1994 jaguar vander plas xj6 4.0l vacuum schematic
#1
#2
The following users liked this post:
Don B (04-23-2019)
#3
Join Date: Feb 2014
Location: Crossroads of America
Posts: 19,381
Received 12,725 Likes
on
6,373 Posts
Hi Alec,
Welcome to the Jaguar Forums! It's great to have you with us.
I have moved your post from the forum for the X350 to the forum for the XJ40, which is the Jaguar factory project code for your 1994 VDP.
The part in your photos is the Cruise Control Dump Valve. When you press on the brake pedal, it opens to release all the vacuum from the system to immediately disable cruise. It's a critical safety component.
You can easily test the valve. It's normal condition is open, so with no power applied you can blow through it. When you apply 12 volts to the terminals, the valve should close and seal completely so you can no longer blow through it. Failure of the dump valve is a common cause of an inoperative cruise control system.
Please visit the New Member Area - Intro a MUST and post a required introduction so we can learn something about you and your Jaguar and give you a proper welcome.
Cheeers,
Don
Welcome to the Jaguar Forums! It's great to have you with us.
I have moved your post from the forum for the X350 to the forum for the XJ40, which is the Jaguar factory project code for your 1994 VDP.
The part in your photos is the Cruise Control Dump Valve. When you press on the brake pedal, it opens to release all the vacuum from the system to immediately disable cruise. It's a critical safety component.
You can easily test the valve. It's normal condition is open, so with no power applied you can blow through it. When you apply 12 volts to the terminals, the valve should close and seal completely so you can no longer blow through it. Failure of the dump valve is a common cause of an inoperative cruise control system.
Please visit the New Member Area - Intro a MUST and post a required introduction so we can learn something about you and your Jaguar and give you a proper welcome.
Cheeers,
Don
Last edited by Don B; 04-23-2019 at 08:28 AM.
#4
Hi Alec,
Welcome to the Jaguar Forums! It's great to have you with us.
I have moved your post from the forum for the X350 to the forum for the XJ40, which is the Jaguar factory project code for your 1994 VDP.
The part in your photos is the Cruise Control Dump Valve. When you press on the brake pedal, it opens to release all the vacuum from the system to immediately disable cruise. It's a critical safety component.
You can easily test the valve. It's normal condition is open, so with no power applied you can blow through it. When you apply 12 volts to the terminals, the valve should close and seal completely so you can no longer blow through it. Failure of the dump valve is a common cause of an inoperative cruise control system.
Please visit the New Member Area - Intro a MUST and post a required introduction so we can learn something about you and your Jaguar and give you a proper welcome.
Cheeers,
Don
Welcome to the Jaguar Forums! It's great to have you with us.
I have moved your post from the forum for the X350 to the forum for the XJ40, which is the Jaguar factory project code for your 1994 VDP.
The part in your photos is the Cruise Control Dump Valve. When you press on the brake pedal, it opens to release all the vacuum from the system to immediately disable cruise. It's a critical safety component.
You can easily test the valve. It's normal condition is open, so with no power applied you can blow through it. When you apply 12 volts to the terminals, the valve should close and seal completely so you can no longer blow through it. Failure of the dump valve is a common cause of an inoperative cruise control system.
Please visit the New Member Area - Intro a MUST and post a required introduction so we can learn something about you and your Jaguar and give you a proper welcome.
Cheeers,
Don
#5
Join Date: Feb 2014
Location: Crossroads of America
Posts: 19,381
Received 12,725 Likes
on
6,373 Posts
Cheers,
Don
#6
Thread
Thread Starter
Forum
Replies
Last Post
Frank Houghton
New Member Area - Intro a MUST
7
11-06-2018 04:59 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)