Vaccuum leak in fan switch?
10-27-2003, 04:35 PM
#1
Advanced
Thread Starter
Vaccuum leak in fan switch?
While the engine is running, I hear a hissing sound coming from around the fan/ heater/ ac switches. The local vette shop guy told me this was likely a vaccuum leak. He claims that the switches in there often go bad.
He reccommended replacing the vaccuum switch and the compressor switch (GM # 9348049, #9348045). Does this make sense?
My fan also does not work. He claims that the compressor switch, which is for the AC, also works the fan- and this switch being faulty could cause the fan to malfunction. Does this make sense?
Thanks for any help!
Matt :skep:
He reccommended replacing the vaccuum switch and the compressor switch (GM # 9348049, #9348045). Does this make sense?
My fan also does not work. He claims that the compressor switch, which is for the AC, also works the fan- and this switch being faulty could cause the fan to malfunction. Does this make sense?
Thanks for any help!
Matt :skep:
10-27-2003, 04:56 PM
#2
Race Director
Member Since: Mar 2001
Location: Living in the Hartland
Posts: 11,322
Likes: 0
Received 1 Like
on
1 Post
Re: Vaccuum leak in fan switch? (80Matt)
Might just be a hose came loose. The actual plug end of my hose connections to the controller broke at the holders so I used a small zip tie to hold it tight to the controller, hiss went away.
[Modified by Fevre, 5:18 PM 10/27/2003]
[Modified by Fevre, 5:18 PM 10/27/2003]
10-27-2003, 05:17 PM
#3
Team Owner
Member Since: Dec 2000
Location: Swords Check/Saws Check/Clubs Check/Claws Check/Hatred Check/Anger Check/Murmaid Check/Murder Check
Posts: 24,906
Likes: 0
Received 0 Likes
on
0 Posts
Cruise-In IV Veteran
Cruise-In VI Veteran
Re: Vaccuum leak in fan switch? (80Matt)
While the engine is running, I hear a hissing sound coming from around the fan/ heater/ ac switches. The local vette shop guy told me this was likely a vaccuum leak. He claims that the switches in there often go bad.
He reccommended replacing the vaccuum switch and the compressor switch (GM # 9348049, #9348045). Does this make sense?
My fan also does not work. He claims that the compressor switch, which is for the AC, also works the fan- and this switch being faulty could cause the fan to malfunction. Does this make sense?
10-27-2003, 09:58 PM
#4
Le Mans Master
Re: Vaccuum leak in fan switch? (80Matt)
The vacuum switch that controls the heater defroster valves is a seperate and different thing than the electrical fan switch. It is common for the vacuum control to leak vacuum, and it can be heard in that area. What happens is that there is a plastic rivet in there that it pivots on, and that rivet will break. I just replace the plastic rivet with a pop rivet. The only thing that you have to be carefull about is not to pull the rivet up too tight and deform the rubber part of the valve.
