The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-26-2013, 11:30 AM   #1
JCampbell
Account Suspended
 
Join Date: Apr 2008
Location: Hesperia, Ca
Posts: 1,332
Pulsing/Surging Cruise Control

Cruise control pulses, or surges up and down when engaged. Sometimes it smooths out, other times not. '88 TBI 350.

Any ideas?
JCampbell is offline   Reply With Quote
Old 04-26-2013, 04:10 PM   #2
cleansquare
Account Suspended
 
Join Date: Mar 2013
Location: lumberton tx
Posts: 575
Re: Pulsing/Surging Cruise Control

Mine does it too. No idea. I put a new vaccum pod thingy on but no bueno
Posted via Mobile Device
cleansquare is offline   Reply With Quote
Old 04-26-2013, 04:19 PM   #3
JCampbell
Account Suspended
 
Join Date: Apr 2008
Location: Hesperia, Ca
Posts: 1,332
Re: Pulsing/Surging Cruise Control

I'm going to pull a vacuum on the cruise "solenoid" this weekend and see if it holds. Might just be a leaky vacuum line somewhere.
JCampbell is offline   Reply With Quote
Old 04-26-2013, 04:32 PM   #4
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,938
Re: Pulsing/Surging Cruise Control

Quote:
Originally Posted by JCampbell View Post
I'm going to pull a vacuum on the cruise "solenoid" this weekend and see if it holds. Might just be a leaky vacuum line somewhere.
This would be my guess... not holding vacuum @ some point in the system.
__________________
67SWB-B.B.RetroRod
64SWB-Recycle
89CCDually-Driver/Tow Truck
99CCSWB Driver
All Fleetsides
@rattlecankustoms in IG

Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
SCOTI is offline   Reply With Quote
Old 04-26-2013, 07:24 PM   #5
tucsonjwt
Registered User
 
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,188
Re: Pulsing/Surging Cruise Control

Mine cuts out on the downhill travel, will not hold below 45 mph. I replaced all the vacuum lines, actuator, brake switch, everything but the control lever on the column (1983 model year only type). That switch/lever was not available until recently, and it is too much to warrant replacement. There is a circuit board in a red plastic box under the dash, but that has to be sent into the aftermarket manufacturer and they are supposed to be able to repair it.

Converting to electric cruise I think makes more economic sense - vacuum is an unreliable method IMHO.
tucsonjwt is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:44 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com