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Car Forum / Oldsmobile Cars / August 2005

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91 olds A/C problems

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caseih - 18 Aug 2005 22:36 GMT
I have a 1991 olds 98 and the A/C is intermittent.  Sometimes it works
for 20 to 30 min and sometimes it only works for 2 min.  When I try to
troubleshoot it at home it always works.  I have taken all the wires
off the A/C pump and checked them for shorts and have found nothing.
Any suggestions.
git-r-done - 18 Aug 2005 22:36 GMT
> I have a 1991 olds 98 and the A/C is intermittent.  Sometimes
> it works for 20 to 30 min and sometimes it only works for 2
> min.  When I try to troubleshoot it at home it always works.
> I have taken all the wires off the A/C pump and checked them
> for shorts and have found nothing.  Any suggestions.

it may need to be recharged.
Shep - 18 Aug 2005 23:07 GMT
When it doen't work is the compressor still operating?
>I have a 1991 olds 98 and the A/C is intermittent.  Sometimes it works
> for 20 to 30 min and sometimes it only works for 2 min.  When I try to
> troubleshoot it at home it always works.  I have taken all the wires
> off the A/C pump and checked them for shorts and have found nothing.
> Any suggestions.
caseih - 20 Aug 2005 08:36 GMT
> I have a 1991 olds 98 and the A/C is intermittent.  Sometimes
> it works for 20 to 30 min and sometimes it only works for 2
> min.  When I try to troubleshoot it at home it always works.
> I have taken all the wires off the A/C pump and checked them
> for shorts and have found nothing.  Any suggestions.

When it does work the one side of the line is very cold and the other
is not so according to the book it should not need to be recharged.
It seems that the compressor is kicking off and not comming back on.
The previous owner had the same problem and took it in and they could
find nothing wrong with it.
git-r-done - 20 Aug 2005 08:36 GMT
> When it does work the one side of the line is very cold and
> the other is not so according to the book it should not need
> to be recharged.  It seems that the compressor is kicking off
> and not comming back on.  The previous owner had the same
> problem and took it in and they could find nothing wrong with
> it.

well thats all i can think of, i know someone that might be able to
help(my HVAC instuctor) i will have to e-mail him, as soon as i get a
reply from him i will let you know what he thinks.
git-r-done - 29 Aug 2005 23:39 GMT
> I have a 1991 olds 98 and the A/C is intermittent.  Sometimes
> it works for 20 to 30 min and sometimes it only works for 2
> min.  When I try to troubleshoot it at home it always works.
> I have taken all the wires off the A/C pump and checked them
> for shorts and have found nothing.  Any suggestions.

he said it may be the pressure switch, or some temp. control thing (i
forgot what he called it), but he said it is probably the pressure
switch.
that would be caused by there not being enough pressure to hold it
closed.
caseih - 31 Aug 2005 23:41 GMT
> he said it may be the pressure switch, or some temp. control
> thing (i forgot what he called it), but he said it is probably
> the pressure switch.
> that would be caused by there not being enough pressure to
> hold it closed.

Thanks for the info.  I am going to take it in to get it tested.

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