Moisture / haze on inside glass of auto meter gauges?

[Svashtar]

Just noticed that the inside top of my trans temp gauge has some kind of very slight fogging / moisture, almost looks like oily haze actually? Very light tiny droplets; the gauge is still readable, but not as much as the real OP and Volts gauges. It's like looking at a couple of the numbers through very lightly frosted glass.

I know it was clear before; all I can think of is the colored plastic sleeve over the bulb directly behind it? Maybe when it first heated up it off gassed something, and I just now am noticing; you really have to look for it.

There's no way to get the lens off that I can see; thinking about pulling the bulb and spraying canned air which should get around to the front, but that's assuming it can evaporate. I pulled the gauge and rotated the bezel so the tiny droplets are more at the bottom.

I know I paid less than $30 for this thing; cheapest I found today was $67, so they have gone up quite a bit.

Anyway, just wondered if anyone else has run into this.




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[Spectragod]

Mine has liquid in it too.....

https://uploads.tapatalk-cdn.com/20170911/06e0eb03174a4b6b029634575fd9bb 5c.jpg


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[Svashtar]

Gee, no kidding! Sounds like you got some defective ones. You should drill a hole through the center of them to drain them out, then put them in the oven for a couple of days, low temp of course as you don’t want to damage them. Can’t be too careful!

I turned my lens a quarter turn to get the hazy area towards the bottom, then shot some canned air through the back bulb hole a couple of times. That dispersed most of it.

The problem I think is that the oil and voltage gauges only light up when the lights turn on, but the trans temp gauge light is on all the time the key is on. I figure the bulb off gassed the rubber on the different color sleeve I have over the bulb, and hazed one area of the lens after a while.


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