air cond compresser

i have a 93 gmc seirra 1500 5.7 4x4 when i turn on the air condition ,the fan and the ac light comes on. the clutch on the compresser won't engage.
i tried adding freon in the low pressure side while the truck was running and the ac in the on postion,it wouldnt take the freon, and the clutch woulnt engage.
any ideas ? thanks
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Bypass the low-pressure switch and check if the compressor runs.
--
Mad-Dog
'79 Chevy K-10
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
by passed and got a shock

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
ROFL.... what the hell!!!!!!? Pull the connector off the low-pressure switch and insert a jumper wire into both contacts of the connector. Use a piece of insulated wire that is only stripped back at each end.
--
Mad-Dog
'79 Chevy K-10
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.