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This post has been edited by Dreek: 28 March 2013 - 06:48 PM
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Buzzing Headlight?
#1
Posted 28 March 2013 - 06:40 PM
I've just noticed, when the engine is off, that there's a quite loud low pitched buzzing when my Puma's lights are on (in both light-switch positions-sidelights and headlights). Investigating under the bonnet, It's coming from the nearside headlight area, and it stops when the lights are switched off. I can't hear it with the engine running, but I guess it's happening then too. Bit odd - is there a relay in there somewhere that could be failing/sticking? Any help gratefully received, thanks.
#2
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Posted 28 March 2013 - 10:25 PM
Could be the headlight levelling motor try moving the switch up and down to see if the light moves and the sound changes
#3
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Posted 29 March 2013 - 08:49 AM
Rick
The Haynes Fiesta Manual (3397) can answer a lot of your questions.
The Haynes Fiesta Manual (3397) can answer a lot of your questions.
#4
Posted 30 March 2013 - 09:48 AM
Thanks V4FRP and YOG for the help - I'll just wait for it to stop snowing then I'll give it a look! I'll report back...
#6
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Posted 31 March 2013 - 02:28 PM
Links working for me.
Rick
The Haynes Fiesta Manual (3397) can answer a lot of your questions.
The Haynes Fiesta Manual (3397) can answer a lot of your questions.
#7
Posted 31 March 2013 - 05:16 PM
Job done, thanks for the great guide (so good i managed without the pictures!) and help.
In the end I had to remove the PCB from the headlamp adjustment motor assembly, desolder the potentiometer and spread its fingers a little to make better contact, before reassembly and test. I was able to diagnose the specific fault detail by reconnecting the motor assembly into the headlamp assembly with its lid removed (in the car) and applying pressure to the potentiometer wiper while it jumped around - when I did this the motor stopped chattering and settled into a stable position. Bit fiddly (borrowed a magnifier from the wife's crafting gubbins) and you need to be able to solder properly, but it's doable.
Finally, lubricating the headlamp locking mechanism with wd40 made refitting much easier.
Replacement eBay part on order anyway - it's only an hour's job now I know how.
Thanks again for the help; this forum is going to save me a fortune in garage costs!
In the end I had to remove the PCB from the headlamp adjustment motor assembly, desolder the potentiometer and spread its fingers a little to make better contact, before reassembly and test. I was able to diagnose the specific fault detail by reconnecting the motor assembly into the headlamp assembly with its lid removed (in the car) and applying pressure to the potentiometer wiper while it jumped around - when I did this the motor stopped chattering and settled into a stable position. Bit fiddly (borrowed a magnifier from the wife's crafting gubbins) and you need to be able to solder properly, but it's doable.
Finally, lubricating the headlamp locking mechanism with wd40 made refitting much easier.
Replacement eBay part on order anyway - it's only an hour's job now I know how.
Thanks again for the help; this forum is going to save me a fortune in garage costs!
This post has been edited by Dreek: 31 March 2013 - 05:18 PM
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