===========================
I don't really know where to start on this one .
like always - start by checking for codes -
if no AC related codes -
check the AC pressures -
post BOTH the high side and low side pressures -
Weird A/C problem
Well, I just replaced the a/c relay , erased all the codes and expected all to be well , But no ! Now the a/only blows cold on the passenger side not the drivers side ? Could there a blend door stuck or vacuum leak. I don't really know where to start on this one . Thanks for any help or ideas on this one . Hope its not to ugly
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I don't really know where to start on this one .
like always - start by checking for codes -
if no AC related codes -
check the AC pressures -
post BOTH the high side and low side pressures -
======================Finally got back to this Sunday AM. And I have a few more facts, Outside temp about 70 degrees . Passenger side vents are reading 50/52 degrees. and drivers side vents reading 80/82 degrees. No codes are showing up and I have a high side pressure of 175 /200. I cant do a low side pressure because my brother drove over the low side , when he used it last , TX Bro. Any additional ideas would be appreciated TX.
high side pressure seems about right for 70's ambient -
duct temp - when set to 60* - medium speed -
should be 42 or lower -
your driver side temp is above ambient -
passenger side is below ambient -
the Eldo still uses a mix of vacuum and electrical controls -
can't remember which controls what - between temp and mode -
I suspect a vacuum leak -
but am surprised there are no codes -
----------------
could be a mix door sticking -
try exercising the temp up to 90*
and down to 60* several times -
----------------------------Thanks , for the diagrams Ranger , I was looking for something like this in the FSM but couldn't find it .After" exercising "the system like Basscatt recommended , I noticed that in the air conditioning mode the drivers vents are not blowing as hard as the passengers , in the heat mode they appear to be equal . Momentarily I thought that It was working but then it went back to not working . Is there anyway to physical check and move the blend doors by hand to check for movement . Also is it possible for a screw or something to fall down a vent get in there and mess things up . I've had the dash pad off so who knows . TX again for all the help.
I noticed that in the air conditioning mode
the drivers vents are not blowing as hard as the passengers ,
in the heat mode they appear to be equal
don't confuse the TERMS within the climate control system -
MODE DOORS controls WHERE the air blows from -
regardless of temperature -
MIX DOORS control TEMPERATURE -
regardless of the MODE -
----------------------
the Eldo never got the upgrades/improvements to the CC system-
that the Deville and Seville got -
no manual MODE control - and still vacuum operated -
it is quite possible you have vacuum leaks messing stuff up -
=====================Finally got back to this over the weekend . I checked the incoming vacuum and found it to be around 16 Hg . I checked the colored vacuum hoses with a vacuum gauge and found them all to hold vacuum' I still need to see if a actuator is stuck . So where do I go next ? Vacuum solenoid or the programmer. I still have no codes showing. High side pressure is still around 200. Is it possible to have correct high pressure and be short on R134a ?
High side pressure is still around 200.
Is it possible to have correct high pressure and be short on R134a ?
high and low pressures work together -
and are BOTH relative to ambient temp -
high pressure alone is almost useless -
likewise - low pressure alone isn't much help -
============================Looks like I will need to buy a new set of gauges! Ill keep working on this as time permits. Tx.
Mountain 8205 - $56 - with free shipping -
http://www.amazon.com/Mountain-8205-R-134a-Manifold-Couplers/dp/B000JFHNG0
very high quality set -
nice 6' long hoses -
quick connect couplers for both high and low sides -
found a set on ebay for $46 - with shipping -
http://www.ebay.com/itm/Mountain-MT...349?pt=LH_DefaultDomain_0&hash=item462c561f5d
1 - 5 of 19 Posts
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