Mark, When you take off the large connecting hose to the back of the water pump to the internal water pipe and if it's not corroded out like the one I show on the web site, then I would clean off the sensors and leave it alone. If you try to take it out, one or more screws are normally going to break off. Then it's another 2,3,4 hours getting the pieces out. You might get lucky but don't bank on it. I have a 7mm kit for that also on the site. On the pipe is a green head vacuum pivot switch with three connecting hoses. I would replace the switch and the hoses if possible. This is the main vacuum switch to the ignition distributor for timing advance and fuel enrichment thru the warm up regulator. John Hervey -----Original Message----- From: id [mailto:ionicdesign@xxxx] Sent: Thursday, May 08, 2003 6:32 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Water Pipe The water pipe under the intake with the 3 sensors on it should i leave it on when doing a water pump change or should i take it off when i do the water pump change? Mark 6683 To address comments privately to the moderating team, please address: moderators@xxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/