Problems - Page 2 - ZR-1 Net Registry Forums

XfireZ51 · 11-05-2013

Have a spare starter if needed.

GOLDCYLON · 11-05-2013

Make a project out of it. Replace the plugs. Clean out the galley hole etc.

Z06scentair · 11-05-2013

Quote:

Originally Posted by GOLDCYLON

Make a project out of it. Replace the plugs. Clean out the galley hole etc.

Thats my thinking. What plugs are recommended?

Schrade · 11-05-2013

Quote:

Originally Posted by XfireZ51

Have a spare starter if needed.

How 'bout my Black carpet riser? Snappics? Price?

......................

( sorry to boost your thread here Z06...

)

Z06scentair · 11-05-2013

Quote:

Originally Posted by Schrade

How 'bout my Black carpet riser? Snappics? Price?

......................

( sorry to boost your thread here Z06...

)

No problem brother....hoping oneday to have an LT5 under my name. one post closer

Z06scentair · 11-06-2013

Well I found my antifreeze and vacuum leak. It was actually only the plenum bolts that were all finger loose.

By the time I found the loose bolts the plenum was almost off. So I figured I would go ahead and pull and replace the plenum gaskets. It was pretty clean underneath. I wiped everything down and took the air horn, throttle body and plenum apart for cleaning.

The throttle body was flaking paint on top around the coolant plate, so I ordered gaskets and a can of paint from Jerry's and everything arrived today. I remember someone else mentioning the pcv valve rubber gromet so I ordered it tonight. Mine was swollen to the point it was loose on both valves.

The wires look to be in good shape and the plan is to NCRS this car, so I will leave the stock wires!

As for the coils? Is there an easy way to check them?

All the vacuum lines look very good as do the connections.

It took me twenty minutes to remove the plenum, which I didnt think was too bad for my first time!

Dynomite · 11-07-2013

Before you tighten down the Plenum (with Plenum tipped up in front) and ALL vacuum lines, and DIS module connections in place....check your vacuum systems. I am killing two birds with one stone here as I posted this for Schrade also a few minutes ago.

With all vacuum lines connected, turn key on and listen for vacuum pump to shut off. If it does not shut off, start at the closest vacuum line to the vacuum pump disconnecting the line and holding your finger over the end. If the pump shuts off the leak is on other side of that. Go to next fitting and do the same until you are past the leak wherein the vacuum pump will NOT shut off. You have now located the leak.

Also check your HVAC and Cruize Control Vacuum System (check ALL connections). Also check your EVAP Purge system connections (charcoal canister which is under drivers side headlight on a 90'.....Behind Passenger Side Rear wheel on 91'). That single small vacuum port under front of plenum facing rearward (90' only) is for the Evap Purge System. The second larger vacuum port on drivers side lower front of plenum is the main vacuum line for the Charcoal Canister. The second Vacuum port right next to that Charcoal Canister port is your PCV Vacuum port.

With the key on, ground the pink wire in the green connector (third from drivers side) on ECM. This will activate the Secondaries which you can watch with the plenum tipped up in front before you bolt it down. This after you are sure you have NO vacuum leaks in the Secondary System.

I promised GC I would not mention any modifications to the New Guys .....but you should eliminate TB coolant so you do not have to mess with coolant every time you remove the Plenum......DO NOT TELL GC I suggested this. You will then be able to remove the Plenum in 10 minutes

Vacuum Systems 90' and 91' (Secondary and Cruize/HVAC)

GOLDCYLON · 11-07-2013

Quote:

Originally Posted by Z06scentair

The throttle body was flaking paint on top around the coolant plate, so I ordered gaskets and a can of paint from Jerry's and everything arrived today.

This is a common problem. Most of us bypassed the TB to avoid this in the future.

Z06scentair · 11-07-2013

Quote:

Originally Posted by GOLDCYLON

This is a common problem. Most of us bypassed the TB to avoid this in the future.

Not sure this would pass code of ethics with NCRS

Z06scentair · 11-07-2013

Ok so I decided to change the plugs. Found a set of original plugs and went to install. Once I got to number 7, the plug cylinder and plug boot was covered in oil?

The plug was tight so that kind of ruled out blowby? I wiped it out real good and installed the new plugs, took a small paint brush and wiped a small bead of dielectric grease inside all the plug wires as well as the coil pack studs!

11-05-2013	#11
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Problems Have a spare starter if needed.

11-05-2013	#12
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,120	Re: Problems Make a project out of it. Replace the plugs. Clean out the galley hole etc. __________________ 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

11-06-2013	#16
Z06scentair Join Date: Sep 2013 Location: Charlotte NC Posts: 654	Re: Problems Well I found my antifreeze and vacuum leak. It was actually only the plenum bolts that were all finger loose. By the time I found the loose bolts the plenum was almost off. So I figured I would go ahead and pull and replace the plenum gaskets. It was pretty clean underneath. I wiped everything down and took the air horn, throttle body and plenum apart for cleaning. The throttle body was flaking paint on top around the coolant plate, so I ordered gaskets and a can of paint from Jerry's and everything arrived today. I remember someone else mentioning the pcv valve rubber gromet so I ordered it tonight. Mine was swollen to the point it was loose on both valves. The wires look to be in good shape and the plan is to NCRS this car, so I will leave the stock wires! As for the coils? Is there an easy way to check them? All the vacuum lines look very good as do the connections. It took me twenty minutes to remove the plenum, which I didnt think was too bad for my first time!

11-07-2013	#17
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,817	Check Secondary Operation Before you tighten down the Plenum (with Plenum tipped up in front) and ALL vacuum lines, and DIS module connections in place....check your vacuum systems. I am killing two birds with one stone here as I posted this for Schrade also a few minutes ago. With all vacuum lines connected, turn key on and listen for vacuum pump to shut off. If it does not shut off, start at the closest vacuum line to the vacuum pump disconnecting the line and holding your finger over the end. If the pump shuts off the leak is on other side of that. Go to next fitting and do the same until you are past the leak wherein the vacuum pump will NOT shut off. You have now located the leak. Also check your HVAC and Cruize Control Vacuum System (check ALL connections). Also check your EVAP Purge system connections (charcoal canister which is under drivers side headlight on a 90'.....Behind Passenger Side Rear wheel on 91'). That single small vacuum port under front of plenum facing rearward (90' only) is for the Evap Purge System. The second larger vacuum port on drivers side lower front of plenum is the main vacuum line for the Charcoal Canister. The second Vacuum port right next to that Charcoal Canister port is your PCV Vacuum port. With the key on, ground the pink wire in the green connector (third from drivers side) on ECM. This will activate the Secondaries which you can watch with the plenum tipped up in front before you bolt it down. This after you are sure you have NO vacuum leaks in the Secondary System. I promised GC I would not mention any modifications to the New Guys .....but you should eliminate TB coolant so you do not have to mess with coolant every time you remove the Plenum......DO NOT TELL GC I suggested this. You will then be able to remove the Plenum in 10 minutes Vacuum Systems 90' and 91' (Secondary and Cruize/HVAC) __________________ Clickable links On Iphone Touchable 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; 11-07-2013 at 02:18 AM.

11-07-2013	#20
Z06scentair Join Date: Sep 2013 Location: Charlotte NC Posts: 654	Re: Problems Ok so I decided to change the plugs. Found a set of original plugs and went to install. Once I got to number 7, the plug cylinder and plug boot was covered in oil? The plug was tight so that kind of ruled out blowby? I wiped it out real good and installed the new plugs, took a small paint brush and wiped a small bead of dielectric grease inside all the plug wires as well as the coil pack studs!