Alternator recommendations?

Steve M

Well-known member
Mar 11, 2005
107
2
Looks like the 20 year old alternator is only out putting 40amps
Car is a 98 D1

What replacements are recommended?
Don't need anything fancy - the stock one has a label
for 100amps and has served me well

Thx in advance
 

robertf

Well-known member
Jan 22, 2006
4,778
354
-
The ones from rockauto work well enough, though I've never had a rover alternator charge higher than 13.9v while D2 alternators seem to hit 14.2-14.4 consistently. Its an odd footprint so there isn't anything else that bolts up without custom brackets.
 

discostew

Well-known member
Sep 14, 2010
7,706
1,015
Northern Illinois
The ones from rockauto work well enough, though I've never had a rover alternator charge higher than 13.9v while D2 alternators seem to hit 14.2-14.4 consistently. Its an odd footprint so there isn't anything else that bolts up without custom brackets.

Go with Will's used one. No question. After market alternators for these cars are usually a problem.
 

Levi

Well-known member
Jul 27, 2004
559
26
Cheyenne, WY
Save your old one and have it rebuilt and then keep the one from Will for a spare. I had mine rebuilt about 15 years ago and it's still going. I've never had good luck with chain store alternators no matter what vehicle.
 

p m

Administrator
Staff member
Apr 19, 2004
15,617
837
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La Jolla, CA
www.3rj.org
... or, you can buy yourself bearings and regulator, and rebuild it yourself in forty minutes' time.

Disclaimer: it took me a long time to find a regulator for serpentine-belt alternators, and IIRC I bought mine from BPUtah.com . It is more expensive than a used alternator, but, at least, you have a little longer life expectancy.

One nice way to go about it is to buy a used alternator, and rebuild both - so you'll have one good unit in the truck and one on the shelf.
 

best4x4

Well-known member
Mar 1, 2015
595
72
Beaumont, TX
Slap in a P38 95-98 GEMS alternator and call it a day. I have had very good results with alternators/starters made by Parts Player. I installed a P38 GEMS Parts Player alternator into my 98 D1 LSE and it went 3 years of flawless service up to me selling it, and I haven't heard a complaint from the new owner. When I bought my 98 D1 LSE the previous owner had slapped in a unit from Auto Zone and it lasted maybe 2 months before it died on me.
 

Grenade

Well-known member
Oct 8, 2015
111
6
Vegas
... or, you can buy yourself bearings and regulator, and rebuild it yourself in forty minutes' time.

Disclaimer: it took me a long time to find a regulator for serpentine-belt alternators, and IIRC I bought mine from BPUtah.com . It is more expensive than a used alternator, but, at least, you have a little longer life expectancy.

One nice way to go about it is to buy a used alternator, and rebuild both - so you'll have one good unit in the truck and one on the shelf.

I did this as well, as I've got the 95 which has a different regulator than the other D1's.

Has worked very well, but may upgrade to a P38 next time in the JY.