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mjt

Member Since 24 Apr 2008
Offline Last Active Yesterday, 12:13 PM
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Posts I've Made

In Topic: 2004 Mk1 Focus Intermittent Speedo Fault But Not Vss

08 May 2015 - 08:59 AM

We had the same problem on our 03 1.8Tdci estate when we first bought it. The vss and cluster were both changed but didn't cure it. It was eventually found to be the loom chafing against the gear linkage. Has been fine since (7 years).


In Topic: Strap Trapped In Boot Lock (Focus Style 2010)

05 May 2015 - 10:17 AM

Actually no. I just happen to know he said that was his greatest blunder, but with the more recent discovery of dark energy it may turn out that it wasn't.


In Topic: Strap Trapped In Boot Lock (Focus Style 2010)

05 May 2015 - 09:29 AM

The Cosmological Constant? :lol:


In Topic: Ford Focus/ Mondeo Horn Again

04 May 2015 - 11:00 PM

Hi Dave,

No the position of the relay won't make any difference - the overall run length of the wire, battery via relay to horn, will be much the same. The fact you're using thicker than stock and probably a more direct route, hence shorter run, should give an improvement.

 

I don't know the Mondy body. If the bracket you're referring to is welded to the chassis and you're sure you've got a good clean connection to it then running the new ground wire from it ought to be all that's required. If the bracket is bolted to the chassis you'd need to make sure the electrical contact between the two isn't being degraded by corrosion.

 

If you're happy with the electrical connections but are still getting poor results the only recourse, really, is to do some voltage checking with the horn operating. Check the voltage across the horn spade terminals if you can get probes onto them and see how much, if any, voltage you're losing. If more than, say, 0.5V then check between the horn ground spade and battery negative terminal and between the horn +ve spade and battery +ve to see if you can pin down where the voltage is being lost.


In Topic: Ford Focus/ Mondeo Horn Again

04 May 2015 - 08:19 PM

If I've understood this correctly you've installed a relay near the horns, run a heavy wire to it directly from the battery (fused I hope) and used the stock wiring to operate the relay. If that hasn't improved things I think you'd be right in suspecting it's an earthing issue. If you can stand the racket you could try measuring the voltage between the horn earth point and the battery earth while the horn is operating. Alternatively why not try running a heavy gauge wire between the two earth points.