Help with Condensation problem...

I don't drive my car very often, but when I do I notice condensation on the back lid of the trunk inside as well as the fender wheel wells inside. Is this a common problem with a 1990 caprice 9c1? How do I fix this problem?

Common problem. Replace the gasket.

Thanks....Guess I'll get myself a gasket.

yea i had a leak in my 88 and i found the leak and siliconed it and it hasnt leaked since but where is the gasket at??

yea i had a leak in my 88 and i found the leak and siliconed it and it hasnt leaked since but where is the gasket at??

The gasket is that big black rubber ring along the edges of the opening.

Another way to rid the moisture in the trunk before,(or even after you replace the gasket,) is the use of a desiccant. These are usually made up of silica gel and absorb many times their weight in moisture. You probably have seen one form or another in use in the packaging of electronics, pharmacueticals, and even shoes.They are the little packets that fall out when you open the package. Some people use these when storing their vehicles for any length of time in humid conditions, or where there may be wide temperature swings, to control moisture buildup within their vehicle.

Another way to rid the moisture in the trunk before,(or even after you replace the gasket,) is the use of a desiccant. These are usually made up of silica gel and absorb many times their weight in moisture. You probably have seen one form or another in use in the packaging of electronics, pharmacueticals, and even shoes.They are the little packets that fall out when you open the package. Some people use these when storing their vehicles for any length of time in humid conditions, or where there may be wide temperature swings, to control moisture buildup within their vehicle.

A little trick is to use cat litter. It makes a good dessicant.

I dont want to soak up the moisture.. I want to STOP it

I had a similar problem with my white '90 9c1. Problem fixed itself when I replaced my CB mount with one that better fit the hole (I think it sealed better). Anyways, after the change, no more moisture problem in that car until I lost it in the accident. So my guess would be, there is some kind of leak which allows the moisture (or moist air) into the trunk and allows it to accumulate and condense.

If it is a leak, it may not be the gasket. A '89 Caprice 9c1 I was looking at lately had the same moisture problem in the trunk, but the gasket was in perfect condition, so the leak must have been somewhere else from what I can gather (although I couldn't figure out where).

I had a leak in my trunk at the front corners. I swear it was leaking through the joint. The gasket was fine so I just sealed that joint with RTV sealent. Problem fixed.

stop growing marijuana in the back of the car =)

I dont want to soak up the moisture.. I want to STOP it
Actually you do want to soak up any remaining moisture even after you seal any leaks. Any moisture that is trapped and remains behind even after the repair can cause a host of problems including mold, mildew and rust, even in the areas of the trunk you can't see. It's a two-step process. 1) seal the trunk to stop moisture from getting in, and 2) remove what moisture is already there previous to the repair.

Thats ture, never thought of it