XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

CAC4968

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Old 11-26-2018, 10:42 AM
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Default CAC4968

Does my 84 have 1 of these, they evidently fit on the vac pipe b4 the ecu

 
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Old 11-26-2018, 02:28 PM
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I'm not aware of any that didn't have it. So in answer to your question I'd say "yes"

Let's hear what others have to say

Cheers
DD
 
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Old 11-26-2018, 03:23 PM
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They are a real nuisance. My car ran far worse with it in the vac line. I say forget it.
 
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Old 11-26-2018, 03:23 PM
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Originally Posted by Doug
I'm not aware of any that didn't have it. So in answer to your question I'd say "yes"

Let's hear what others have to say

Cheers
DD
There are some on eBay at the moment for £5 including postage but I know my boot area inside out and I have never seen this, all I have is a vacuum steel pipe with a flexible to the ECU, or is it under the floor?
 
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Old 11-26-2018, 03:29 PM
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Originally Posted by rgp
There are some on eBay at the moment for £5 including postage but I know my boot area inside out and I have never seen this, all I have is a vacuum steel pipe with a flexible to the ECU, or is it under the floor?
It goes into the flexible just before the ECU. My car did not have one from the factory, I put one in during my rebuild, and swiftly took it out again. It is there to damp the vac signal to the ECU, why I do not know.
 
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Old 11-27-2018, 09:05 AM
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Email fromf aj6 engineering regarding this small tank
It is supposed to be a damper but I have never seen any evidence that it makes much difference.
I suggest that you leave the pipework as it is and don’t worry about it.
Have you seen my new webisite: aj6 engineering | For the Jaguar enthusiast
​​​Best regards,
Roger Bywater.
 
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