Hi, I have a 98 Disco that the cruise control on it isn't working. I have a local repairing service checked it and they found the problem is within the vacuum pump. The price they checked from dealers for replacement the vacuum pump is very high. But I found some online business from which I can buy a new one at a relatively low price. Therefore I am wondering maybe I could just buy one pump and replace it myself? Does anybody has similiar experience, and could tell me if this is doable, and how to do it right?

Thanks a lot.

 

Don't have air con here, hmm, don't need it much in Scotland..

Think the problem with replacing the pump though is you have to draint he system down to do it, to do that here int he UK means you have to go to a specialist as it is a legal requirement, to reduce the risk of the chemical's from been released into the environment.

Not sure if the same thing applies to your location or not, but if you do do it yourself take all the precautions you can.

 

I had a 97 Disco a couple of years ago with a similar problem, but it turned out to be the vacuum pipe (rubber) was perished. I got away with cutting the end off and remaking the joint! Total cost involved zero. I hope your problem is the same!

Thanks [8D]

 

I have a 95 disco, and believe it uses the same vacuum system as the 98.

There are three pieces of rubber tubing which all conect near the brake fluid reservoir under the hood. One tube runs to the throttle assembly, one through the firewall to a plunger type contact switch on the brake peddle, and the third snakes around the the left front quarter panel, past the air intake and under the emergency jack. This third attaches to the vacuum pump, which is in a little cubby hole behind the bumper.

1. Before replacing the vaccum pump, I would replace all of the vacuum tubing. Should cost you less than $5 USD. I believe it is 5mm, but am not sure. Bring the short piece with you to an auto part store to match it.

2. While replacing the tubing, make sure the pluger switch is set properly in its mount, as they can occaisonally work themselves loose.

3. The stock rover pump is about $400 USD. If you can find another manufacturer that makes something compatible, the replacement is relatively easy. It involves fishing the old part out and plugging in the three prong electrical connector and vacuum one vacuum tube.

PS. Who had a replacement?

 

Good post anonimaus, and correct. 99% of the time it is A cracked vacuum line. Are you sure you need A pump ? They do fail but not often. Easy way to check the vac system integrity; depress throttle actuator and pinch off line near pump / jack. If actuator stays depressed, vac system is OK. If not, you have A vac leak. Pumps are $400+ US.

Bait