sewebster Posted December 11, 2011 Share Posted December 11, 2011 Where are you reading 19V? Sounds like you might have a voltage regulator problem. Link to comment Share on other sites More sharing options...
DarkDragon Posted December 11, 2011 Share Posted December 11, 2011 Where are you reading 19V? Sounds like you might have a voltage regulator problem. at first it was reading it from the battery with my multi-meter. anyways, i did a full charge system check with the help of the fsm. all wire are fine. got voltage where it needs to be. got continuity through all the wires. tried to find the 211m plug for the circuit breaker, but i had no luck. where is it? ------------------------------- just got back from advance auto from testing my 2 day old alternator. it failed. this blows. back to napa for a new one. is there something that i should have changed before i get another and blow it as well? thanks Link to comment Share on other sites More sharing options...
nunya Posted December 11, 2011 Share Posted December 11, 2011 new parts bring fail just like old ones do. New don't = perfect all the time, hopefully you just got a bad one Link to comment Share on other sites More sharing options...
DarkDragon Posted December 12, 2011 Share Posted December 12, 2011 new parts bring fail just like old ones do. New don't = perfect all the time, hopefully you just got a bad one good to hear. i know that new parts come defective sometime. just sucks when i have to claim my warente on it. Link to comment Share on other sites More sharing options...
Tungsten Posted December 12, 2011 Share Posted December 12, 2011 ^ The EXACT reason why I extracted one out of a actual Nissan. Genuine factory parts that come with the car are usually (but not always) the best. That was a 150k something miles Maxima and I took the alternator to a highly reputable re-builder. I put in a lot of effort to make sure that the part worked from the first try. Link to comment Share on other sites More sharing options...
ahardb0dy Posted December 12, 2011 Share Posted December 12, 2011 (edited) I personally wouldn't bother swapping from a 60 or 70 amp to a 90, not worth the effort for 20 amps. When I do mine I'll be looking for the 125 amp alt from the Maxima. I put the 110 amp in my 90 sentra and all I had to do was make a one bracket and swap the plug. Here is a chart I made comparing a few different alternators: Edited March 25, 2012 by ahardb0dy Link to comment Share on other sites More sharing options...
DarkDragon Posted December 12, 2011 Share Posted December 12, 2011 started a new thread with pics in wd21 section with my problems with pics. Link to comment Share on other sites More sharing options...
Tungsten Posted December 12, 2011 Share Posted December 12, 2011 I personally wouldn't bother swapping from a 60 or 70 amp to a 90, not worth the effort for 20 amps. When I do mine I'll be looking for the 125 amp alt from the Maxima. I put the 110 amp in my 90 sentra and all I had to do was make a one bracket and swap the plug. Here is a chart I made comparing a few different alterantors: If you want to spend the extra effort then that's fine but the best part about switching to the 90A one is that it's still an upgrade and a direct bolt on. Those extra 20A will make the difference if you convert to an e-fan. Link to comment Share on other sites More sharing options...
RedPath88 Posted May 23, 2012 Share Posted May 23, 2012 Is there an exact write up for the 1996-1999.5 R50's..... i hope so... Bit late, but this may help some others Install: 125A Quest Alternator on 96-01 Pathfinder Link to comment Share on other sites More sharing options...
sailone32003 Posted June 11, 2012 Share Posted June 11, 2012 I would highly recommend for anyone who is running a e-fan or offroad lights to upgrade their alty because this not only causes havoc with your electrical system, but the tranny can be affected as well and can lead to damage, like what happened to me pssd. Tools required: Ratchet 12 mm socket 10 mm socket Phillips head screw driver The process to install the new alternator is pretty straight foward, and a direct bolt on. First thing you want to do is look for your donor, the alternator that would fit into your 86-95 pathy would come from a 85-94 maxima. Make sure that you are getting one from SOHC maxi and not a DOHC, especially with the later year maxi's. Here's the diffrence: As you can clearly see the mounts have diffrent angles. The other between the two is that the DOHC generates 5 more amps than the SOHC. This is the diffrence between a pathy alty and a maxi alty: The maxima alty is slightly more beefier than the pathy. Ok, if you decide to get your donor alty from a J/Y, then having it tested out at autozone or checker is recommended. First thing's first. Disconnect the positive lead on the battery. Unbolt the tensioner bolt with the 10 mm socket and with the 12 mm socket unbolt the bolt holding the alty in place to the tensioner to remove the belt. unbolt both the two bolts that hold the alternator to the engine block with the 12 mm socket. I would recommend to remove the back bolt first, and then remove the front bolt, while holding the alty with one hand. Once you have removed all bolts, wiggle the alty slightly to remove from block. Disconnect the pos lead to the alty with the 10 mm socket and remove the ground with the screwdriver. It the screwdriver does not help, then you may want to use a smaller socket, I think it was a 7mm, don't remember. Remove last plug in harness. Take the both alty's to a shop where they can swap the pulley for you, unless you already have air tools. Once the pullies are swapped, take the maxi alty and install all factory wiring again. Start by reinstalling all engine block mounting bolts, do not tighten yet. Install the tensioner to the alty, along with the belt. Tension the belt acocrdingly so it is nice and snug. Tighten all mounting bolts, reconnect the pos lead on the battery and start the pathy! Here's some pics of the alty installed: Over all the swap should take about 30 mins or less. I'm pretty impressed with the upgrade. The tranny problem i had started when I installed an e-fan and ended when I upgraded. Ok just put in a alty for a 88 maxi in my 93 pathy pulley doesnot line up and rubs on ac belt what gives????? Link to comment Share on other sites More sharing options...
