Thread: Vacuum pump
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Old 08-29-2013   #26
zig
 
Join Date: Jul 2013
Location: Ft Worth
Posts: 50
Default Re: Vacuum pump

I wanted to provide an update to the vacuum solenoid issue that I was dealing with in case someone finds this in a search. I went through 3 solenoids that were similar in form, fit and function but were housed in a different mount. All the solenoids leaked down at various rates and caused the vacuum pump to kick on from 3 to 10 seconds. I then ordered an AC/Delco solenoid part number 1997222 I found online. It holds a vacuum with no leaks. So in my experience, the newer solenoids do not hold a vacuum. If you can find a NOS part, that is the route to go. If anyone finds a new solenoid that does not leak down, please let me know. I would much rather spend $25 vice the outrageous price of an NOS part.
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1991 ZR-1 #85, 21,000 miles
1991 Z28, L98, 62,000 miles
1996 Collector Edition Convertible, 87,000 miles
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