| Author | Message | ||
     Mike Goodell (Mikegoodell) New Member Username: Mikegoodell Post Number: 39 Registered: 11-2002 |
The cruise control has been dead on my 96 Disco since I bought it back in October of 02. I have read all of the different posts about vacuum lines being the main culprit so yesterday I went thru and checked them all with my hand held vac-pump. everthing seemed to be in order as far as the lines went but still no cruise. Just for shits and giggles I pulled the vac pump from its little hole under the jack and checked it out. there is a cover plate that is sealed with an oring that just pops off with a little prying, and inside there is a small relay that dumps the vacuum to disengage the cruise when needed. On my rig, that little relay was stuck, there were indications of a little bit of water being injested by the pump causing the relay to freeze up. A touch of jumper wires to the apropriate terminals on the back of the pump to cycle the relay and run the motor and it seemed to work. Reassembled the pump and reinstalled it and took it for a spin, Lo and behold cruise control was working !!!! Just thought I would pass this on, just something else to check beyond the hoses before you get a dealer invloved. It only took about 45 minutes to do and most of that is removing and installing the pump from the asshole location that LR decided to put it in. Mike G. 96 Disco SD | ||
| Corey (Discobro) Member Username: Discobro Post Number: 183 Registered: 12-2002 |
How did you "jump" the terminals in the first place? I have the same situation. Vac hoses are fine and I even trimmed the ends for kicks. I have taken the pump out and now it just sits in that hole under the jack (there was no way I was going to try to get those damn little rubber feet on the bottom of the pump to go back through those holes!) If you could give a little more info on how you managed to EKG the pump I would apppreciate! Thx! | ||
| Mike Goodell (Mikegoodell) Member Username: Mikegoodell Post Number: 45 Registered: 11-2002 |
EKG was pretty easy, pop off the front cover of the pump, look at the terminals, hook up the jumper wires, and shock away. there are only 3 terminals on mine. one is a common, one to the vac motor and one to the relay. Putting the pump back was easier than figuring out how it comes out. Put it back in it's original location with the tips of the rubber feet protruding thru the holes, then crawl under the bumper and look up, you should see the three little feet sticking out, just pull on them to work the grommets back into position. Mike G. 96 Disco SD | ||
| ken knebusch (Charlotterover) Member Username: Charlotterover Post Number: 148 Registered: 02-2002 |
Thanks for the info. Mike. I have been without cruise for quite awhile. Didn't care really, but have changed all the hoses and will check this next. Ken | ||
| Porter Mann (Porter) New Member Username: Porter Post Number: 7 Registered: 05-2003 |
I was wondering about my cruise control. I've noticed that going up on steep hills, the cruise control doesn't keep the speed consistent, it starts to slow down - in fact, on one of the hills the cruise control shut itself off. Has anyone else had this problem? | ||
| Corey (Discobro) Member Username: Discobro Post Number: 187 Registered: 12-2002 |
I belive that IS a vac problem. I have seen this discussed before so check the archives (link in upper right corner of window "Search"). | ||
| R. B. Bailey (Rover50987) Senior Member Username: Rover50987 Post Number: 571 Registered: 07-2002 |
Question: I too checked and repaired the vac hoses, and that helped for a while. But now it does not do anything. I noticed that when it works there is a relay type "click" that can be heard under the glove compartment. If it is not working there is no click. The question is - is the "click" a symptom of the problem or part of the chain of events that does not happen when the vac pump is not working? In other words, is the computer the problem? Or is it the little vacume pump under the jack not allowing the computer to "click"? I ask because the computer is too expensive to replace, so forget it. But if I can narrow it down to the vac problem you just told us all about, then it would be worth my time to try to fix it myself. http://landrover.mrbaileyshistory.net | ||
| Corey (Discobro) Member Username: Discobro Post Number: 189 Registered: 12-2002 |
