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Does anyone know where the "Cowl Access Plug - RH" shown as Item #7 in the picture below actually fits into our trucks?
How do I get to the open hole this plug is supposed to fill? Through the cowl? Through the cab?
On my truck, I found this plug lying free (unattached) at the bottom of the drainage cavity behind the passenger side kick-panel access door.
I can't figure out where in the truck body this plug is supposed to fit. I have looked through the factory manual and can't find a picture that shows where it goes.
The part # on the plug itself is: E0TB-10020A50-AA if that helps.
If you remove the cowl, the plug fits a hole in the cab sheetmetal below it... I kinda thought it was on the driver's side but it's been several years since I've been in there and I guess it very well could be on the passenger side kinda near the antenna.
If you remove the cowl, the plug fits a hole in the cab sheetmetal below it... I kinda thought it was on the driver's side but it's been several years since I've been in there and I guess it very well could be on the passenger side kinda near the antenna.
hmmm, so to get to the "cowl access plug" one has to FIRST open up the cowl?
Maybe a relevant question is: was the body hole this plug fills meant to provide access to something in the cab through the cowl, or vice versa?
Maybe the other (non-cowl) side of the body hole this plug fills lives in the cab up near the heater core?
IIRC it's right around the area where the antenna cable goes, maybe it allows access to that... but, remember, it's been several years for me at this point....
The cowl does have to come off to replace it in place. Most likely that rubber has shrank over the years and that's why it fell out.
As the cowl covers that area pretty good, I never bothered putting mine back in place and never noticed anything different with air flow into the cab as the cab air intake is located close to that cover plug.
I found the same plug in the same location as you have described. I was never able to figure out exactly where it goes. For over a year, the plug has been sitting in my Pile-O-Ford-Parts (not to be confused with my Pile-O-Jag-Parts, Pile-O-Corvair-Parts, or Pile-O-******-Parts). I have not noticed any ill effects with my truck. Heating and AC is fine, no water collecting on the floor, etc.
I found the same plug in the same location as you have described. I was never able to figure out exactly where it goes. For over a year, the plug has been sitting in my Pile-O-Ford-Parts (not to be confused with my Pile-O-Jag-Parts, Pile-O-Corvair-Parts, or Pile-O-******-Parts). I have not noticed any ill effects with my truck. Heating and AC is fine, no water collecting on the floor, etc.
Interesting. Does your truck get wet regularly (rain or washing the truck)?
I also get no observed water on the floor. But I do have a little fogging when using the defroster and this fogging doesn't smell like coolant to me. So I figured my fogging might be due to this plug being missing, allowing some occasional water into the HVAC vent conduits (I park in a carport and rarely drive the truck in rain, but do wash the truck from time to time). Or alternatively, my heater core might just be slow-seep leaking a bit.
I will check the heater core and search for the opening this plug was meant to fill.
It covers the cavity just ahead of the A-pilar box.
Hi Jim, well it appears you are right (I'm not surprised) - IF this diagram from the 1986 Factory Manual shows what I think it might.
See diagram below, see arrow in diagram. If this is where the plug fits, then it appears the relevant aperture is in the inner fender skin, on the cowl and/or cab side of the firewall skin. If I am interpreting the diagram correctly.
I'm on my phone so your pic is small but the cavity is above/infront of where the hinge plate bolts.
When I had my cowl off a couple of months ago to reseal I noticed how hard and shrunken that cover was.
I looked down inside and didn't notice anything I could do in there.
Does my truck get wet regularly? Stop it, you're killing me. Look at my signature. I live in the western part of Oregon, aka the wet side. When people say it rains a lot here, they aren't kidding. My little town is on the slopes of Mt. Hood, about 1000' above Portland. So even on the rare day when it's not raining in Portland and they're just socked in with heavy clouds, it's raining at my place...
Consider me like the Eskimos who supposedly have many words for snow. Only in my case, I have many words for rain. (Insert joke here about those words not being printable.)
So all seriousness aside, my truck has lived outside since at least 1992, when I purchased it. It was good to see that picture showing where the mystery plug goes. But in all the time it's been missing on my truck, I've seen no ill effect.
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Look at my signature. I live in the western part of Oregon, aka the wet side. When people say it rains a lot here, they aren't kidding. My little town is on the slopes of Mt. Hood, about 1000' above Portland. So even on the rare day when it's not raining in Portland and they're just socked in with heavy clouds, it's raining at my place...