Part 192 062 007 - Voltage regulator?

[finkelstein]

The particulars: '79, FI

She ran great all last season until the weekend I put her away-
Easy start>high idle> sputter to off.
Under load, would hesitate and act fuel starved.

Well, winters are cold up here in far, far upstate NY and my barn garage isn't heated. Plus I have a four year old, and a job; an essential health care job. So I didn't get to even attempt to solve this problem.

Went out to check FI grounds- Double relay looks well grounded at fire wall, FI resistors look ok, connections clean.

Moving over to R side of firewall and I note the brown wire that accompanies Red, green, and blue into the back of the box mounted to R of firewall is melted (insulation) and to boot melted into the red wire (through insulation).

I removed the plug out from the box (plug part no 021 971 841),
removed box (part 192 062 007).

Is the box a voltage regulator? The wire loom travels to a Y. One end goes through the firewall- seems like the other to the alternator.

I haven't removed wire loom as of yet. Thought I'd get some thoughts.

[mikewire]

Based on your description and the part #, I'd say yes that's your voltage regulator.

I'm a bit concerned about the melting wires and boot (connector?). Somewhere you have a short to ground.

A picture is worth a 1000 words...if you have 'em.

Also, there's wiring diagrams in the technical section.
_________________
-Mike

@countdowngarage
@bigskyeuro

1972 VW Kombi 9 Passenger Deluxe w/ 2.0L F.I. VWAC swap
1965 VW Beetle Deluxe Bahama Blue

[ImAddicted]

I've just dealt with bad alt-VR wires this weekend. Yes, you have an issue. I agree, need to look for where the short is that caused the brown (alt ground) and the red (D+) from the alt melt.

As for your running issue, while not getting juice will cause issues (obviously), that sounds more fuel\air to me than electrical. I'd be looking for vacuum leaks while you are in there.
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1979 Transporter (sold)
KC1MUR

[finkelstein]

A little more digging this afternoon- Yes, its a voltage regulator. A very pricy voltage regulator. Prices for new BOSCH are upwards of $150 US.

So...is it going to be ok to simply crimp female connectors to my wire leads?

Can I bench test this regulator? If so, how?

[ImAddicted]

[busdaddy]

Here's a recent thread with tests: https://www.thesamba.com/vw/forum/viewtopic.php?p=9634037#9634037

Regulators are cheap in the classifieds and rarely fail, any 72-79 bus one will do.
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[ToolBox]

[finkelstein]

Update to OG post:

The issue was in fact vacuum leak- the 90 elbow at the bottom of the AAR had a crack. Not a big crack mind you, but enough to nearly trounce my season.
A thin little run of duct tape solved it until I can source a replacement.

I think the original of to ALT ground/D+ was simply old age and brittle wires. I replaced a section of the ALT ground and the D+ via splice on each until I can recreate the ALT harness. Replaced the voltage regulator with a Hella as recommended; I also picked one up off the classifieds for good measure.

As always, thanks for the insights fellas.