Cruise Control

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Author Message   Roberto Racarcci (Kingsnight) New Member Username: Kingsnight Post Number: 1 Registered: 01-2004 Posted on Wednesday, January 21, 2004 - 04:03 pm:    Greetings: Any help on a cruise control. Working fine; then not working at all. Nothing changed in weather or driving. 1997 Discovery 123000 miles No fuse problem; and does not seem to have any elecrical problems other than this one. Thanks   Matt Moore (Mmoore) New Member Username: Mmoore Post Number: 6 Registered: 01-2004 Posted on Wednesday, January 21, 2004 - 04:08 pm:    Check your vacuum lines. The cruise control has a little vacuum pump that runs the system behind the left front headlight.   Bob Shinn (Bshinn) New Member Username: Bshinn Post Number: 15 Registered: 01-2004 Posted on Wednesday, January 21, 2004 - 05:06 pm:    I'm having problems w/ the cruise on my DII, It suffered from a cracked hose & was completely dead. Replaced the hose & it came to life but, it will not hold a steady speed. If you set it for say 70mph, it will coast unill it drops ~ 1/2-1 mph then it will accelerate to about 70-71 mph & coast again. Very irritating, any suggestions? Thanks Bob   Porter Mann (Porter) Member Username: Porter Post Number: 115 Registered: 05-2003 Posted on Wednesday, January 21, 2004 - 05:57 pm:    what type of hose did you replace it with. Some are too flexable and collapes when the vaccum is applied.   Bob Shinn (Bshinn) New Member Username: Bshinn Post Number: 17 Registered: 01-2004 Posted on Wednesday, January 21, 2004 - 06:05 pm:    It's a standard vacuum hose, I don't think it's collaping, what would you recommend?   Joseph Bilyk (Denverrover) Member Username: Denverrover Post Number: 123 Registered: 02-2003 Posted on Wednesday, January 21, 2004 - 06:18 pm:    Bob - Sounds like you still have a leak. Check the diaphram....or it's your VSS.   Justin Sherfy (Jrsherfy) Member Username: Jrsherfy Post Number: 43 Registered: 08-2003 Posted on Wednesday, January 21, 2004 - 06:18 pm:    Bob, I have an '03 Disco and it does that same thing. However, after about 20 seconds it levels out and holds a steady speed. Come to think of it, I haven't noticed the problem anymore. Maybe I'm getting used to it, or maybe it's gone away. JRS   Christian Kiely (Redrover47) Member Username: Redrover47 Post Number: 48 Registered: 09-2003 Posted on Wednesday, January 21, 2004 - 07:06 pm:    My '01 D2 does that, but I've always just assumed that's they way it works to begin with, it is a LR after all. I rarely use cruise control so I haven't bothered with looking for a problem.   Bob Shinn (Bshinn) New Member Username: Bshinn Post Number: 18 Registered: 01-2004 Posted on Wednesday, January 21, 2004 - 07:09 pm:    It does it more than 20-30 seconds & drives me F'n nuts! I'm leaving for Disneyhell on Sunday & am trying to get this sorted out b4 then.   Matt Moore (Mmoore) New Member Username: Mmoore Post Number: 7 Registered: 01-2004 Posted on Wednesday, January 21, 2004 - 07:27 pm:    I had the surging problem on my '03. The dealer reprogramed something in the computer and made it better. Now it only surges for 2-3 seconds and then calms down.   ron morgan (Rpm2429) New Member Username: Rpm2429 Post Number: 24 Registered: 08-2003 Posted on Thursday, January 22, 2004 - 01:06 am:    My 96 d1, quit one day, the plunger at the brake had fallen off, reinstalled and has worked ever since, good luck, Ron   Darryll Mills (Emnat) Member Username: Emnat Post Number: 77 Registered: 11-2003 Posted on Thursday, January 22, 2004 - 10:51 am:    How do you test the vacume on the pump. I still cant get my cruise to work. I hot wired the pump which worked but I have no idea if it is still strong enough. I have changed all the hoses and get the relay sound from the front pass side of car when I turn it on. When does that vacume pump come on?? When engine is running or at a certain speed ?? I am now wondering about the hose I replaced it with if it is strong enough as well.   SSV (Susannah) Senior Member Username: Susannah Post Number: 646 Registered: 06-2002 Posted on Thursday, January 22, 2004 - 03:45 pm:    I replaced my vacuum hose with the standard lines for windshield washer fluid (Auto Zone ~$8) and it's been great. Only time it stops working is when I discover another crack in the old/original hose. Any my car also loses power about 5mph on hills, even at highway speed...but I do live in a pretty steep area and it's worse in the summer with the A/C on...really pulls on the engine. Good luck.   Bob Shinn (Bshinn) New Member Username: Bshinn Post Number: 23 Registered: 01-2004 Posted on Thursday, January 22, 2004 - 04:04 pm:    Joseph, Checked the diaphram w/ a MityVac. It holds, I'm assuming VSS is the vehicle speed sensor.As newbie owner who is sill manualess, where is it & how much of a PITA is it to replace?   Bob Shinn (Bshinn) New Member Username: Bshinn Post Number: 24 Registered: 01-2004 Posted on Thursday, January 22, 2004 - 04:08 pm:    P.S. Wouldn't I get some other indications of failure, bad speedo, check engine light ect?