I have a problem of water leaking into the cab after it rains really hard. It's coming in thru the back glass. I was gonna take it to a window shop and have them to look at it but every time It rains hard and it's coming in the cab they are not around the shop, or I forget to stop etc. I was wondering has anybody else had this problem if so give me some advice on what's causing it and how to fix it. Thanks in advance.

 

take it in, they will use a hose to find the leak.... or smoke

 

Is the water coming in through the headliner? If it is its most likely the third brake light, it happened on mine. Just take it out and put some silicone all around it and put it back on.

 

What year ranger are you running?

There are several possibel locations..

The third brake might be leaking into the cab, the weatherstripping on yoru door in the upper area might have a crack thats letting water seep down into the interior panels and moving on the path fo wherever its leaking from.. and the window, its rare.. but every now and then a small crack happens in theupper/lower seal in the window and a small space pops up.. I doubt its that one, but always worth a check

 

i had a really bad leak a year and a half ago. the third break light dripped on my amp mounted between the seats in my standard cab. sealed that and put on fiberglass fenders. now water runs down the door pillar on the front passenger side. after 8 months i've found the perfect solution: take out the edge floor board and take out that rubber seal that covers the cab-to-frame mount bolts. then simple hit the break real hard and the water will be forced forward into the open hole.

 

The third brake light leaked on mine as well and of course I leave my amp behind the seat so that was the end of that one.

 

The gasket on the third brake light gets flattened over time and the nylon nuts that hold it to the cab get stripped out. If the gasket is still in decent condition, you may get lucky and get away with just putting in new nylon nuts. If the gasket is too flat or damaged, it is time for a new light. You can get new ones for $35, or you can get an LED one which is brighter and won't need bulb replacements for around $80.

Silicone is a quick fix, but it doesn't like to come off.

Some trucks have had water leaks from the cab seams and windows too, but I am betting it is the third brake light. Silicone can be used around the cab seams and window if they are part of the problem.

On 2004 + trucks, the headrests can actually push the rear window out some on regular cabs. Ford resolved this with smaller headrests.