So voltage does meander a bit as the regulator gets it back to 14ish.
Seen over 15 with the beans off idle, but it comes back down soon enough. Drops to 13ish when the beans stop and recovers. Occasionally hangs 13ish when rad fan comes on. Was doing some wierd 12ish nonsense while running through the trans positions to check fluid other day.
Alt gets just as hot as the engine though too after a good drive.
Could be possible the new alt is faulty maybe
MR2 Alternator Upgrade?
- SinusoidalTendencies
- Top Notch Member
- Posts: 151
- Joined: Thu Sep 06, 2018 12:06 pm
- My tercel:: 87 4wd wagon
Re: MR2 Alternator Upgrade?
I don't always learn my lesson.
But when i do, it's the hard way.
But when i do, it's the hard way.
Re: MR2 Alternator Upgrade?
If your voltage is reaching 15v, it may be enough to trigger the charge lamp signal. I tried a new internal regulator on my faulty alternator, but the charge voltage remained high. It was also smoking hot while idling, so I did not run it long. The new regulator may have been bad, or could have been wiped out by a faulty diode in the rectifier assembly. I finally decide to purchase a remanufactured stock alternator, and all is good now.
Heres a link to some similar issues from a MR2 site:
https://www.mr2oc.com/threads/alternato ... em.427775/
Heres a link to some similar issues from a MR2 site:
https://www.mr2oc.com/threads/alternato ... em.427775/
- SinusoidalTendencies
- Top Notch Member
- Posts: 151
- Joined: Thu Sep 06, 2018 12:06 pm
- My tercel:: 87 4wd wagon
Re: MR2 Alternator Upgrade?
Funny thing the fsm we got here doesn't show which pin is which on the plug.... Trying to figure out the pin layout for testing
I don't always learn my lesson.
But when i do, it's the hard way.
But when i do, it's the hard way.
Re: MR2 Alternator Upgrade?
I think this is it, looking at the alternator with plug removed...
You do not have the required permissions to view the files attached to this post.