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Franks89-911's Avatar
 
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Cloudy headlights on the inside of glass? How to fix?

I have an 89 Carrera Targa. With I guess "H5" headlight ass'y? Honestly, still a noob on many things and frankly IDK.

Anyway, the *inside* of my left headlight is cloudy/foggy. I tried removing & cleaning it with rubbing alcohol and that seemed to work temporarily, but the problem has returned.

See pic; hopefully you can see the difference b/t headlights. Searched forum and didn't find a discussion on this precise issue. Any help/advice is appreciated as always, especially how to stop this permanently.


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1989 911 Carrera Targa 3.2L, all stock
78k miles (as of Dec 2023)
"The Machine"
Old 05-13-2016, 08:19 AM
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When you removed the assembly, did you notice if the rubber drain plug and the rubber grommets for the wiring were in place?

If not then the culprit could be moisture entering the bucket and accelerating the oxidization.
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Old 05-13-2016, 08:32 AM
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The root cause of your issue is that the desiccant pack at the bottom of the light is past its life and can't absorb any more moisture. You can do an ugly repair by heating it to 200° for a couple hours. It will distort it so it is ugly but it will dry it out. Otherwise you can just replace them.

I've seen people use alcohol and dry rice (to act as a scrubber) and slosh it around to clean off the film. I'm not a big fan so I got a small bamboo stick, heated it with a heat gun and bent it into a curve. On the end I tied a small rag ball to scrub with. A vigorous scrubbing with alcohol and it was truly clean.
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Old 05-13-2016, 08:32 AM
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Desiccant Packs, Really? Wow just learned something.

Can't he just put some packs in the bucket or behind the assembly?
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'85 Carrera Targa
Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace
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Old 05-13-2016, 08:35 AM
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I had the same problem; fog would return.

Then I invested in H4's, maybe the best improvement I've made. VASTLY better pattern than wretched H5's and much brighter. Strongly recommended.
Old 05-13-2016, 12:02 PM
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Quote:
Originally Posted by DRACO A5OG View Post
Desiccant Packs, Really? Wow just learned something.

Can't he just put some packs in the bucket or behind the assembly?
Jim, here is what they look like. Well, the flat one is what they look like. If you put one in the oven at 200* you'll get the curved one. It should still work, but won't screw down. I don't really recommend that trick, maybe a lesser temp. but 200* is too much. Other threads i had read said 250* which i thought was too much, so reduced the temp. Still made artwork out of it after about 10 minutes.

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Old 09-11-2016, 08:30 PM
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Five years ago I used the alcohol-soaked-rag-on-the-end-of-a-chopstick method on my 87 with the same problem. Turned out great and still looks really good. I did not mess with the desiccant. The cleaning is a pretty easy job.

Ken
Old 09-12-2016, 08:46 AM
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I had the same problem and it was the gasket between the headlight assembly and body. I have H4's so maybe H5's are different. It's like $2 from our host.
Old 09-12-2016, 09:06 AM
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Similar to above - I used windex. Pull the desicant packs, remove bulbs. Then I sprayed windex in through the bulb opening. Stuck a square of microfiber towel inside. Worked it all over - including reflector - using the long handle of a wooden kitchen spoon. Go easy, work through all of the fluting and edges. Went over second time with fresh towel lightly misted with alcohol. Let it dry for a while before assembly
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Old 09-12-2016, 11:30 AM
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if alcohol is not enough and you need something abasive, you might consider using kosher salt -- table salt is not alcohol-soluable
Old 09-12-2016, 11:36 AM
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Quote:
Originally Posted by darrin View Post
if alcohol is not enough and you need something abasive, you might consider using kosher salt -- table salt is not alcohol-soluable

One more reason to discard the "H" poison and revert to factory intentioned sugar scoops and just walk away from the pain.

Fools and their money.............

Just spoke with Erwin Komenda. He is pissed off.

He says, "Like, H4's are gonna make you a better driver."

If I'm lyin', I'm dyin'.

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Old 09-12-2016, 02:00 PM
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