D1 Cruise Control

M

ME Island

Active member
Apr 20, 2017
32
0
Vinalhaven, Maine
www.landroverwriter.com
Hi Everyone,

On my new-to-me '97 D1, the cruise control does not work - nor did it work for the previous P.O.

The CC fuse looks fine and the light goes on at the CC switch. The tube is connected at the brake switch.

Sorry but I could not search for this first...

Next steps?

Thanks,

Jeff
 
CORover

CORover

Well-known member
Jun 11, 2007
745
65
Colorado, USA
Carefully check all of the vacuum hose, every inch. Do not assume it is good. At all the connections and through the firewall.
 
fishEH

fishEH

Well-known member
Jan 26, 2009
6,929
203
Lake Villa, IL
If you're checking hose you might as well just replace it.
Things to check
-hose
-switch by brake pedal
-pump
If those are good its probably your Cruise ECU. There's a very good write up here on how to replace it with the D2 ECU.
 
D

discostew

Well-known member
Sep 14, 2010
7,713
1,016
Northern Illinois
My money is on the cruise ecu. The vacuum lines that corover mentioned are probably rotted off the truck too. But what happens to the cruise ecu is the drivers inside burn up and cause the vacuum pump to never be powered up. You should be able to find a writeup on here someplace about converting the system to a Disco2 cruise ecu. Don't waste your money or time looking for a used one, it will also be bad. I havent seen a good cruise ecu in a disco1 for a long time.

Cruise ecu is about the only thing that got better with the disco2, don't you agree Canus?
 
L

Leadvagas

Well-known member
Jun 10, 2010
232
2
Leadville CO
I would also recommend pulling the cover off of the steering column and inspecting the wiring going to and from the rotary switch. Every D1 I have had has burned up wiring from the rotary switch. For me no big deal, I just pitch the cruise anyway.
 
M

mburnett

Well-known member
Jul 26, 2008
54
0
Archbold, Ohio
Both times mine has quit working it was the pedal switch. One time the plastic tab was broken that holds it in place. It was out of adjustment another time. You have to pull it out and then press the pedal down to ratchet it into position.
 
best4x4

best4x4

Well-known member
Mar 1, 2015
595
72
Beaumont, TX
Also check the vacuum ball by the throttle body.

I've had broken vacuum T's, cracked vacuum line, bad ECU, dirty c/c switch, and one vacuum ball with a crack in it.

I've never had a pump fail on a D1 yet. Mainly cause it was never used due to other parts being broken lol.
 
squirt

squirt

Well-known member
Nov 13, 2008
824
13
Los Angeles
This one.
https://tinyurl.com/39gucf6


39gucf6
 
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