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06-17-2017
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#1 |
 Join Date: Apr 2017
Location: Missouri
Posts: 46
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Vacuum Pump
With the key in the On position the vacuum pump keeps running. Occasionally it stops for a second and then keeps running. Is it supposed to stop? Does this mean I have a leak?
Thanks, Jim |
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06-17-2017
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#2 | |
 Join Date: Aug 2006
Location: McLean, VA
Posts: 3,723
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Re: Vacuum Pump
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06-17-2017
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#3 |
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Join Date: Apr 2017
Location: Missouri
Posts: 46
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Re: Vacuum Pump
Thanks for confirming. Can't wait
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06-17-2017
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#4 |
 
Join Date: Dec 2007
Location: NYC
Posts: 1,188
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Re: Vacuum Pump
Make sure you don't burn out the pump I would disconnect it till you fix the leak. I seen people asking as much as 400 for the pump
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__________________
90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD" |
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06-17-2017
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#5 | |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Vacuum Pump
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__________________
Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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06-17-2017
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#6 |
Join Date: Nov 2016
Location: Norway
Posts: 397
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Re: Vacuum Pump
You should first try to disconnect the line going to the plenum from the pump, and hold your thumb over the pump side hose. Then you'll know if the pump/hose is good. Then you could try to disconnect the vac hose from the driver side of the plenum and plug the hose with your thumb. If the pump then stops, it's the check valve.
Sent from my SM-N910F using ZR-1 Net Registry mobile app
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- '90 ZR-1 |
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06-17-2017
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#7 |
Join Date: Sep 2016
Location: Ocala, FL
Posts: 899
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Re: Vacuum Pump
I had to replace a vacuum solenoid valve under the plenum. There is s thread for it. Original is discontinued But DELCO sell one one you just change the bracket. Just go bit by bit systematically.
Sent from my iPhone using ZR-1 Net Registry
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Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much. |
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06-17-2017
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#8 | |
Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,452
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Re: Vacuum Pump
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06-18-2017
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#9 |
Join Date: Dec 2007
Location: Fremont,Ca
Posts: 3,079
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Re: Vacuum Pump
The pump can be found new shipped to your door for less than $130,same pump used in a KODIAC KICK,direct bolt on for 91-95,plug is different for 1990. Anybody know the part number for the new solenoid valve?
Last edited by Z51JEFF; 06-18-2017 at 11:03 PM. |
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06-19-2017
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#10 |
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Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Vacuum Pump
Check with Jerry Downey @ Jerry's Gaskets.com
__________________
Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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