type44 CC question

Doyt W. Echelberger Doyt at buckeye-express.com
Fri Jul 12 14:06:42 EDT 2002

You might try looking for blockages of the air plenum that channels  air
through the system. If the air can't flow, it can't become cooled (or
heated) and the system doesn't work very well.

Leaves and debris frequently accumulates in the air plenum behind the
engine compartment.

This space can be examined from inside the cabin, or from the outside, by
lifting the hood and the bay cover.  Look up behind the glove box for a
rectangular spring-loaded trap door about 4 inches by 8 inches, and lift it
open. Inspect the space (air plenum) behind the trapdoor, using a
flashlight. You might find it totally blocked with leaves and debris. Clean
it out with fingers and vacuum the evaporator (radiator-type thing) you
find there.

If you still have that wall behind the glove box covered with fascias and
panels, you can inspect this same space from the passenger side, by lifting
the thin plastic rain protector thing over the air plenum. The space
between the wall and the evaporator is only a few inches, but you can get a
small flat vacuum cleaner nozzle in there to vacuum out most of the debris.

Doing this improved the cooling ability of my 87 5ktq.

I took out about a cubic foot of leaves.

Doyt Echeolberger

At 02:44 PM 7/12/2002 +0000, you wrote:
>Over the past few years, I've replaced everything (yup) in my '87 5kcstq's
>CC system w/new or rebuilt stuff.  Here's what it's doing now:
>*brightness of CC display changes, as if I was turning the lights on and
>off. Related to license plate light burned out? Doesn't do this in relation
>to dash lights; plus blower acts normally regardless of what display is
>doing, so it's not on/off-ing.
>*doesn't make cool air in hot weather! (hey, that sucks) I can't tell if
>it's b/c it's so hot outside that it's just wimpy, or if there's an actual
>failure/broken stuff. Reason being is that in not-quite-as-hot weather (say,
>below 80F), it seems to cool fine.
>If it is some sort of failure, perhaps a refrig leak somewhere, or interior
>or exterior temp sensor? Things to check?
>Once repaired, I may be interested in elec pusher fan on condensor...that'd
>be nice for SoCal heat waves in my black interior; plus I drive to AZ a lot
>to visit family...Hmmm [finger to chin]
>from chider at hotmail.com
>Join the world's largest e-mail service with MSN Hotmail.

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