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cruise control surging

 
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TRIK-56
Master Wrench
Master Wrench


Necoa #: 603
Location: 12(MO,OK,KS)
Joined: Feb 06, 2003
Posts: 208
Year: 1982
Model: El Camino

PostPosted: Fri Sep 29, 2006 4:15 pm    Post subject: cruise control surging Reply with quote

My factory original cruise control on my 82 El Camino still works but has a very annoying surge problem.
Example: If I set it to cruise at, say, 65 MPH, it will pretty much maintain that speed but CONSTANTLY accelerate for a second or two and then let off for a second or two. Bugs the heck out of me!! Mad What causes it to do this?
Is there something I can do to prevent or repair this problem? Thanks for any help you can provide!
_________________
Bobby
56 Chevy 2-door sedan
82 El Camino Conquista
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Hansmanbo
Director Region 5
Director Region 5


Necoa #: 1052
Location: 5(NC,SC)
Joined: Jun 06, 2003
Posts: 436
Year: 1979
Model: Caballero

PostPosted: Fri Sep 29, 2006 4:21 pm    Post subject: Reply with quote

Sounds like a vacuum leak. Most likely, It's the diaphram.
_________________
York SC /1979 GMC Caballero / 350 Roller / Alum Heads / 410 posi
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oldelky80
Silver Contributor
Silver Contributor


Necoa #: 5347
Location: 22Canada (E.of Man)
Joined: May 04, 2005
Posts: 613
Year: 1980

PostPosted: Thu Oct 05, 2006 10:49 am    Post subject: Reply with quote

I'm not sure if they still used a vacuum dump valve located next to the brake light switch. If the plunger isn't fully seated you'll get surging.
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