Leo94 Posted June 11, 2012 Share Posted June 11, 2012 How about a z32 300zx alternator similar to THIS its 120a. Link to comment Share on other sites More sharing options...
Tungsten Posted June 12, 2012 Share Posted June 12, 2012 They are 90A, not 120A. I don't think that one is factory or the listing is full of crap. Link to comment Share on other sites More sharing options...
Leo94 Posted June 12, 2012 Share Posted June 12, 2012 There are a few listed as "High Output" Link to comment Share on other sites More sharing options...
Tungsten Posted June 12, 2012 Share Posted June 12, 2012 Might be a modified alternator then. Link to comment Share on other sites More sharing options...
Leo94 Posted June 13, 2012 Share Posted June 13, 2012 Do you know if the z32 alternator would fit? Link to comment Share on other sites More sharing options...
Tungsten Posted June 14, 2012 Share Posted June 14, 2012 It might, looks like the mounts are correct. RockAuto shows them as 90A though so beware. You may as well just go with a Maxima one. Link to comment Share on other sites More sharing options...
vf24renegade Posted August 30, 2014 Share Posted August 30, 2014 Back to life... I have some observations. 1. A 20 amp increase is only one reason to do the swap. Another is that the Maxiam alternator is only 2/3 the cost of the 70 amp pathfnder unit. So if you need to replace one ...... 2. The instructions are good except he leaves out some crucial details. First, the alternator just doesn't 'come out' The tensioner bracket has to be loosened and swung out of the way to drop the alternator out. 3. It's difficult to get the bolts lined up when installing the alternator. There is very poor visibilty and everything with the back bolt has to be done by feel with a plate from the suspension in the way. 4. I had the alternator go out on my 94 so I took the one from my 95 to replace it with. There is subtle difference you need to be aware of BEFORE installation. The stud for the battery wire is larger on the 95 than the 94 so the lug will need to be replaced with one larger. (I'm assuming my 95 alternator was OEM. The label said it was a 170 and made by Hitachi, remanufactured. ) 5. Also, it mentions 10 mm bolts. ALL the bolts on the 94 alternator I had were 12 mm. No 10's. Also, the grounging wire screw can be turned with an 8 mm socket as well as a phillips screw driver. So, installation was much worse than removal. Don't expect it to be as quick and easy as the removal might be. I need to get my Maxima alternator now and the installation should go smoother now I know what to expect. 1 Link to comment Share on other sites More sharing options...
BigLuke1 Posted August 11, 2016 Share Posted August 11, 2016 Back to life... I have some observations. 1. A 20 amp increase is only one reason to do the swap. Another is that the Maxiam alternator is only 2/3 the cost of the 70 amp pathfnder unit. So if you need to replace one ...... 2. The instructions are good except he leaves out some crucial details. First, the alternator just doesn't 'come out' The tensioner bracket has to be loosened and swung out of the way to drop the alternator out. 3. It's difficult to get the bolts lined up when installing the alternator. There is very poor visibilty and everything with the back bolt has to be done by feel with a plate from the suspension in the way. 4. I had the alternator go out on my 94 so I took the one from my 95 to replace it with. There is subtle difference you need to be aware of BEFORE installation. The stud for the battery wire is larger on the 95 than the 94 so the lug will need to be replaced with one larger. (I'm assuming my 95 alternator was OEM. The label said it was a 170 and made by Hitachi, remanufactured. ) 5. Also, it mentions 10 mm bolts. ALL the bolts on the 94 alternator I had were 12 mm. No 10's. Also, the grounging wire screw can be turned with an 8 mm socket as well as a phillips screw driver. So, installation was much worse than removal. Don't expect it to be as quick and easy as the removal might be. I need to get my Maxima alternator now and the installation should go smoother now I know what to expect. Link to comment Share on other sites More sharing options...
BigLuke1 Posted August 11, 2016 Share Posted August 11, 2016 I have taken all the bolts out and wires are disconnected. I still can't get the alternator out...any help would be appreciated Link to comment Share on other sites More sharing options...
Dozzerwd21 Posted January 11, 2020 Share Posted January 11, 2020 On 12/16/2010 at 4:44 PM, schickdog said: My 88 is going to require taking the spacer off the pathy alt shaft and cutting it from 1/2" to 1/4" and putting it on the maxi alt. Not exactly a "true bolt on" for me, but nothing is ever easy. However, one week until Big Bend and some serious wheeling. Ok that's what I'm worried about.. I only have basic hand tools no grinders or anything like that besides a drimmel or hand saw.. how would to make a spacer??mines a 87 pathy with the fan on pulley. Link to comment Share on other sites More sharing options...
Dozzerwd21 Posted January 11, 2020 Share Posted January 11, 2020 On 11/27/2011 at 1:38 PM, Tungsten said: No, it was from a SOHC VG Maxima. Upon further research it looks like if you own a 70amp alternator then the pulley will swap directly into the 90amp unit. The people that have to make adapters are the ones swapping the pulley from a 60amp unit because of the external cooling fins. Yes the 87-89 seem to have the external fan pulley and the 90-95 have the bolt on pulley.. does anyone have pics of the adapter they made and from what?? Link to comment Share on other sites More sharing options...
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