Alternator Troubleshooting Trick

[joseph20]

Mga experts, totoo po ba yung tricks o troubleshooter technique sa alternator na Once na tinnangal yung negative clamp habang umaandar yung auto and then namatay, my sira o may diperensya yung alternator?? Effective po ba iyon. TnX im aDvance

[yebo]

if you mean removing the negative battery clamp when the engine is running, then the answer is yes. the alternator should be the one providing the electrical power needs of the vehicle when the engine is running and not the battery, so disconnecting the battery with the engine running is a means to test the alternator.

[_Cathy_]

That's a nice trick! I'll try that nga

[joseph20]

Sir, kung both negative and positive tinanggal ko, then hindi naman namatay, meaning ayos pa alternator ko?? Subok na po ba talaga ganitong technique?? pagnamatay makina, sure means nun na may sira alternator ko po?? tama po ba?? TnX sir

[technismo]

sir kahit buong battery p aandar pa din yan.. hehehe may function check yan para malaman kung malakas pa yung alternator mo po... tnx

[Taurus]

I've heard some trick of placing the screw driver's tip at the center of the alternator and if it get magnetized then they say that it is functioning . . . not sure though if that is true but induction might really generate some electromagnet.

[bambino]

pwede lang yan sa old school systems

sa mga modern vehicle systems marami nang modules na pwedeng maapektuhan pag nag spike ang alternator ( maaring masira ang module)


pag diy kailangan nyo volt meter

* idle ( without load)= around 13v- 14.8 v okey yan

full load ( head lights ,A/C defoggers , radio ON ) at least 13v * idle ,ok

[jatcos]

^ true, the screwdriver must be placed in the positive output of the alternator. IMO removing negative battery pole is risky way of checking alternator and not adviseable on engines with onboard computer. Sa mga diesel engines at carb ok lang to. The most accurate way of checking is to use Voltmeter-reading must be above 13.5VDC (loaded or unloaded) and should not have AC component.

[joseph20]

TnX mr Bambino. Sir, kasi pinacharge ko lang battery ko for 2hrs. Kung yung readings ng volt meter is nasa around 13.5 to 14, ok paba battery ko? hindi ko pa kailangan palitan??

[CVT]

I've heard some trick of placing the screw driver's tip at the center of the alternator and if it get magnetized then they say that it is functioning . . . not sure though if that is true but induction might really generate some electromagnet.

Yup, the alternator with its rotor, stator and brushes is practically an electromagnet whose output voltage is regulated by the IC voltage regulator or in some old models, diodes or rectifier assembly....

6909:seehearspeak:

[joseph20]

kung 13 to 14 pa po yung reading ng voltmeter, meaning po ba nun na ok pa yung battery at alternator ko po??

[CVT]

^^ Bro.,- is that at full load, A/C on, Headlights On Bright, et al?

If yes, then should be okay.... However, some batteries when they become old will not retain the charge long enough.... It's not totally caught by this test....

6909:seehearspeak:

[joseph20]

Walang load, hindi pa umaandar mga lights, no AC. kasi sira compressor ko. Anu po ba pinaka maganda pero abot kaya na battery? Student Price!hehe

[jatcos]

kasi pinacharge ko lang battery ko for 2hrs. Kung yung readings ng volt meter is nasa around 13.5 to 14, ok paba battery ko? hindi ko pa kailangan palitan??

If youre referring to the alternator, 13.5V to 14V is a good indicator. If youre referring to the battery, voltage is not the accurate indicator, its the current output. You can DIY checking using several 100Watt bulb and timing the discharge rate and monitoring with Voltmeter. Check if there are visible bubbles inside the cells,excessive bubbles means worn plates.. Best if you can bring it to battery shop, they have the appropriate equipment to check if battery is still producing the right ampereage.

[joseph20]

Tnx Sir! It's Better to consult an expert for batteries, TNX

[bambino]

kung 13 to 14 pa po yung reading ng voltmeter, meaning po ba nun na ok pa yung battery at alternator ko po??

to find out if the battery is good:

cranking test
ign coil HT wire grounded

votlmeter hooked up

crank continuously for 30 seconds

while cranking , batt reading should be at least 9.6 V

less than 9.6V = no good

[joseph20]

TnX Mr. Bambino

[Xt7]

if you mean removing the negative battery clamp when the engine is running, then the answer is yes. the alternator should be the one providing the electrical power needs of the vehicle when the engine is running and not the battery, so disconnecting the battery with the engine running is a means to test the alternator.

kagabi nga pala pagka start ko ng makina (4d56 diesel adventure) may maingay na squeeking sound kapag inaapakan gas pedal(binuksan ko hood at suspect ko galing sa alternator) , kapag inaapakan din gas pedal ay lumalakas ang headlight..
e nabasa ko nga tong trick, ginawa ko kanina umaga, inistart ko engine tapos tinanggal ko negative terminal sa battery, tapos after 30 seconds siguro, AYUN! namatay bigla ang makina.. tapos inistart ko ulit, ayon sa amp meter gauge ko, nakalagay lang sa zero kahit na naka ON ang headlights at radio ko tapos ayon, hindi na nagcha charge ang alternator nasa zero lang..

ano gagawin ko mga sir???? help..

[userfriendly]

kagabi nga pala pagka start ko ng makina (4d56 diesel adventure) may maingay na squeeking sound kapag inaapakan gas pedal(binuksan ko hood at suspect ko galing sa alternator) , kapag inaapakan din gas pedal ay lumalakas ang headlight..
e nabasa ko nga tong trick, ginawa ko kanina umaga, inistart ko engine tapos tinanggal ko negative terminal sa battery, tapos after 30 seconds siguro, AYUN! namatay bigla ang makina.. tapos inistart ko ulit, ayon sa amp meter gauge ko, nakalagay lang sa zero kahit na naka ON ang headlights at radio ko tapos ayon, hindi na nagcha charge ang alternator nasa zero lang..

ano gagawin ko mga sir???? help..

sira alternator mo. Bring your car to a auto electrician.

[jick.cejoco]

Mga experts, totoo po ba yung tricks o troubleshooter technique sa alternator na Once na tinnangal yung negative clamp habang umaandar yung auto and then namatay, my sira o may diperensya yung alternator?? Effective po ba iyon. TnX im aDvance

joseph,
in an effort to educate the blind public about the principles and theory of the automotive charging system, please log on to http://www.bcae1.com/charging.htm. these things were not discovered yesterday. guesswork leads to unnecessary and expensive mistakes. use the best tool designed by mankind. this is just the tip of the iceberg of the Charging Systems 101.
jick