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Why would my vacuum pump run? [message #300349]

Mon, 09 May 2016 15:34

armandminnie

Messages: 864
Registered: May 2009
Location: Marana, AZ

Karma:

Senior Member

I have a JC-4 aux vacuum pump and I have heard it running a little when driving very slowly and cold. I have a vacuum gauge and it is showing 15-18 inches so the engine is providing plenty of vacuum. The brakes work fine and I cannot make it happen by applying the brakes repeatedly. I think the vacuum sensor on the pump may be acting up. What do you all think?

Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
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[Message index]

		Why would my vacuum pump run? By: armandminnie on Mon, 09 May 2016 15:34
		Re: [GMCnet] Why would my vacuum pump run? By: powerjon on Mon, 09 May 2016 18:46
		Re: [GMCnet] Why would my vacuum pump run? By: Neil on Mon, 09 May 2016 19:19
		Re: [GMCnet] Why would my vacuum pump run? By: Emery Stora on Mon, 09 May 2016 19:16
		Re: [GMCnet] Why would my vacuum pump run? By: powerjon on Mon, 09 May 2016 22:10
		Re: [GMCnet] Why would my vacuum pump run? By: GMC.LES on Tue, 10 May 2016 09:54
		Re: [GMCnet] Why would my vacuum pump run? By: Hal StClair on Tue, 10 May 2016 14:57
		Re: [GMCnet] Why would my vacuum pump run? By: GMC.LES on Wed, 11 May 2016 08:51
		Re: [GMCnet] Why would my vacuum pump run? By: powerjon on Tue, 10 May 2016 15:59
		Re: [GMCnet] Why would my vacuum pump run? By: GMC.LES on Wed, 11 May 2016 08:58
		Re: [GMCnet] Why would my vacuum pump run? By: Tony Cook on Wed, 11 May 2016 16:08

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