Vacuum pipes

Moderators:davidr, BigCatXJS, dhdove

johnk

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Posts:4
Joined:Fri Aug 30, 2019 5:01 pm
Location:Ayr
Vacuum pipes

Postby johnk » Thu Aug 20, 2020 9:38 pm

Hi, can anyone point me in the direction of a diagram for the vacuum pipes on a '80 P digital car please? I've not used the car in 6 months and all I'm getting is massive heat regardless of the dial setting. I've noticed a pipe from the control valve that goes into the bulkhead with part of the loom high up on the passangers side which doesn't look too clever so I'm guessing this is the problem but I'd like to change all the pipe work as its now 40 years old and bound to give me grief in the future. Many thanks.

davidr

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Location:Salisbury, Wilts

Re: Vacuum pipes

Postby davidr » Thu Aug 20, 2020 9:53 pm

Hi johnk - can I suggest that you get yourself a copy of the Repair Operation Manual? I think that will be a great help to you as you recommission your car.
Paper copies are available from the Club Shop but they can also be found on CD online.
For this specific fault, I would look to see if the heater valve on the bulkhead is closing properly. Firstly, is it getting vacuum and if so does it shut off the flow of hot coolant properly?
Hope that helps
XJS FORUM COORDINATOR
1996 XJS Celebration Convertible 2001 XKR Convertible

Previously enjoyed!
1989 XJ-S V12 Coupe. 2006 XJ TDVi Sovereign. 1995 XJ6 3.2. 2013 XF 2.2d. 2009 X Type 2.0d Sovereign estate

johnk

Member
Posts:4
Joined:Fri Aug 30, 2019 5:01 pm
Location:Ayr

Re: Vacuum pipes

Postby johnk » Thu Aug 20, 2020 9:57 pm

Thanks for the quick reply Davidr, I'll get a manual ordered in the morning!


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