Serious Explorations Ford Explorer and Ranger Message Board
#1 Resource for Ford Explorer and Ranger Owners - By Enthusiasts, for Enthusiasts.


Ford Explorer Generation Guide

EF Swag Store 2015 Ford Explorer Forums Elite Membership Chat Room My Posts Reviews Explorer Photo Gallery
Go Back   Ford Explorer and Ranger Forums "Serious Explorations" > Ford Explorer Ranger Repair - Troubleshooting - Modifications & Detailing Forums > Under the Hood

Notices

Under the Hood Ford Explorer and Ranger, Engine, troubleshooting, modifications, performance and accessories.

Surging with cruise control

Reply
 
Thread Tools
Old 11-26-1999, 05:33 PM   #1
Dr.Doug
 
Join Date: Oct 1999
Posts: 95

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Post

I have a '91 Explorer. When the cruise control is operational, the vehicle surges while attempting to maintain the selected speed. What could this be? The vehicle runs perfect, other than that.

1991 EB
Dr.Doug is offline   Reply With Quote
( Join the Elite Explorers )

For only $20 per year you can become an Elite Explorer. Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose and fix problems yourself, and learn what modifications really work without having to experiment on your own. Elite Explorer members can change the forum "styles" to see less ads, no green underlined links, and many other benefits such as being able to store 1000 Private Messages, upload photo attachments directly to your posts and more. Join the Elite Explorers today.


Old 11-28-1999, 03:04 AM   #2
Skip Pendle
Vallejo, CA
'93 Eddie Bauer
 
Join Date: May 1999
Posts: 71

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Post

Check the vacuum hose for an obstuction or leak.
I recently installed a new cruise control hose with one having a larger internal diameter which improved overall control performance.
Skip Pendle is offline   Reply With Quote
Old 12-03-1999, 05:10 AM   #3
Dr.Doug
 
Join Date: Oct 1999
Posts: 95

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Unhappy

Well, I inspected all hoses involving the cruise control. No damage or blockage found. I applied vacuum and the cruise diaphragm seemed to hold. What gives? HELP!!!
Dr.Doug is offline   Reply With Quote
Old 12-06-1999, 12:26 AM   #4
Dr.Doug
 
Join Date: Oct 1999
Posts: 95

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Question

I received an e-mail from someone recently regarding the odometer and the cruise control. The e-mail suggested that the speedometer sets the stage for maintaining a speed using the cruise.

I found this hard to believe but today I may have confirmed this. At 55 mph my speedometer is steady, as is the speed using the cruise control. AT 68 mph, the speedometer fluctuates 1 to 2 mph. When I set the cruise control at this speed, the vehicle too surged and fluctuated.

Any other input on how the speedometer communicates with the cruise control? I thought that the speed sensor regulated the cruise. Am I wrong?

Doug
Dr.Doug is offline   Reply With Quote
Old 12-07-1999, 03:30 PM   #5
Hank
Elite Explorer
Cape Coral, FL
 
Hank's Avatar
'91 EB
 
Join Date: Oct 1999
Posts: 999

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Post

Hey Doug,

What is the condition of your vac. mod. on the tranny? The cruise control started doing a bunch of strange things right before mine went out on my 91EB. Check your trans fluid level and see if the vac. line from the trans is wet with fluid. Fluid loss in the trans and oil level gain is a sign of this also.
Hank is offline   Reply With Quote
Old 02-24-2010, 03:27 PM   #6
sgray58
1995 xlt
 
Join Date: Feb 2010
Posts: 1

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Engine surge in cruise control

The speed sensor in the transmission has a plastic gear on the end. Mine had one tooth broken off and several others worn. Replacing the gear cured the surging and erratic speedometer readings.
sgray58 is offline   Reply With Quote
Reply

Suggest this thread to friends:

Similar Threads
Thread Thread Starter Forum Replies Last Post
FYI on my Cruise Control Problem Rjj Under the Hood 12 07-20-2007 10:51 PM
Loose speedo needle, causing surging cruise control lbrowne Under the Hood 3 02-11-2003 05:46 PM
surging cruise control 1991 rabo Under the Hood 21 03-06-2002 07:27 AM
Lurching Cruise Control - Any Ideas? Longs Under the Hood 6 10-16-2001 03:23 PM



Join the "Elite Explorers" Today!



Search Explorer Forum


Top of Page

Thread Tools

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 -5. The time now is 07:38 PM.



US Flag
We Support Our Troops!

Explore the site!


Copyright 2014 - 1996 Rick Horwitz Photography



Ford Motor Company is not involved in the management of this site in any way.



All tips on this site are for use at your own risk and discretion.

Modifying the suspension on any vehicle will cause changes to its handling characteristics.



Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.