Vacuum pump running - Page 2 - ZR-1 Net Registry Forums

PhillipsLT5 · 12-02-2014

Quote:

Originally Posted by Paul Workman

Third time was the charm on mine for that nonsense: Strike THREE! Now it NEVER comes on! (& You can guess why not!

)

yep, not on car, in parts bin, works for me also

Kevin · 12-02-2014

giving serious consideration to that.

GOLDCYLON · 12-02-2014

And never looked back

XfireZ51 · 12-03-2014

Quote:

Originally Posted by Kevin

giving serious consideration to that.

You can do this without removing anything if you want to keep things reversible. Just strap the secondaries open, and make the prom calibration changes for the mod. If the motor is modded, you would likely need to tweak the fueling tables for part throttle and cruise operation.

Kevin · 12-03-2014

Quote:

Originally Posted by XfireZ51

You can do this without removing anything if you want to keep things reversible. Just strap the secondaries open, and make the prom calibration changes for the mod. If the motor is modded, you would likely need to tweak the fueling tables for part throttle and cruise operation.

I've talked with Mark Haibeck about this a few times and I'm really considering it. The cost is what's holding me back.

Dynomite · 12-03-2014

I have one ZR-1 with secondaries removed and three ZR-1s with secondaries functioning perfectly.

The TRICK to a fun to have secondary system is a vacuum system with no leaks.

The TRICK to diagnosing/fixing/having a vacuum system with no leaks is Blocked TB Coolant at the Injector Housings. Eliminated IH Housing and Throttle Body (TB) Coolant system Tricks

With TB Coolant blocked you do not need any sealant on the Plenum Gasket and Plenum Removal is essentially a ten minute no mess maintenance function. Removing Plenum (including the 10 minute Plenum Removal)

Most Importantly, Removing the Plenum with TB Coolant Blocked will not involve Coolant in any regard (removal or filling Coolant).

Once the Plenum is Removed vacuum leaks can easily be found and corrected.
Checking for Vacuum Leaks TIPS

Having an Operational Secondary Full Power Switch

12-02-2014	#12
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,633	Re: Vacuum pump running giving serious consideration to that. __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

12-02-2014	#13
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,153	Re: Vacuum pump running And never looked back __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

12-03-2014	#16
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,790	Half the fun is having a functional Full Power Switch I have one ZR-1 with secondaries removed and three ZR-1s with secondaries functioning perfectly. The TRICK to a fun to have secondary system is a vacuum system with no leaks. The TRICK to diagnosing/fixing/having a vacuum system with no leaks is Blocked TB Coolant at the Injector Housings. Eliminated IH Housing and Throttle Body (TB) Coolant system Tricks With TB Coolant blocked you do not need any sealant on the Plenum Gasket and Plenum Removal is essentially a ten minute no mess maintenance function. Removing Plenum (including the 10 minute Plenum Removal) Most Importantly, Removing the Plenum with TB Coolant Blocked will not involve Coolant in any regard (removal or filling Coolant). Once the Plenum is Removed vacuum leaks can easily be found and corrected. Checking for Vacuum Leaks TIPS Having an Operational Secondary Full Power Switch __________________ Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 12-05-2014 at 09:51 AM.