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Old 23rd June 2019, 16:28   #91
suzublu
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Quote:
Originally Posted by Shoeburymike View Post
Hi there, just a couple of questions! What is a T4? What is 'speed locking' ? Googling it just doesn't help!
T4 is the diagnostic software used for our cars.
Speedlocking is locking the doors when driving off. Most people disable this if it's been enabled
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Old 24th June 2019, 21:10   #92
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Hi there, just a couple of questions! What is a T4? What is 'speed locking' ? Googling it just doesn't help!
MIKE. You are in the wrong forum for questions like this. This forum is for useful information on the repair of our cars.

Could you ask it again in the main forum ??
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Old 24th June 2019, 21:12   #93
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And here is a genuine useful bit of information.


https://www.gov.uk/check-mot-history
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Old 7th April 2020, 12:43   #94
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Something I keep in my tool box is a pump salvaged from an empty bottle of liquid hand cleaner. One from a puffer bottle would do but I would adjust the nozzle to squirt rather than to spray for the purpose I mention. I have found it useful for removing small amounts of brake and clutch fluid from their reservoirs. If the attached tube is long enough it can also be handy for removing excess coolant


Edit: Typo corrected.

Last edited by WillyHeckaslike; 7th April 2020 at 22:18.. Reason: Typo.
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Old 7th April 2020, 22:18   #95
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Hi there Willy, nice to see you in here.

To do a similar thing I use a fairly long piece of small diameter clear plastic tube. By gently sucking on the end I remove the extra liquid and also see how much at the same time. Avoids the guess work.--

Gets into awkward places quite easily too such as under the dash.
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Old 16th December 2020, 18:38   #96
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A bit more information to go with my battery posts, numbers 73 and 80.



There are two ways that a cell in a battery can fail quite quickly.

1/ Almost instantaneously is when the lead plates in a cell become detached at the tag that links the cells together.
Plates are roughly rectangular with a tag at one of the corners. According to the batteries rated capacity the number of plates in a cell varies, from about 5 to 9 for cars.
When the block of plates is placed in one of the 6 compartments in the case the tags stick upwards in a row.
The positive plate tags to one side and the negative tags to the other
A lead link is melted on to the tags fusing them all together. ( pos to pos, Neg to neg. )

These links are then joined together so that the total voltage along the length of the battery is approximately 12.6 volts.
( Each cell being close to 2.1 volts.--Six cells. )


2/ The second way a cell can die is when, due to vibration over several years of use on the car, some of the paste from the plate grid falls to the bottom of the cell and causes a short circuit across the negative and positive plates, rendering them useless.
If checked with a volt meter the reading across the battery will show around 10 volts.
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Old 16th December 2020, 19:50   #97
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Had both types happen to us especially after removing an old battery out of engine bay to commence a fuel pump or clutch job !!
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Newbies do now!!
1. Plenum drains..all 3 or 4 year dependent
2. Cooling fan..All speeds functioning
3. Bonnet cable divider block
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Old 16th December 2020, 21:31   #98
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Had both types happen to us especially after removing an old battery out of engine bay to commence a fuel pump or clutch job !!
It's nice to know why some failures happen. Over the years I've read lots of posts from well intentioned members giving their opinions about batteries and why things happen to them. Unfortunately not always technically correct. In the past I've made batteries myself and designed tools to manufacture the internal components. My posts on the forum are to try and shine a light on how batteries work and how to attend to their needs to get as much life out of them as possible.

The forum came to life as a tool to help R75 owners to cut running costs and my input about batteries is to help towards that end.---
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Old 16th December 2020, 21:45   #99
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12.3V is the magical figure to remember for owners not using their car much !

Below this charge level is when the plate sulphation process accelerates.

So keep yer standard lead acid batteries charged or disconnect them when not in use.
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Old 18th December 2020, 19:53   #100
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I've posted a fair amount of information in the past about batteries and their welfare. -----I thought it might be a good idea to post up some information about the item that keeps a battery healthy.-----The Alternator.--I've read lots of guesses but what follows are the facts.---.

Attached Files
File Type: pdf Alternators (1).pdf (1.08 MB, 16 views)
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