Question about 1991 Lincoln Continental
With the car off, open hood locate A/C compressor, 91 linc bottom of engine/front side.
the serpentine belt/pulley will not move, But the center/clutch 1/2 of compressor SHOULD
rotate by hand, If Not Compressor lock-up, older compressors spin freely, ones w/less wear/new
will turn by hand, but harder to do.
If you have to replace compressor, find someone, not dealer,expensive+ they will sell you Ford
Compressor$$$$, when you find one through a friend, ONLY USE a manufactured Compressor
"Four-Seasons" aprox $220. for compressor, a new Dryer $35.00 and Orifice Tube/Filter $4.00
Advance Auto Is distributor for 4-Seasons, MAKE SURE THEY ONLY SELL U a 4-Seasons
compressor & Dryer, instead of a China/junk one.
I'am a Licensed EPA Section 609 & Universal 608 Section A/C guy, been doing this for aprox 9 years on the side. NEVER had a problem from a 4-Season Product yet.
Does your Sytem have Freon in it? good, none/small leak or big leak, big leak= lost of A/C Oil and
air in system.
When your A/C guy removes the Orfice/Filter from the A/C tubing, what is collected on the Orfice Tube/Filter will tell you what happened inside your A/C System and will let him know if you need
to Flush your A/C system internal out 1/2 way or completely or not at all.
See some fine specs of metal [like glitter] normal, square/larger chunks, compressor metal, was Orfice tube Oily/normal failure, if Dry/No Oil Present, someone forgot to add oil during low freon.
If you donot have the proper tools to do this, dont try, if you do, above should help explain what
most likely happened for the newer people.
Remember, A/C Low pressure switch during Low Freon level detected in system Should Shut A/C Compressor Off Preventing Burning up A/C Compressor, The system gets lubricated by aprox 8oz of PAG oil for Fords mixed in with the 2lbs of Freon 134-A, when the freon moves through system it lubing at same time.
People with A/C gauges, A/C unit been off for awhile, connect gauges, a difference of 4psig between
the Low gauge and High Gauge is telling, you have a restriction in your system, this restriction
is located at the Orfice Tube/Filter, what causing this, some of the above, compressor metal filings,
air/moisture left in system during last vacuum pump-down, should pump down aprox 45minutes,
Dryer Desicant bag failure, will see small black charcol looking specs all over filter surface, that before they got collect at this filter, they went through you A/C Compressor, only designed for
Vapor Freon, not trash or liquid freon.
Posted on Sep 18, 2008
Sounds like a locked-up compressor.
Posted on Aug 01, 2008
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