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  #1  
Old June 19th, 2008, 06:49 PM
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Ticking?

Hey all you experts...........

Whenever I turn off my Defender after a drive - there is a slow ticking sound - like a timebomb or it's heart It does not last too long.

This is not new...........it has done this as long as I can remember. But other cars don't do it, or at least not this pronounced.

So I have always been curious what it was?

Flagg
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  #2  
Old June 19th, 2008, 06:55 PM
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probally just something cooling off, have you ever lived in a house with a tin roof?
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Old June 19th, 2008, 07:00 PM
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exhaust leak or cats
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  #4  
Old June 19th, 2008, 07:07 PM
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Cooling off sounds right………………
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  #5  
Old June 19th, 2008, 07:54 PM
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clock
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Old June 19th, 2008, 08:21 PM
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English clocks here………….
http://www.cuckooclockshop.co.uk/
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  #7  
Old June 19th, 2008, 08:33 PM
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nice contribution sasha....

Flagg, where does the sound come from? If from the engine, I agree with normal engine cooling sounds.
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Old June 19th, 2008, 08:47 PM
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Comes from the Engine..........I figure it is just normal cooling sounds. I just don't hear it, at least not so often, on other cars I have owned.

Thanks!

Flagg
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  #9  
Old June 19th, 2008, 08:58 PM
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maybe its the hella 500's
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  #10  
Old June 19th, 2008, 09:44 PM
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Now your getting PERSONAL!
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  #11  
Old June 20th, 2008, 01:39 AM
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Pretty common on most cars, almost always the various exhaust parts cooling off.

Catalytic converters and cast iron exhaust manifolds tend to hold a LOT of heat in them, and we have two of each.

-Hans
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  #12  
Old June 20th, 2008, 08:16 AM
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If it is coming from the dashboard area it could be the following.....has something to do with the anti-theft device.


Clicking in 10AS Control Unit

AFFECTED VEHICLE RANGE:

DEFENDER (LD) VA992105 to VA999484

VA100300 to VA126471

SITUATION:

INTERMITTENT CLICKING NOISE FROM DASHBOARD

An intermittent clicking noise may be heard coming from the dashboard on some '97 model year Defenders. The clicking noise sounds very similar to a turn signal flasher in frequency and loudness. Once the clicking noise begins, it will continue until the ignition switch is cycled off and then on again. The source of the clicking noise is a relay within the immobilization control unit (10AS unit). A revised unit is now available to address this symptom.

RESOLUTION:

REPLACE IMMOBILIZATION UNIT

To address a customer complaint matching the above description, verify that the source of the clicking noise is the alarm ECU and replace the unit with the latest type.

PARTS INFORMATION:

AMR6430A Immobilization Unit

WARRANTY CLAIMS:

86.77.01 Time 0.70 hrs.

Replace 10AS ECU

FAULT CODE: Z

Normal warranty policy and procedures apply

REPAIR PROCEDURE:

REPLACE IMMOBILIZATION (ALARM) CONTROL UNIT

1.

Refer to the procedure in Workshop Manual Section 86, Page 16, Operation 86.77.01.

2.

Remove the 10AS unit from the vehicle.

3.

Install the new 10AS (AMR6430A) and initialize with TestBook.


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  #13  
Old June 20th, 2008, 09:02 AM
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Let's not rule out a VBIED! Look for plastic explosives or dynamite in the undercarriage or under the bonnet with a clock looking thing and a mess of wire attached to it. Most likely put in place with duct tape. Good luck!
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  #14  
Old June 20th, 2008, 09:07 AM
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NO anti theft device......interesting however.........but......I am chalking it up to what Hans said a few post up..........

Flagg
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  #15  
Old June 20th, 2008, 09:11 AM
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Quote:
Originally Posted by Overlander
Let's not rule out a VBIED!
Someone has spent too much time downrange...
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  #16  
Old June 22nd, 2008, 11:46 AM
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Quote:
Originally Posted by JimC
Someone has spent too much time downrange...
Says the man whom I know where he is :-)

-Hans
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My oil line fix

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  #17  
Old March 16th, 2009, 12:15 PM
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Ok I'm going to revive this one. I ave the same issue I have narrowed it down to the AMR6430A Immobilization Unit. When unplugged the clicking stopped. where can I get a new unit and can I do the install or do I need to computer?
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