sounds like there is a bunch of garbage and debris built up on the
evaperator. Common thing to have happen considering the age of the vehicle
and especially if its parked under a tree alot.
> > Concerning my 90 C1500.The ac fan changes speed [ lo med
> high]but the
> > air flow from the vents seem restricted.
> sounds like there is a bunch of garbage and debris built up on
> evaperator. Common thing to have happen considering the age
> of the vehicle
> and especially if its parked under a tree alot.
I appeciate the info,what do you think my best cleaning option is?
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Thats the problem. The garbage will be on the left side of the core as you
face it from the front of the vehicle. And of course its the right side of
the core that is exposed if you remove the cover from the housing as if to
replace it. The other thing is if its debris from an Oak tree, or some
other hard wood, the leaves have a considerable amount of tanic acid
content, and over time this will eat the core(Does this sound like I have
had some personal experiance in failures of this sort, like just last summer
on my 91) You can remove the side cover from the housing and gently slide
the evap clear enough to clean it, but given the cost of a new core, I would
probably replace it, the acumulater, the orfice tube, flush the bear out of
it and convert to R-134 with the proper oil. If it has the original R-4
compressor, I would probably replace it as well with a new, not rebuilt one
from Delphi. I think I paid less than 150 for a new Delphi compressor and
clutch with the correct R-134 oil three years ago from an outfit called
Tropical International. So parts wise, you would be around 350 with a
compressor, 150 with out the compressor, a bit more if you replace the
tensioner and belt too.
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