Interior body rust???

Strider

New member
**opps, I meant exterior rust on the inside of that frame. Not interior rust. ��

Afternoon!

I bought a 2005 4Runner with 130k. I live in CO but this thing had spent time in Minesota I believe. Because of that, there is some rust underneath on the frame and other parts. Nothing to worry about, but more than we see in CO. Since we'll keep this car for another 20 I thought I'd go ahead and scrape underneath all over, spray on rust stopper and then spray undercoating to it and high temp paint in other areas like on the exhaust. Probably not necessary, but easy to do.

So here is my question as I am new again to Toyotas since the early 90's... With rain on the road the car will come back and in the garage on the floor there are small drops of very rusty water. This is right between the front and back door on the passenger side about 8-12 inches from the outside in the floor. From being under there, looks like it is where there are holes in the frame that stretches from front to back.

Anyone else ever dealt with this? I'd figure it'd make sense to get a hose on a bottle of rust stopper and spray it in there pretty good, wait a few days and do the same with undercoat or paint. Plugging it seems to be unwise as the water would sit in there.

Thoughts?
 
Last edited:
Register to hide this ad
Yes, the closed box sections of the 4Runner frame (like the crossmember under the transmission) can rust from the inside out.
 
What have you all done to address this? Just spray some rust killer in there? Rheem it out with a big wire brush on a drill, garage it forever with fans blowing on it, fill it with Q-tips, comb with a fine tooth these threads, or just not sweat it.

ANY help would be great as I haven't come across this before.

Thanks all.
 
What have you all done to address this? Just spray some rust killer in there? Rheem it out with a big wire brush on a drill, garage it forever with fans blowing on it, fill it with Q-tips, comb with a fine tooth these threads, or just not sweat it.

ANY help would be great as I haven't come across this before.

I put rustproofing paint on the outside of the box beam under the transmission. Several years later, I could put paint on the inside of a portion of that box beam, because the bottom plate had simply rusted away.

Toyota paid most of the cost to replace my frame last December.
 

Members online

Forum statistics

Threads
278,304
Messages
3,554,041
Members
248,016
Latest member
Advally Service

Trending content

Back
Top