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Nairaland Forum / Nairaland / General / Car Talk / How To Diagnose Alternator Problems (8488 Views)
6 Warning Signs Of A Failing Alternator / 6 Symptoms Of A Failing Alternator / How To Know If Your Car Alternator Is Failing (2) (3) (4)
How To Diagnose Alternator Problems by carblognaija: 8:10am On Feb 24, 2016 |
How to Diagnose Alternator Problems 5 Likes 2 Shares |
Re: How To Diagnose Alternator Problems by honmusa(m): 1:37pm On Feb 24, 2016 |
You can as well use you trusted scan tool to diagnose alternator issue. Follow this simple procedure 1.Start you engine and plug your obd2 scan tool in the appropriate obd2 DLC. 2 .On your scan tool ,look for PID for alternator voltage and observe the reading .On idle with no load ,the voltage is expected to be well above 13volts. 3.Then try load your car by turning on the accessories one by one and observe the voltage reading , 4.Note that if there should be drastic reduction of alternator voltage to near the battery voltage ,the alternator need to be changed . 5.A good alternator should fall slightly in value and maintain the same voltage with increase in load. that all , 1 Like 1 Share |
Re: How To Diagnose Alternator Problems by wiseguy(m): 4:12pm On Feb 24, 2016 |
honmusa:Yes but the post talked about other things that might constitute a problem intead of alternators. I think its more like checking other issues like the battery, terminals and cables before condenming the alternator. However, I prefer voltage drop test more than the odb route. Also in Nigeria, its not everyone that has and understands the scan tool but a simple digital voltmeter is available and easily understood. |
Re: How To Diagnose Alternator Problems by honmusa(m): 6:51pm On Feb 24, 2016 |
wiseguy:Bro the title of the topic is simple'' diagnosing alternator problem ''not checking battery or cable. Any car user that want to take risk of being a DIY should have scanner ,it is easier to use scanner and safer than going tru the risk of using multimeter which can cost you blowing up your ecu if you are still a learner in the act . |
Re: How To Diagnose Alternator Problems by Flexherbal(m): 1:39pm On Feb 26, 2016 |
This is one the reasons why I like nairaland. It is very informative. |
Re: How To Diagnose Alternator Problems by Dottore: 1:42pm On Feb 26, 2016 |
Better than the celebrity trash and poo that have been desecrating the front page 1 Like |
Re: How To Diagnose Alternator Problems by bolt000(m): 1:43pm On Feb 26, 2016 |
wa gbayii op. |
Re: How To Diagnose Alternator Problems by Abbeyme: 1:46pm On Feb 26, 2016 |
Good post |
Re: How To Diagnose Alternator Problems by kingjoe(m): 1:47pm On Feb 26, 2016 |
please i need your advice .two electricians are telling me two different things about my car battery. it produces foam or acid after some time .on e mechanic said the battery is becoming weak that i should change it the other is saying it is overcharging that i should change the alternator.am a bit confused .new battery or change alternator. |
Re: How To Diagnose Alternator Problems by bakynes(m): 1:56pm On Feb 26, 2016 |
A simple lay man way to detect if your alternator is bad is by using another battery to start your car, then remove the Car cable terminals from the battery, if the car stops running then you know your alternator is bad and needs changing. 8 Likes 1 Share |
Re: How To Diagnose Alternator Problems by Ipheyemmy01(m): 1:56pm On Feb 26, 2016 |
I go soon dey flow with una... For now i neva buy my car. So i dey learn. 1 Like |
Re: How To Diagnose Alternator Problems by asumo12: 1:58pm On Feb 26, 2016 |
compressors nko? any help? |
Re: How To Diagnose Alternator Problems by bakynes(m): 2:05pm On Feb 26, 2016 |
asumo12:If you have Gas in your compressor and it starts blowing hot air without any leakages in the A/C system then you compressor is bad. 1 Like |
Re: How To Diagnose Alternator Problems by Okemmuo(m): 2:27pm On Feb 26, 2016 |
Hhhmm...got frens dah got such probs...battery nd aalternator..buh all dis devices "volt meter" nd etc...IONO 1 Like |
Re: How To Diagnose Alternator Problems by Kingjames(m): 2:38pm On Feb 26, 2016 |
bakynes:Which one is lay man, just start the car raise the engine a little allow it to stabilize and pull out the battery cables if the alternator is fine the engine will keep running, you can even drive from Kaduna to Zaria without the battery it's confirmed, tested and trusted. Thank me later. |
Re: How To Diagnose Alternator Problems by asumo12: 2:38pm On Feb 26, 2016 |
it seems my compressor is leaking (cause it stay wet everyday) am i right or wrong ? bakynes: |
Re: How To Diagnose Alternator Problems by bosunolu(m): 3:21pm On Feb 26, 2016 |
bakynes: This is not completely correct. There could be gas in there, the A/C will be blowing hot becos the fan is running but the compressor is still okay but not working because other components to make it work may be faulty. Such components may be terminal problems, drier, capacitor or simply electrical problems. 1 Like |
Re: How To Diagnose Alternator Problems by bosunolu(m): 3:23pm On Feb 26, 2016 |
asumo12: A wet compressor indicates clearly that there is gas leakage. This can be taken care of and your A/C will run smoothly. |
Re: How To Diagnose Alternator Problems by honmusa(m): 3:37pm On Feb 26, 2016 |
bakynes:this crude practice of removing battery when your car is working is a very bad one and should be condemned it can cost you a new ECU because you stand the risk of frying up your ecu with more current flowing in the entire wiring system after the battery which constitute a considerable load has been removed. 1 Like |
Re: How To Diagnose Alternator Problems by bakynes(m): 4:05pm On Feb 26, 2016 |
asumo12:It might be the neck of the compressor, mayb it needs to be resealed. |
Re: How To Diagnose Alternator Problems by bakynes(m): 4:08pm On Feb 26, 2016 |
Kingjames:What is the difference btw wat I said and what you just suggested ?You just rephrased what I said simple. 1 Like 1 Share |
Re: How To Diagnose Alternator Problems by pinetulips(m): 8:13pm On Feb 26, 2016 |
bosunolu: My car ac just stopped, no hot air, no cold air. Compressor belt intact Nd turning, Wetin fit be d wahala |
Re: How To Diagnose Alternator Problems by Sookul: 3:26pm On Sep 30, 2016 |
pinetulips:Oga howfar. You never answer me since. Try and do something abeg |
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