Cruise control not working - ZR-1 Net Registry Forums

Dream car 90 · 08-29-2013

New to registry I just purchased a 1990 zr1 and the cruise control is not working .Where do I start ?

scottfab · 08-29-2013

There is a large diaphragm above the battery.
Check the vacuum hose that runs to it.
It gets brittle being just above the battery and can
develop a leak.

If that seems ok, with the car idling pull in on the diaphragm.
The car should rev.

From there if all is ok then you need to get a code reader or
scanner and read the error codes out and tell us what they are.
Places like Autozone will do it free.
Else we can point you at a procedure that you can read them out
on the dash by shorting to pins together.
Welcome to the group. Be patient. There are many things to learn
if you are willing.

Dream car 90 · 08-29-2013

Ok Thanks !

GOLDCYLON · 08-29-2013

Quote:

Originally Posted by Dream car 90

New to registry I just purchased a 1990 zr1 and the cruise control is not working .Where do I start ?

Check to make sure your brake switches are centered on the brake pedal arm. If they are off centered the Cruise will not set.

-=Jeff=- · 08-29-2013

also verify the vacuum ball at the left front by the headlight is connected

Franke · 08-29-2013

There is also a cruise fuse in the main fuse block. 3 amp.

GOLDCYLON · 08-29-2013

Yep everything stated above is 100% on target. Welcome to the Forum DC90

Schrade · 08-31-2013

'90 FSM spec CC diagnostic flow chart:

Do you have FSM yet?

You need 11 thumbs to navigate FSM's, and a few piggies too

, and I got a few wrapped around an icy lager ATM.

Post back if you get stuck here... I can scan more snappics.

little more here:

scottfab · 09-09-2013

Issue with cruise control? Maybe this happened....
Watch this flick about replacing the battery. It covers an issue
with cruise control in it.

http://www.youtube.com/watch?v=jgMa-...layer_embedded

Dynomite · 09-09-2013

I will leave cruise control to the Pros

08-29-2013	#1
Dream car 90 Join Date: Aug 2013 Location: Las vegas Posts: 5	Cruise control not working New to registry I just purchased a 1990 zr1 and the cruise control is not working .Where do I start ?

08-29-2013	#2
scottfab Join Date: Jan 2009 Location: Portland Oregon metro area (Washington side) Posts: 3,193	Re: Cruise control not working There is a large diaphragm above the battery. Check the vacuum hose that runs to it. It gets brittle being just above the battery and can develop a leak. If that seems ok, with the car idling pull in on the diaphragm. The car should rev. From there if all is ok then you need to get a code reader or scanner and read the error codes out and tell us what they are. Places like Autozone will do it free. Else we can point you at a procedure that you can read them out on the dash by shorting to pins together. Welcome to the group. Be patient. There are many things to learn if you are willing. __________________ Scott Vett owner since 1979._It's about the car and the people Last edited by scottfab; 08-29-2013 at 12:59 PM.

08-29-2013	#3
Dream car 90 Join Date: Aug 2013 Location: Las vegas Posts: 5	Re: Cruise control not working Ok Thanks !

08-29-2013	#5
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,158	Re: Cruise control not working also verify the vacuum ball at the left front by the headlight is connected __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978

08-29-2013	#6
Franke Join Date: May 2013 Location: Beaver, PA Posts: 515	Re: Cruise control not working There is also a cruise fuse in the main fuse block. 3 amp.

08-29-2013	#7
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,117	Re: Cruise control not working Yep everything stated above is 100% on target. Welcome to the Forum DC90 __________________ 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

08-31-2013	#8
Schrade Join Date: Dec 2012 Location: NC Posts: 1,783	Re: Cruise control not working '90 FSM spec CC diagnostic flow chart: Do you have FSM yet? You need 11 thumbs to navigate FSM's, and a few piggies too , and I got a few wrapped around an icy lager ATM. Post back if you get stuck here... I can scan more snappics. little more here: Last edited by Schrade; 08-31-2013 at 02:40 AM.

09-09-2013	#9
scottfab Join Date: Jan 2009 Location: Portland Oregon metro area (Washington side) Posts: 3,193	Re: Cruise control not working Issue with cruise control? Maybe this happened.... Watch this flick about replacing the battery. It covers an issue with cruise control in it. http://www.youtube.com/watch?v=jgMa-...layer_embedded __________________ Scott Vett owner since 1979._It's about the car and the people

09-09-2013	#10
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,815	Re: Cruise control not working I will leave cruise control to the Pros __________________ 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; 09-09-2013 at 07:24 PM.