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mjt

Member Since 24 Apr 2008
Offline Last Active Mar 04 2015 05:44 PM
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#461098 Engine Revs Hang Between Gears

Posted by mjt on 04 March 2015 - 05:30 PM

Andrew, I take it you mean that when you come off the gas and declutch for your gearchange the revs stay high? If so that can't be a clutch problem. Assuming it's not something as simple as a sticking throttle cable or butterfly it might be the idle control valve.




#458837 Blanked Egr, Now Eml Is On 18,000 Miles Later

Posted by mjt on 26 February 2015 - 11:09 AM

E.G.R.V.'s are purely E.U. emission control , as are D.P.F.'s -  both are diesel engine killers.

Unfortunately un-emission-controlled diesel engines are also human killers. Diesels have always been dirty engines and however much stuff is bolted on they will never be really clean. Even the awful DPF doesn't completely remove particulates which are so small that, once in the lungs, they get into the bloodstream and the EGR doesn't reduce the nitrous oxides that are causing such problems in urban areas. Attempts to clean them up are simply hobbling their performance and adding to both the initial and running costs and so reducing the benefits compared to petrol. Also, of course, deleting these components simply increases these harmful emissions.

 

I know petrol engines are far from perfect but their emissions are less harmful to heath and a lot simpler to control. I've been driving a diesel Focus for the last five years. It's the first I've owned and I will freely admit that I find it a much nicer drive than my newer petrol Focus but I won't be buying another diesel.




#453773 Ford Focus Mk3, Sub, Amp & Speakers Upgrade

Posted by mjt on 11 February 2015 - 09:47 PM

I'd strip insulation gently with a stanley blade as they look very thin,
Double them back on themselves and twist the copper to fatten it up a bit prior to crimping,

 

Take care if stripping by this method as it's all too easy to nick the conductors and produce a weak point that can fracture due to vibration. It's worth investing in a proper tool such as this, which is not hugely expensive and then you've always got it for the future.

 

Also I would advise against twisting the conductors before crimping as they will then cut into one another, again producing a weak joint. By all means strip double length and fold back to fatten up if necessary to get a snug fit prior to crimping but don't twist.




#453591 Ford Focus Mk3, Sub, Amp & Speakers Upgrade

Posted by mjt on 11 February 2015 - 11:46 AM

If you can run to it a ratchet crimping tool such as this is preferable to the simple plier type as it gives consistent results with no danger of over- or under-crimping.




#451667 Focus Ecoboost Mk3

Posted by mjt on 05 February 2015 - 10:16 AM

DMF = Dual Mass Flywheel. The flywheel is in two concentric parts connected by springs to damp out the impulses from the engine. This is supposedly an improvement over the older method of having the springs in the clutch driven plate but it's more expensive to fix if a problem develops.




#446677 Relocating The Washer Jets

Posted by mjt on 20 January 2015 - 09:15 PM

Because of the steeper angle you'll find it much more tricky to adjust the jets to fall in the correct place on the screen and the airflow at different speeds will have more effect in deflecting the flow. I found this a particular problem on a white van-based motor caravan. Most white vans have quite snub noses so the jets have to be positioned immediately below the screen. It's almost impossible to get the adjustment right and then it changes depending on road speed.




#440649 Knocking Noise On Full Lock

Posted by mjt on 31 December 2014 - 11:31 AM

 Can understand when CV joints failing if a perished boot isn't spotted and all the grease gets flung out but yours sounds like a faulty part in some way.

 

It's always possible a split boot has been replaced and some dirt got into the joint while doing that.




#439746 1.6 Tdci Warm Up Times...?

Posted by mjt on 27 December 2014 - 11:13 AM

I find fiddling with one's knob whilst driving can be very distracting . . . . :D




#434801 Zetec 1.6 - How Does One Replace Battery?

Posted by mjt on 07 December 2014 - 10:46 AM


I personally start the car at this point saves faffing about for codes/resetting windows etc.

 

If you're suggesting leaving the engine running whilst removing the battery this is a very bad idea. The battery acts as a very large smoothing capacitor. Without it there will be a lot of voltage spikes on the electrical system which can damage sensitive electronics like the ECU, GEM and instrument cluster. Also if the positive battery lead accidentally touches the chassis you could instantly blow your alternator.

 

If you want to avoid 'faffing about with codes' the best way is to connect a small battery across the leads before disconnecting them. That will maintain your codes and in case of an accidental short the small battery won't provide enough current to do any damage. You can make up a 12V battery from 8 AA cells using a battery box like this. I think it's possible to connect this using the 12V cig lighter socket as long as this is permanently live.




#423761 Headlights

Posted by mjt on 29 October 2014 - 10:47 AM

Just thought I'd mention that self-levelling and adaptive (or directional) headlamps were offered on the Citroen DS as long ago as 1967.




#418546 Is The Dashboard Figures Accurate? (Miles Left To Empty Tank)

Posted by mjt on 12 October 2014 - 11:30 AM

Obviously the range is calculated based on the current average fuel consumption and when you consider the number of variables involved it's quite amazing that it's as accurate as it is. For example the fuel consumed is measured from the injector opening times but this is dependant upon the fuel rail pressure and the temperature of the fuel (warmer fuel being less dense). The distance travelled is affected by the amount of tyre wear and the "slippage" that occurs between tyre and road which is affected by the grippiness of the tyre (which depends upon the hardness of the tyre compound) and the road surface (more slippage in the wet, for example).




#417415 P0428 Dtc After Dpf Removal

Posted by mjt on 08 October 2014 - 10:53 AM

I've been of the opinion for some time that the particulate emissions from diesel engines, particularly those universally used for road haulage and public transport, is a significant factor in the increase of breathing problems such as asthma. I tend to agree with FOCA that attempts to cure this problem by bolting on ever more restrictive emission control systems is not working. This is why I've decided to revert to a petrol car. I suspect that our old 1.8TDCi without all these systems is not much, if any, worse than a modern one with them and is a good deal cheaper to maintain. I've already got a newer petrol focus and when we change the old diesel we'll be looking for another petrol.




#407763 Disconnected Wire??

Posted by mjt on 09 September 2014 - 03:55 PM

Are the wife colours black, brown and 2 yellows?

 

How many wives do you think he's got? :D




#399810 Ford Focus Mk2 Steering Wheel Vibration

Posted by mjt on 20 August 2014 - 08:46 AM

I started driving on Minis and the inner joints on those were rubber cruciform types. They were clamped in using U-bolts and if not properly aligned would cause the shaft to run out of true. This had two effects : firstly they would be out of balance, although as they were relatively light weight this didn't cause much of a problem. The other effect was that it cased the wheel rotation to be very slightly uneven which reflected through the steering as a wobble. This was noticeable at low speed more than high. The joints were always troublesome because they got oily, the rubber swelled and they started knocking on the transmission casing.

 

Modern shafts use the tripod joints with needle roller bearings and don't, as far as I know, suffer from misalignment but as you seem to have eliminated wheels and tyres as the source of the problem I just thought it would be worth checking to see if the shafts are running true or, worst case, bent. The only way I know of is to jack up and turn the wheels whilst looking at the shafts.




#398583 Ford Focus Mk2 Steering Wheel Vibration

Posted by mjt on 17 August 2014 - 02:53 PM

Assuming you've checked for distorted wheels I'd have thought the next place to look would be the driveshafts and their joints. As the vibration is noticeable from such a low speed I'd check for the shafts running out of true and have a close look at the inner tripod joints.