View Single Post
  #4  
Old 09-14-2009, 08:51 AM
brcidd's Avatar
brcidd brcidd is offline
AF Enthusiast
 
Join Date: Jul 2005
Posts: 2,312
Thanks: 2
Thanked 173 Times in 171 Posts
Re: 1989 silverado A/C problem-wrong alternator?

This chattering is typical of a bad cycling switch (on accumulator) they did this in late 80's early 90's--switch can't decide to be on or off--- goes into rapid rapid contact closer- unplug switch and jumper connector to prove it..It is completely unrelated to your alternator....
__________________
Automotive A/C Engineer with:
'99 IH 4700 Toy Hauler
(2) '95 GEO Prizms both maroon
'99 GMC Yukon
'95 Chev 3500, 454 Dually Crew Cab- 145k miles-
Wife's Camel trailer puller.
'94 Astro- 370k miles
'94 Firebird Formula- 5.7L 180k miles- gone-
'92 Chevy Lumina Van 3.8L 264k
'86 GMC S-15 - 2.8L 154k
'87 Buick Park Ave . 187k
'86 Buick Park Ave 3.8L 199k miles- gone
'77 Chevy Vega- 2.5L 175k miles gone but not forgotten
'68 Camaro 396 4 spd RS/SS -72k miles-
Reply With Quote