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LGAFF
10-09-2010, 04:02 PM
Should this hold vacuum without the power key on signaling the ECM?.....I tested it by putting vac on the Solenoid and it will not hold vacuum.
VetteMed
10-09-2010, 05:13 PM
Lee, I think you have to plug one of the holes, and then it should hold vacuum? I think it's something like 2 out of 3 should hold vacuum? I had one go bad on my #1147 and it was not holding vacuum under any circumstances. I wish I remembered more, sorry.
LGAFF
10-09-2010, 07:28 PM
Where do you find replacements?
Paul Workman
10-09-2010, 08:27 PM
Secondaries...SECONDARIES??? WEEE DOAN NEED NO STEEEKING SECONDARIES!!!

I tell ya...it'll run like a bat outta hell without them and drivability will NOT suffer! I'm just sayin!

http://i185.photobucket.com/albums/x220/6PPC_bucket/tech%20files/ZR-1008.jpg
http://i185.photobucket.com/albums/x220/6PPC_bucket/tech%20files/ZR-1009.jpg

Come n take the plunge! You won't regret it! (Marc H's chip is a dandy!)

P.
VetteMed
10-09-2010, 09:00 PM
I think I found my replacement on ebay from Jim Butler Chevrolet. But like Paul, I'm now running (well, not running right now...) with no secondary butterflies.
Z51JEFF
10-09-2010, 11:55 PM
I think I found my replacement on ebay from Jim Butler Chevrolet. But like Paul, I'm now running (well, not running right now...) with no secondary butterflies.

Thats where I got mine.There are 2 designs the difference being the filter.The early design take a flat filter and the later solenoid has a nipple for a slip on filter.You can still get the filters from the dealer.