Complexity of modern classics
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crankedup

Original Poster:

25,764 posts

272 months

Saturday 12th January 2013
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I'm sure this has been discussed before but felt it may be worth another airing.
Recently my Bro's RangeRover P38 model has developed an electrical fault which he himself is unable to fix. Took the car to two local garages that I know from personal experience are both top rate garages. Both declined to take on the job of identifying and fixing the electrical gremlin.
From this experience it signals to me that modern classics to be are just far to complex for the average enthusiast to take on. What do you say?

MajorProblem

4,700 posts

193 months

Saturday 12th January 2013
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What up with it?

randlemarcus

13,646 posts

260 months

Saturday 12th January 2013
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Too complex to be worth faffing about with, full stop.

Presumably your garages declined as their hourly rate means that diagnosing the rats nest on an old RR would mean a bigger than value bill? Live with the fault, or an electrical restoration. I know which way I would go...

crankedup

Original Poster:

25,764 posts

272 months

Saturday 12th January 2013
quotequote all
Thanks for replies, agreed about his Rangi although its a tricky fault to live with. Its the temp' gauge fluctuating into the red over heat, yet the engine is fine when we open the bonnet for a look. I think he may fit an aux' temp gauge to monitor the temp' now.
But what of the other classics in the making like some of the BMW, Pokers, merc and so on. They can be complex to fix so good cars destined, through their complexity to be scrap.?

randlemarcus

13,646 posts

260 months

Saturday 12th January 2013
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Comes down to the time honoured Bargain Barge formula, and fix vs value is what makes a proper classic different from the last Marina SE.

dbdb

5,175 posts

202 months

Saturday 12th January 2013
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crankedup said:
Thanks for replies, agreed about his Rangi although its a tricky fault to live with. Its the temp' gauge fluctuating into the red over heat, yet the engine is fine when we open the bonnet for a look. I think he may fit an aux' temp gauge to monitor the temp' now.
But what of the other classics in the making like some of the BMW, Pokers, merc and so on. They can be complex to fix so good cars destined, through their complexity to be scrap.?
It probably depends on the exact make and model of car concerned - and the age line you draw to define a 'modern classic'.
Range-Rovers do have a reputation for difficult electrics - I don't have any experience of them, so I don't know whether it is justified.

I have a Jaguar XJ40 though which is fairly easy to work on and fix - electrically or otherwise, though it does help that the XJ40 has excellent online forum help available. It has modules certainly, but these are all fairly simple and fully repairable. I don't think the Jaguar XJ40 is difficult to fix - it is just that the cars are now so cheap that many owners cannot be bothered to repair them.

More recent 'modern classics' may be too complex, but I have no experience of them.

V8 FOU

3,023 posts

176 months

Saturday 12th January 2013
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A P38 Range Rover isn't all that complicated. Each system has its own ecu. Engine, gearbox, hevac, seats. windows etc. So that makes diagnosis ok. I've never had any problem fixing my P38 or any of my customers.
Your problem is probably a poor connection somewhere. Big advantage of a P38 is the number of them being broken. Why not try a s/h coolant sensor for a start? Then perhaps a gauge?
Have you actually measured the temp of the engine/water?

Flatinfourth

591 posts

167 months

Saturday 12th January 2013
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The P38 Range Rover is a demonstration of how to take a fantastic idea and ruin it. The vast array of electrical gremlins makes ownership such a stressful affair that any journey is tainted by systems that do not work coupled with endless beeping from the alert system. The diesel is an uneconomical and underpowered unit, the petrol has a weak core.

Because of all of the above, unlike the Range Rover Classic and Discovery 1, the P38 will never deserve any kind of classic status, it is simply a cheap old barge. A four wheel drive Citroen XM.

sunbeam alpine

7,244 posts

217 months

Saturday 12th January 2013
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crankedup said:
Its the temp' gauge fluctuating into the red over heat, yet the engine is fine when we open the bonnet for a look....
Isn't that one if the first warning signs for the slipped liner problem?

I agree with you about the annoying complexity of modern vehicles. I do as much as I can myself, but find it more and more challenging, and also one of the reasons why I prefer to run older vehicles.

Hooli

32,278 posts

229 months

Saturday 12th January 2013
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P38s weren't were fixing when new! they took LR's ability to make cars that fall apart to a whole new level. Oddly enough, I still like them though.

furrywoolyhatuk

682 posts

183 months

Sunday 13th January 2013
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There are many differnent causes, but it could be a faulty earth. Try cleaning/replacing the earthing straps perhaps?

tapkaJohnD

2,000 posts

233 months

Sunday 13th January 2013
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I Googled for a picture of this sensor, and sure enough, apart from the connector it looks exactly like the sensor for my much older classic (70s Triumph). The sensors that are being supplied today are often very substandard and go 'off' quickly. And if it's still the OE sensor it has had time to become faulty.
Suggest you take it out and test it, in a water bath that you can heat from cold to boiling, while measuring the resistance of the sensor and the temperature of the water. There should be a smooth curve of response - see pic. If it's all over the place you know the problem.



Because the sensor uses change of resistance with temperature, it is sensitive to voltage, which will change with the speed of the engine and the state of the battery. So my classic uses a "voltage stabiliser" to keep the voltage at the sensor to an average of 10V. I know that some older Landies use exactly the same part, but not if a later one such as yours does. If it uses a cheap old bimetallic strip one (little metal box, with a brown plastic back) then those can go off eventually too. Modern solid state versions (black plastic box) are more reliable.
For images, see: http://www.ebay.co.uk/sch/i.html?_trksid=p3872.m57...

JOhn

crankedup

Original Poster:

25,764 posts

272 months

Sunday 13th January 2013
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Thanks to all respondents, when I next see my Bro' I will be passing all of the info' onto him. (hope that one day he may buy his own PC)

na

7,898 posts

263 months

Sunday 13th January 2013
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tapkaJohnD said:
The sensors that are being supplied today are often very substandard and go 'off' quickly.
take that for many parts, some electric parts got so bad that they had to be improved and were - even some tight-fisted classic owners realised that no matter how cheap they want the parts to cost them occasional these parts needed to work, not often of course as the most of the classic cars are barely used