LJ78 Alternator Problem?

[digitalbuck]

The windshield wipers on my Prado slow down dramatically when the vehicle slows down. The A/C also stops blowing cold when the vehicle slows down. (The A/C doesn't blow as cold as it should ever, even though it's been converted to 134a and is fully charged, it just does better at speed).

Wondering if there is a problem with the alternator? Voltage regulator? The AC Compressor may be going also, but the windshield wipers slowing down is a sign of something.

Thoughts please? And thank you.

 

[GTSSportCoupe]

The windshield wipers on my Prado slow down dramatically when the vehicle slows down. The A/C also stops blowing cold when the vehicle slows down. (The A/C doesn't blow as cold as it should ever, even though it's been converted to 134a and is fully charged, it just does better at speed).

Wondering if there is a problem with the alternator? Voltage regulator? The AC Compressor may be going also, but the windshield wipers slowing down is a sign of something.

Thoughts please? And thank you.

My electrical has been doing that since I bought it, but has not got any worse. My A/C is the same as yours too. Annoying stuff that I'll eventually fix.

One of the guys on here bought a Corolla alternator spec'ed for higher current output and swapped the guts into his Prado alternator housing. He says that fixed all his problems. I think I'll do the same at some point; seems like the way to go. Here is the link to the post: My LJ78 build thread...

 

[jblueridge]

If you are lucky enough to have an auto electrical shop near you they can test the alternator and rebuild it if needed.
Voltage regulator too, if it is a separate unit.
The place thst used to be here tested for free.