, but all MX-3s do it, so it doesn't mean your alt is bad or going out. You can help the dimming lights by getting a ground wire kit or a secondary power regulator.
Posted: February 17th, 2006, 2:42 pm
by mr1in6billion
Devilhog wrote:Order yourself a GS alternator and a couple of the GS alternator mounting bolts.
Where would I order it from?
Posted: February 22nd, 2006, 5:21 pm
by m92_MX3
can you bench test them ?