Vacuum reservoir

[maxtwms]

What does this thing actually do and if there's a leak in it or a hose going to it, will it affect driving performance? I'll promptly delete if this has been asked before. Surely it has...

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[1987 GMC Jimmy]

It’s not a bad question. It’s there to keep steady vacuum going to your accessories and to circumvent fluctuations so your cruise won’t engage/disengage repeatedly and your A/C won’t dump to the floor out of the blue and then come back to your face.

 

[maxtwms]

It’s not a bad question. It’s there to keep steady vacuum going to your accessories and to circumvent fluctuations so your cruise won’t engage/disengage repeatedly and your A/C won’t dump to the floor out of the blue and then come back to your face.

Thank you. I replaced the hose but didn't wanna fool with taking that bottom fastener out to check it. Ac seems to work fine but the hose was dry rotted all to hell.

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[1987 GMC Jimmy]

Yeah, from what I’ve seen, those hoses like to rot pretty badly. If you have a Mityvac, you should be able to pump it up to say 18” and see if it holds.

 

[maxtwms]

Oh nice. Didn't think of that

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[Rusty Nail]

If you take it out can I have it please?

**** man, I ADD those deals, don't take it off! You need it.

 

[maxtwms]

I was never gonna remove it lol

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