Strange Electrical problem - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 03-06-04, 09:33 PM Thread Starter
Mercury Cougar Cool
 
leonbray's Avatar
 
Join Date: Jul 2003
Location: Brisbane Australia
Posts: 205
Strange Electrical problem

This one has got me stumped

When I open the left hand door whiile the car is idling and the a/c is on high, the stereo turns itself off momentarily and then resumes where it was. Checked all the wiring to the door and nothing tests as having been broken

It looks like the current draw of interior lights ( two underdash and two in the doors ) is enough to drop the voltage low enough to trip the stereo

Only running an early internally regulated 55amp alternator

Thanks


Leon
68 Cougar XR7 (302W), 69 Cougar Convertible(302W), 70 Cougar XR7 Convertible (428CJ), 70 Cougar Eliminator (351 4V), 77 Cougar Villager Waggon, XY Ute (302W), XG Ute (IL6 XR6 replica)
leonbray is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 03-06-04, 10:04 PM
Registered User
 
Join Date: Feb 2001
Location: Bibra Lake Western Australia
Posts: 3,135
Re: Strange Electrical problem

Which car? Originally Left hand drive or right hand drive?

Regards Blue
Aussiblue is offline  
post #3 of 7 (permalink) Old 03-06-04, 11:54 PM
Experimental Racer#6
 
TIKFD6's Avatar
 
Join Date: Nov 2000
Location: Wodonga Vic
Age: 43
Posts: 8,204
Re: Strange Electrical problem

Sounds like a short of some kind.
TIKFD6 is offline  
post #4 of 7 (permalink) Old 03-07-04, 04:04 AM Thread Starter
Mercury Cougar Cool
 
leonbray's Avatar
 
Join Date: Jul 2003
Location: Brisbane Australia
Posts: 205
Re: Strange Electrical problem

Problem is in the RHD 69 Cougar Convertible which has door speakers and Sony Xplod CD

Thought it was a short - but it is only the CD player that is affected.

Have pulled the speaker wiring and it is ok. Only happens with left door, when the car is idling and the a/c is on or if a/c has been running for on full output for a while (only done this once). A/C is run off a relay. Will happen when the door is first opened and then won't repeat.

Leon
68 Cougar XR7 (302W), 69 Cougar Convertible(302W), 70 Cougar XR7 Convertible (428CJ), 70 Cougar Eliminator (351 4V), 77 Cougar Villager Waggon, XY Ute (302W), XG Ute (IL6 XR6 replica)
leonbray is offline  
post #5 of 7 (permalink) Old 03-07-04, 04:09 AM
Experimental Racer#6
 
TIKFD6's Avatar
 
Join Date: Nov 2000
Location: Wodonga Vic
Age: 43
Posts: 8,204
Re: Strange Electrical problem

Where is your power coming from?
Might sound silly but have you checked the relay you mentioned?
TIKFD6 is offline  
post #6 of 7 (permalink) Old 03-07-04, 03:08 PM
Lamahs approve of manuals
 
Join Date: Mar 2003
Location: Sydney, Australia
Age: 39
Posts: 1,382
Re: Strange Electrical problem

Well it certainly gets the weird problem of the day award !

As a thought, have you tried opening the left door with the courtesy lights already on ? (i.e. another door already open).

Or perhaps more interestingly, leave the left door open, tape down the open door switch (i.e. convince the car that it is closed), do what you do (idle, a/c, cd etc etc), and whip off the tape. This should at least isolate whether it is related to physical movement (i.e. crimped cable) or purely electrical gremlin....
XR8 Lamah is offline  
post #7 of 7 (permalink) Old 03-08-04, 03:18 AM Thread Starter
Mercury Cougar Cool
 
leonbray's Avatar
 
Join Date: Jul 2003
Location: Brisbane Australia
Posts: 205
Re: Strange Electrical problem

Quote:
Originally Posted by TIKFD6
Might sound silly but have you checked the relay you mentioned?....
.... sounds like a good idea. I think the relay is fed from main power top supply. I might upgrade it anyway to a 40amp Ford relay from plain old Narva

Quote:
Originally Posted by XR8 Lamah
As a thought, have you tried opening the left door with the courtesy lights already on ? (i.e. another door already open).....
.... Yep tried that one and there is no change (CD still drops out) but it doesn't happen if I turn lights on with the dash switch

Quote:
Originally Posted by XR8 Lamah
Or perhaps more interestingly, leave the left door open, tape down the open door switch (i.e. convince the car that it is closed), do what you do (idle, a/c, cd etc etc), and whip off the tape. This should at least isolate whether it is related to physical movement (i.e. crimped cable) or purely electrical gremlin.....
.... I'll give that a shot on weekend. starting to sound like a problem with a bad earth on the door switch - but why would it impact the CD player?

Leon
68 Cougar XR7 (302W), 69 Cougar Convertible(302W), 70 Cougar XR7 Convertible (428CJ), 70 Cougar Eliminator (351 4V), 77 Cougar Villager Waggon, XY Ute (302W), XG Ute (IL6 XR6 replica)

Last edited by leonbray; 03-08-04 at 03:21 AM.
leonbray is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Interior | Electrical | ECU


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome