94 Ac compressor issues
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Relay is finding a path to ground which is through the PCM (which also drives the fan to maintain average head pressures in the 200's. I'd guess that your Control Button isn't working. Scan it and if there's an a/c request, something is probably wrong with the Panel. A bi-directional scanner would be better because that will bypass the Controls and should get it to turn off. If it's not the Panel, it's in the wiring or Relay, though with the fan Cranking, something is telling the PCM to drive the Compressor.
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 42
From: Baltimore, MD USA
Here's the flow chart to diagnose your problem.
The AC Clutch relay is located under the hood, mounted on the rear passenger side inner fender well. Color of the wires at the socket are 2 Brown wires, 1 Dark Green wire and a Dark Green/White wire.
At the compressor cycling switch the connector plug wires are a Dark Blue wire and a Dark Green/White wire or the wires could be
a Light Blue and Dark Green/Yellow wire.
The AC Clutch relay is located under the hood, mounted on the rear passenger side inner fender well. Color of the wires at the socket are 2 Brown wires, 1 Dark Green wire and a Dark Green/White wire.
At the compressor cycling switch the connector plug wires are a Dark Blue wire and a Dark Green/White wire or the wires could be
a Light Blue and Dark Green/Yellow wire.
Last edited by Hooked on Vettes; Sep 7, 2010 at 06:09 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
