Is this normal? - ZR-1 Net Registry Forums

Okiedoke · 11-10-2013

Hi all,

I've been reading these forums and other sites about the ZR-1. I've finally registered because I'm really considering purchasing this 1991 ZR-1 that I've come across and was hoping you could give me some advice on this purchase. It looks and drives real nice! It pushes me into my seat even only at 4k RPM! All 16 injectors had been replaced. I did notice, however, that right at the end of starting up the engine, there's a sound of a chain for like a second. Same thing when turning off the engine. Is this normal or something to be concerned about? I had driven a different 1991 ZR-1 and don't recall hearing this sound. The only other issue I'm aware of that may be of concern is that the ABS light is on. Thanks in advance for your feedback.

Pete · 11-10-2013

Most Z's have a rattle at start up till oil pressure, No worries.
At shut down it's flywheel, all stock Z's have dual mass flywheels most will have a bit of a rattle at shut down or springs in flywheel could be getting a little weak they are over 20 years old, again no biggie,when you do a clutch change deal with it then.

For the ABS you might be able to go to Auto Zone ask them to scan it to find out if it's a sensor the rear sensors are easy to change by just taking the wheel off, fronts are build into the bearing if it's a sensor cheap fix.

Heck even if the ABS unit is bad, it won't be that hard to find a good used unit cheap.

Pete

XfireZ51 · 11-10-2013

Yes jump in by all means. The water is fine.

FU · 11-10-2013

The rattle sound's worse than it really is.
A little reading for your rattle on start up.

http://www.zr1specialist.com/HAT%20W...ers%202006.htm

GOLDCYLON · 11-10-2013

Normal and most do that.

What Jerry said on the ABS sometime just not enough brake fluid in the master cylinder will cause an ABS light as well.

Okiedoke · 11-10-2013

I'd really like to thank everyone for your responses! I really appreciate it! I haven't worked on cars before so have been apprehensive, but thought this was a great opportunity to start, especially since the seller had already put some work into getting this car in shape from being stored in a warehouse. Knowing there's so much knowledge out there and folks willing to help have really made me feel more at ease.

BTW, I just remembered there's something on the car that seems likely only aesthetic. The glass top was on and on the inside back metal frame of the top, there seem to be one strip of clear glue-like residue on the driver's side and residue with a flat broken yellow plastic piece on the passenger's side. Does anyone what this is supposed to be and whether it can be repaired or cleaned up?

Thanks!

Kevin · 11-10-2013

these aren't the cars to start learning on.

11-10-2013	#1
Okiedoke Join Date: Nov 2013 Location: San Jose, CA Posts: 132	Is this normal? Hi all, I've been reading these forums and other sites about the ZR-1. I've finally registered because I'm really considering purchasing this 1991 ZR-1 that I've come across and was hoping you could give me some advice on this purchase. It looks and drives real nice! It pushes me into my seat even only at 4k RPM! All 16 injectors had been replaced. I did notice, however, that right at the end of starting up the engine, there's a sound of a chain for like a second. Same thing when turning off the engine. Is this normal or something to be concerned about? I had driven a different 1991 ZR-1 and don't recall hearing this sound. The only other issue I'm aware of that may be of concern is that the ABS light is on. Thanks in advance for your feedback.

11-10-2013	#2
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,680	Re: Is this normal? Most Z's have a rattle at start up till oil pressure, No worries. At shut down it's flywheel, all stock Z's have dual mass flywheels most will have a bit of a rattle at shut down or springs in flywheel could be getting a little weak they are over 20 years old, again no biggie,when you do a clutch change deal with it then. For the ABS you might be able to go to Auto Zone ask them to scan it to find out if it's a sensor the rear sensors are easy to change by just taking the wheel off, fronts are build into the bearing if it's a sensor cheap fix. Heck even if the ABS unit is bad, it won't be that hard to find a good used unit cheap. Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage Last edited by Pete; 11-10-2013 at 01:42 PM.

11-10-2013	#3
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,669	Re: Is this normal? Yes jump in by all means. The water is fine. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

11-10-2013	#4
FU Join Date: Mar 2004 Location: Found Member Posts: 4,346	Re: Is this normal? The rattle sound's worse than it really is. A little reading for your rattle on start up. http://www.zr1specialist.com/HAT%20W...ers%202006.htm __________________ Frank Urbo. NCM Lifetime member # 982 Registry Founding # 237 Last edited by FU; 11-10-2013 at 11:08 AM.

11-10-2013	#5
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,153	Re: Is this normal? Normal and most do that. What Jerry said on the ABS sometime just not enough brake fluid in the master cylinder will cause an ABS light as well. __________________ 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

11-10-2013	#6
Okiedoke Join Date: Nov 2013 Location: San Jose, CA Posts: 132	Re: Is this normal? I'd really like to thank everyone for your responses! I really appreciate it! I haven't worked on cars before so have been apprehensive, but thought this was a great opportunity to start, especially since the seller had already put some work into getting this car in shape from being stored in a warehouse. Knowing there's so much knowledge out there and folks willing to help have really made me feel more at ease. BTW, I just remembered there's something on the car that seems likely only aesthetic. The glass top was on and on the inside back metal frame of the top, there seem to be one strip of clear glue-like residue on the driver's side and residue with a flat broken yellow plastic piece on the passenger's side. Does anyone what this is supposed to be and whether it can be repaired or cleaned up? Thanks!

11-10-2013	#7
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,633	Re: Is this normal? these aren't the cars to start learning on. __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"