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Model Specific Questions and Info => MK2 Golf/Jetta and Audi 5k => Topic started by: Spokerider on December 09, 2019, 02:57:30 pm
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Just found a break in the 1992 Jetta 1.6TD glow plug fuse. It's that blade version of fuse held into the fuse holder by two phillips screws.
Why do these break? I don't see an obvious short anywhere on the glow plug buss bar.
I did have a water leak from bottom of windshield into cabin, that I'm hoping I have fixed. The rubber windshield molding had a small gap where it meets on the middle.....thinking rain was getting in there.
Is it possible it got into the fuse box? Damaging relay?
Or.....do these fuses just break all on their own with age / heat / vibes?
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They break all on their own from age / heat / vibes. They are super-cheap but often not available at local auto parts stores. Order a couple extra and put them in the glove box or ashtray.
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Thank you Libby,
The fuse box was bone dry......so all good there.
Will get a couple of those pesky fuses for now and wire in a better fuse box later.
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Spokerider, Do an upgrade on that fuse. From the autoparts store you get one of those holders with a cap on it. Get one with at least 12 gauge wire. Then do a remove on the old box and solder and sleeve with shrink tubing on the new one. That way you can replace the fuse should it pop again with one you can buy anywhere nowadays. Those thin tin strips were a good cheap working product but we have developed better ones for todays cars.
You might be time ahead going over the fuse box under the dash if you think you had a water leak in there. Never hurts to pull and clean terminal ends every so often.
Just my take.
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The original body caulking on the firewall has a tendency to age and crack, letting water in. Pull the plastic water shield in front of the windshield wiper assembly, inspect and reseal the dried caulking. I use a "syruppy" water proofing called Tectyl 506 by Chevron, I think.
Lay it on all of the seams that you can get at. That area is a water way in the rain.