Rust on passenager door!

[Alexw]

Morning All!
Theres some rust creeping up the passenger side door of my '89 S2, nothing major but i finnaly got round to sorting it today. Ive just noticed though some minor bubbling rising up from the bump strip! About 4" worth, only about 1/2" upwards and barely noticable. Is this an unusual place for rust on these? Im not sure now whether to get the whole door sorted it somewhere professionally. The rust runs along almost the entire length of the bottom of the door too! Can anyone tell me how to remove the bump strips so i can check under them please? I can't find any mention of it anywhere.
Cheers

 

[Diver944]

ORIGINAL: Alexw

Is this an unusual place for rust on these?

Yes it's the first time I've heard of it there, could it be a previous repair gone bad?. Maybe the drain holes at the bottom, of the door have been blocked and water running down the inside of the door from the window seal has got trapped?

 

[Alexw]

Could you point me to a website that could help with checking that? My dad has a '83 924 - would his haynes manual be of much use or has the desgin completely changed since then?

 

[pauljmcnulty]

Take the door card off, be careful with the plastic vapour barrier as if this is removed the door cards absorb all the moisture in the door....like mine! []

You'll be able to see if there's a load of accumulated crud in the bottom of the door, or if it's been filled with something like waxoyl and not had the drain holes kept clear. With all the rain we've had I'd imagine a door with blocked holes would be sounding full of water, though, and that would not explain why the rust is halfway up and not at the bottom edge.

Poor repair is more likely, with the rubbing strip being levered off and the paint damaged underneath. I'd think that a door from a breaker would be a better bet than repair, I have two in the right colour in my garage in case i need them, £20 each on flea-bay and local enough to collect. One has all the window and associated motor etc as well, so not bad value, even if you pay to have it painted, as a repair would need anyway, and fitted.

 

[Alpine]

there is a black plastic vent on the edge of the door and with a carefully angled torch you can see through into the bottom of the door inside. You'll be able to see if the rust is surface rust or rust that has come through from inside

 

[pauljmcnulty]

there is a black plastic vent on the edge of the door

And, this vent is designed to blow air through the door and cill to keep them aired and dry. Again, points to damage from the outside....

 

[peanut]

ORIGINAL: pauljmcnulty

there is a black plastic vent on the edge of the door

And, this vent is designed to blow air through the door and cill to keep them aired and dry. Again, points to damage from the outside....

never knew that ! always wondered why the vents in the door shuts lol.[]

This is very worrying I had better check mine. I suspect that it is accumaltion of water under the strips which is slow to dry out as it is protected frm sun and air. Regular wax should help.
Another area of concern for me is the felt and rubber seals at the top of the doors . They are collecting algae because of parking under trees at home. I'll clean them out this weekend .
Also noticed some rust stains streaks from the rear cill/ wing juncture []

It never rains but it pours.

I really need to do an underbody under wing power wash to remove the salt