130 amp alternator, issues?

[Blackdelux]

Hi all
new topic anyone installed one, did you blow fuses?
what did you upgrade if anything?
there are listing quoting that the v6 can run 130 amps, and ebay sellers promoting 130 amp replacements that are genuine denso that are made for 150 prado d4d and hiace
any help or experience you've had appreciated





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[Blackdelux]

Ok will answer my own post FYI
used this puppy today
http://www.ebay.com.au/itm/131703769421 ... EBIDX%3AIT
first day no issues, spoke to auotleccy today, he gave me thumbs up to do it as the car will only draw as many amps as required and the alternator is not supply full amount of amps unless it has some where to go , as i have two batteries they are soaking up the volts and amps like a lizard in the sun and i am getting the best readings to the power supply in the back of the tub i ever have got, event with the fridge running my meter showed 13.4 volts at back of car usually was max of 12.6 , and i have this setup since i bought car brand new, so was not a tired alternator i was comparing it too.
i will post if there is any changes, but no blown fuses no engine light and tech stream show no issues.did over 200 ks today after install.

[TOYZX]

Nice one mate! I assume it bolted straight up?

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[Blackdelux]

straight fit looks no different, they come out on 150 prado 1KD
and hiace minibuses with dual aircon, there also another listing on ebay for 315 delivered 100 amp or 130 amp options, one i bought had two year warranty and i could pick up today as i live in Adelaide,and he did better for cash any way.

http://www.ebay.com.au/itm/191909279952 ... EBIDX%3AIT
http://www.ebay.com.au/itm/191943449879 ... EBIDX%3AIT

[DeadlyBeast]

Edit: I see you have found the below thread

that genuine 130amp alternator is very good value. However be warned. fitment of this unit to a hilux will cause damage to wiring and then the alternator. I have seen the aftermath of this personally. The wiring will require modification to handle the extra current.

These 130amp alternators where fitted to hiaces with dual air systems from the factory

http://www.newhilux.net/forum/viewtopic.php?f=11&t=9685&start=40
Banshee knows his sstuff

Do us a favour and please do let us know how you go in the months to come

[bansheebuzz]

its only a matter of time before you blow the 100 amp fuse, when you do your alternator will become open circuit and fry itself. Wiring harness between battery and alternator NEEDS upgrading.

[Sparksy]

Is there anything else required in addition to wiring between battery and alternator?

[Blackdelux]

update,
130 amp denso/toyota genuine hiace alternator, no modification to fit it .

still no issues.

i do have dual batteries, may help take up extra amperage,
my auto elecy i got it from said he "sold and fitted dozens to hilux owners never had complaint"
so far

[martynvella]

Funny how some people just cant be warned.

The first time you push that alternator to its max the fuse WILL blow, it isn't a matter of soaking up the volts, it wont produce current until it is demanded, then it will and that is when the problem will arise.

Have you got a dc dc charger or just a vrs or similar, a dc dc charger will limit the draw on the alternator but a vsr wont, run the aux battery down too far when the starting battery gets a bit old or dodgy and it will happen.

I have seen several of these fuses blow with the standard alternator in the pilbara when tradies leave the engine idling with the AC on full tilt, the headlights are on automatically and a rotary beacon as well, the alternator cant cover the load so the battery is going backwards at idle, after a few hours give the engine a rev with full load still on and the current spikes and there goes the fuse.

It does and will happen, do yourself a favour and do the wiring mod too.

[johnwood]

after a few hours give the engine a rev with full load still on and the current spikes and there goes the fuse.It does and will happen, do yourself a favour and do the wiring mod too.

How long does it take you to change out the fuse?
If its the one I think it is, the long/big/copper busbar looking one its not a 5 minute job, looks like its a hour or two, and not something you can get off the shelf from supercheap?

[martynvella]

after a few hours give the engine a rev with full load still on and the current spikes and there goes the fuse.It does and will happen, do yourself a favour and do the wiring mod too.

How long does it take you to change out the fuse?
If its the one I think it is, the long/big/copper busbar looking one its not a 5 minute job, looks like its a hour or two, and not something you can get off the shelf from supercheap?

Your right, it is an expensive part, up around the 80 to 100 dollar mark depending where you are and I have not changed one out, normally have a stock of caterpillar spares on the sites I work on so fit a 100 amp cat fuse and holder and connect it in, never seen one of those blow, could be a different rating with slower characteristics.