When I turn on my main CC switch I can hear the relay clicking under the glove box too. There has never been a case for me where I can't hear this click. I think that my vac is the problem and I may just buy a new one. Does anyone know costs? R.B.- if the problem is the CPU I would just forget it. Those things are a few hundred $$ -unless you plan to do a lot of commuting in the future  . | ||
| Porter Mann (Porter) New Member Username: Porter Post Number: 10 Registered: 05-2003 |
Corey, so you think that the leak is tiny and that's why its still working, but becuase of the leak - it doesn't keep the speed consistent when its under load, like climbing a hill? | ||
| Porter Mann (Porter) New Member Username: Porter Post Number: 12 Registered: 05-2003 |
The thing is, it still works. I can keep a very consistent speed on flat ground or downhill, just not going up anything uphill. Just for peace of mind, I think I'll simply replace them anyway. | ||
| Corey (Discobro) Member Username: Discobro Post Number: 192 Registered: 12-2002 |
I think you still have some pressure to keep you going on flat ground. Sounds like when it has to work it poops out cause of a smaller leak maybe. I didn't completely replace my hoses but thoroughly checked them and trimmed all of the end points including the one that attaches to the brake switch. Replacing them all is a good idea and cheap to do. If it works great, if not then on to the next step of the pump. | ||
| James Moy (Jmoy97) New Member Username: Jmoy97 Post Number: 30 Registered: 02-2003 |
I have problems with my cruise control also. I checked and replaced all the vac lines. I checked the fuses. My main CC switch turns on but I do not hear a relay click after that. Any idea what may be the problem? Thanks in Advance | ||
| Raf usher (Zonamaya) New Member Username: Zonamaya Post Number: 22 Registered: 05-2003 |
what are the main parts exlc hoses that could go bad w/ cc? | ||
| Corey (Discobro) Member Username: Discobro Post Number: 199 Registered: 12-2002 |
Parts that could go bad are the vacuum pump, main switch, steering column switch, CC relay and the CPU. CPU is $$$ and relay is fairly cheap as are the switches. The CPU and vac pump are the most likely to go bad (besides hoses). My guess is that if you don't hear a click in the passenger kick panel when you turn the main CC switch on you may have a bad relay or CPU. That's just a guess though. | ||
| James Nyazai (Nyazai) New Member Username: Nyazai Post Number: 3 Registered: 06-2003 |
I tried the solution listed somewhere in this board about replacing cracked vacuum lines coming off the "tee" near the brake master cylinder/clutch resevoir, except that before I replaced them I just cut off the cracked part with scissors (about 1 or 2 inches from each of the 3 lines) and re-connected to the tee - worked like a charm! Got the cruise control back! 5 minute, free repair! Need more of those after doing a new steering box! -James. | ||
| Raf usher (Zonamaya) Member Username: Zonamaya Post Number: 107 Registered: 05-2003 |
well.. i drove mine today after opening the main on swithch... it works more now than ever, but it tend to cut off. and i have to turn off then on again. any clues? | ||
| Corey (Discobro) Member Username: Discobro Post Number: 227 Registered: 12-2002 |
Now I'm stumped. I jumped the vac pump and everything works like it's suposed to but still no CC. Could there be faulty wiring between the CPU and the vac pump? Anyone come by this? | ||
| Raf usher (Zonamaya) Member Username: Zonamaya Post Number: 132 Registered: 05-2003 |
corey there are 2 other possibilities tha I HATE to mention .. but it looks like we are in the same boat.. so you do it first, and let me know.. according to the "hot" Cd, there is sometimes a damaged wire located inside the steering wheel that connects to the set switch. you should check to see if they are in good contistion. the other thing is to [pull out your on/off switch and OPEN IT..take it apart.. (remove the little lights and it should popp right off.) get contact cleaner and clean it.. OR make a new on/off swicth. i'd make a new switch but i cant figure out WHICH wires turn on the CC. if you find out.. let me know.. i'll make one. | ||
| JPinson (Jeffro0502) Member Username: Jeffro0502 Post Number: 68 Registered: 02-2003 |
One other thing I don't think anyone has mentioned is the CC diaphragm I found a small little pin hole in mine....stretched the hole a little and worked some flexible silicone in the hole let it dry and it worked perfect. You can also shell out about $20 I think and get a new one. If anyone is having problems going uphill a leaking diaphragm could be the problem. Or if your cruise is not working at all don't forget about this part also. |
