Hi Dr. Phil,

No need to apologize. You have family and children and career and a house that needs some gutters cleaned as the leaves and the haycorns (acorns as they are call in the Hundred Acre Wood) collecting in the gutters and downspouts!

And the other work your 1988 Volvo 240 may need. Sometimes you just have to simultaneously multitask on them rear wheel drive Volvo service events.

As Machine Man Phil says with the exterior scrapers. Excellent guidance for quality exterior 240 window scrapers at a good price at Dave Barton's site. Terribly sorry not to make mention of Dave Barton. I forgot at the time. Sorry. Though the window scraper material should be as durable and of the same quality as Dave Barton's offerings.

Yeah, iPd really jacks up on the mark up sometimes. Like them made in Mexico Sachs (Boge) damper shocks. (When I bought two Sachs / not boge front strut cartridge dampers for the 1990 li'l red 240 DL wagon, they were priced the same as the always good Bilstein (B4) Touring, yet not nearly or farly the Bilstein quality.)

The DeoxIT-D has a compound that both melts or dissolves (if you will) the corrosion that prevents electrical flow and sometimes forms heat like at some relay sockets connector and the fuse ends in the fuse panel as well as the wire harness terminators at the back side of the fuse panel. Any connector will benefit. Deoxit-D is dielectric and ironically allows current to flow freely at any (mechanically) bonded.

The alcohol in the mix is a carrier for the compound (or chemical) in DeoxIT-D. The alcohol evaporates leaving the corrosion-dissolving / inhibiting to act on the corrosion.

Yet there are times when corrosion, like at the power window switch, may not be corrosion. It may be the switches had there fair share of soda or coffee or who know on them. The alcohol may work fine to clean away the material. Yet, in what I'd encountered, it's corrosion, that may be caused by dumped soda or coffee, or age, or humidity or varying temperatures or merely the action of current spanning the bonded metal interface, or a combination.

I was helping a guy with his late 80s 740 in Spokane at a junkyard as he was having running problem. I had a spray bottle of the DeoxIT-D. We traced the issue to the fuse and relay board in the center console bottom hidden by the ashtray. He smoked heavily and the ashtray was full and nasty. So, we found the fuel injection relay was getting warm, yet were able to remove it, a generous spray of the DeoxIT-D, and restore the relay (I may have had a known good spare I gave him.) And voila. As I sort of get crazy to ensure no issues, I went through all wire harness connectors and went through the relays and connections at the relay / fuse board platform thingy (Though I said he need to remove it and inspect and service the underside.) His 740 (non Turbo) was working way better, yet I left the bottle of the DeoxIT-D spray can behind, or he may have procured it. I have yet to replace it. Like my Bentley manual that was then already old helping a guy with his 1986 240 that reused to lube the hinges to the point of the driver front door hinge position stay breaking.

I'm unsure, yet you may be able to use some sort of container that has a spray or a straw to deliver the DeoxIT-D. DeoxIT is not harmful to most plastics. Though you'll have that 5-ounce can for a while. Leave it sealed. Maybe in a heavy zip lock bag? So it does not evaporate.

I guess DeoxIT-D uses alcohol as the solvent carrier. I forget.

I have some contact cleaner that you would use on the old tv click tuners and pots like volume controls I mean to try on the 1992 240 GL power window switches at the front of the parking brake console above the carpet. An awful place to put these when the dash console has space. Meant to relocate these to the center dash console next the unused cigarette lighter some three or five years ago.

Welp, glad that works for you.

What about the window motor regulator you partially disassembled?

Yeah, Happy Thanksgiving. 13 years straight alone for me. I despise the helladayze.

Questions?

Hope that helps.

With Cle Ellum, WA Dreams. Loves the snow. Loves loves, loves the clean snow that smells of the clean ocean in mighty WA-state. or Norway. Or maybe Switzerland.

Precipitation in the middle of midwest is well polluted when it gets here, usually. No real winter here anymore. No snow. Volvo 240 loves snow.
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