[Blackdelux]

im no auto leccy but my understanding of basic electrical is this.

a fuse can have 200 amps on one side, and only if only what is being drawn thru the fuse is over 100 amps will the fuse blow, so generally a fuse is there to stop the issue down line ie a set of head lights arcing out and drawing too much power hence the fuse blows to protect the wiring and power supply not vice versa

my question to those who have had this 100amp fuse is what was being drawn thru it for it to blow? and according to your post were they not running standard alternator when they did blow? which i beilieve is rated at 80 amps? if so how did this fuse blow??

i do have VSR switch to second battery and fridge in back that are all independent of 100 amp fuse that is for power delivery to car circuit.

to those who do know the hilux power circuitry better than me, dose the alternator feed power directly to battery? and then to main fuse box or split it to fuse box and battery directly from alternator.


Diagram
https://drive.google.com/file/d/0B4h5LT ... sp=sharing

[martynvella]

That 100 amp fuse is there to protect the alternator in case of reverse polarity. It carries full output current of the alternator, no matter where it goes be it the battery or to other loads, everything coming out of the alternator goes through it, unless you have picked up the supply for your aux battery directly from the alternator.

Also the ratings on things have a tolerance, meaning it could be plus or minus sometimes up to 10% so if the alternator is a little higher than the rating and the fuse a little lower whats going to happen? But in your case you know your alternator is rated higher than the fuse.

If you push your alternator hard enough you will blow it, but don't worry about it, your confident enough to ignore, even argue with at least two auto electricians, so everything must be ok.

I must have been imagining having to repair several of them.

[Blackdelux]

Hi Marty
how do i best safe guard this system?
can i buy an uprated fuse link? or should i just carry a spare?

http://www.ebay.com.au/itm/Fuse-Fusible ... 2218956718

this diagram seems to show a direct 100amp connection to battery and a then fuse link on reverse????
my vsr to second battery simply runs of + on start battery

https://drive.google.com/file/d/0B4h5LT ... sp=sharing
extract from
http://www.tuningconcepts.com/Cars/Hilu ... iagram.pdf



"Postby bansheebuzz on Wed, 14 Dec 2016 8:14 +0000
its only a matter of time before you blow the 100 amp fuse, when you do your alternator will become open circuit and fry itself. Wiring harness between battery and alternator NEEDS upgrading."
How ???

am here to learn not to preach. im a glazier not auto leccy

[martynvella]

You need to identify the cable at the fuse box that comes from the alternator, disconnect it and extend it to where ever you can mount a 150 amp fuse, then run a cable from the other side of the new fuse to the battery side of the old fuse.

I would suggest you get a sparky to do it.

[Blackdelux]

Hi marty
https://drive.google.com/file/d/0B4h5LT ... sp=sharing

are you able to look at diagram i believe this show alternator going directly to battery, which i thought was the case in most traditional car power setups? show no fuse between alternator and battery??
is this how you read diagram there other links iv posted above for full documents.
which would mean my batteries are both being charged thru direct Non fused current from alternator.

im still wondering (not doubting) how 100amp amp blows on mining cars ( were they drawing to much power thru that fuse/junction box rather than from positive on battery? ), were there other issues when you replaced fuse? after the fuse or just that there had been so much current draw thru it for so long?
i ve read before i think banshee made comment that when alternators when they are on way out they overvoltage? were any of these issues on cars you worked on?

[martynvella]

Hope your a better glazier than you are a sparky, how much longer are you going to go on with this.

Take the advice or don't, up to you.

[TOYZX]

Over voltage has nothing to do with current draw across a fuse man!

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[Blackdelux]

"Postby martynvella on Mon, 13 Feb 2017 7:24 +0000
Hope your a better glazier than you are a sparky, how much longer are you going to go on with this.

Take the advice or don't, up to you"

ive asked questions with regards to your experience in these repairs none directly answered, in the hope of being educated.
i always explain to the apprentice the 'reason why' he doesn't do something, and some times even listen to what he is saying to better understand how he perceives the situation.

i have given you some diagrams to look at ( as i thought your opinion would help me) because my stupid brain shows me that the the toyota diagram points to the fact the alternator directly charges to the battery and the 100 amp fuse delivers power to the car not to the battery, i asked you to verify this ?? and asked you to help me understand why the cars you've worked on have blown this fuse when the alternator is rated less than the fuse??
as toyzx just pointed out you need current draw across the fuse to blow it!

why would my car that has been engineered by the biggest car manufacturer in the world draw more power if nothing else is added after the 100 amp fuse. unless something failed?

i like to learn, not just follow

[flip9]

Maybe this diagram from a gen7 would be of some help. Im no pro so i could be very wrong here.

Alternator output (A7) goes into the fusebox and splits into two. The ALT fusible protects the battery fully, while the AM1/2 fusibles protects the cars circuit side.



So in a nutshell i believe what Martyvella means is to run a thicker fused wire so that more amps can reach the battery while still maintaining the standard fusebox protection.