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Old 02-28-2020, 04:31 PM #16
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Originally Posted by TheDurk View Post
For plugs and connectors, sure. But for battery terminals and ground points, good old Vaseline is a conductor and works great. Dielectric does not conduct electricity. I keep both on my lube shelf.
Yes lots of folks use vasoline.

The only drawbacks to it is it swells rubber and is flammable.

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Last edited by brillo_76; 02-28-2020 at 04:34 PM.
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Old 02-28-2020, 07:36 PM #17
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Originally Posted by brillo_76 View Post
If the original alt has 180k to 200k on the odometer. Your brushes will be very warn out anyways. As that's about the average length of time for both the alternator and the starter brushes. [ well that's what I seen in all the Toyotas I owned and worked on for 30 years] it's an average though sometimes its longer and sometimes its slightly less.


All the posters gave excellent advice. I am sure you soon will have your cause.

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+1 on the brushes. I first replaced brushes as a preventive measure when my 1988 4Runner was around 200k miles, on the advice of the dealership parts guy. Have done it on 3 vehicles since, and 200k is a good time to do it. May not be advice for your current problem, but something to keep in mind.
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Old 03-01-2020, 12:10 PM #18
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Alternator brushes added to the list along with a thorough test of the unit.

Turns out my wiring harness and connections from the battery back has a ton of corrosion in it with the insulation swelled to 2x the normal size, so I'm replacing that, which is not particularly cheap to do as it turns out.

This seems my likely culprit but then maybe not, at any rate it would have been a problem down the road if I didn't get to it now.
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Old 06-11-2021, 06:31 PM #19
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Yes, I am familiar with this problem. Last year, my car also started to stall frequently due to electrical problems. Sometimes I had to start the car again several times a mile. My friend, who's from https://gordonpowers.com.au/suburb/electrician-blacktown/ helped me deal with this problem. I thought at first that it was a grounding problem. But it turned out that the alternator needed fixing. That is, it did not generate enough electricity to keep the truck from stalling. My friend helped me fix this problem and also fixed the ground on the truck. Perhaps such problems happen because the master deliberately spoils the truck so that you can return to it again. I advise you to find a good master. Bye and good luck
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Old 06-12-2021, 03:09 AM #20
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A little tip for an alternator failure: Over the past 8 years I've had the battery terminal fail (stalled randomly), the cable corrode (stalled randomly and did occasional goofy things), and the alternator poop out (The first time it happened I thought my poor little Dusty ('99 LTD) was possessed. Engine cutting in and out, ABSL, CEL, speedo bouncing all over the place, lights going on and off). At the time I was doing about 80 on a typical Texas 2-lane in the middle of nowhere. Coasted in to a graveyard, of all places, and quickly found I had no cell reception. Thankfully, remembered a trick from my slew of old Chevys and tapped (not smacked) the alternator with a hammer several times. She fired right up like nothing happened and took me home. Hopefully none of y'all experience that but, if you do...
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Old 06-12-2021, 07:32 AM #21
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I would keep the alternator as a part to at least inspect for brush wear, if not outright replacement.
I had the intermittent power fluctuations, ABS light symptoms.
Tightened the battery terminal clamps, replaced battery. It was good for a while, but the symptoms came back. It was a faulty alternator.
Local dealerships said 1 day for delivery of an alt, but I couldn't have the vehicle out of service. Went with an independent shop that could put in a Duralast brand alt the same day.
They had to replace the Duralast 3 times over the course of 3.5 years. After the 2nd time, bought an OEM alternator for the inevitable failure.
I would recommend getting a price quote from either Rockauto for an OEM alternator or one of the Toyota dealerships that does online parts orders and seriously consider buying an alternator in advance.

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Old 06-12-2021, 01:45 PM #22
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Some aftermarket brands are better than some. Seems like lately most have gone downhill on reliability in favor of max profits for the re builder.
When time came for my alt replacement, Denso from Rockauto was the unit of choice for me. No issues for years now.
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