Pre cat ECU

[wargriff]

Have just found out my electrical problem is due to my ECU frying its 2 negative feeds.

Are these ECU's easy to buy and at what sort of figure ?

Its a 14x cru from memory, is this the same as the range rover one or did TVR play with it at all ?

Marc

[Barreti]

14cux isn't it?

I was going to try to answer this, but realised I'd probably be talking bks so I'm afraid you'll have to wait for someone far more qualified

[culminator]

And the fact that your mind is probably fixed on big American engined component cars assembled in Leicestershire, eh Barreti? ;-)

[Bluebottle]

culminator said:

And the fact that your mind is probably fixed on big American engined component cars assembled in Leicestershire, eh Barreti? ;-)

I wish they would fit in my garage , I guess i could alway knock the garage down and rebuild a bigger one

[LordGrover]

Not sure if it's any help, but the various LR ECUs shown here: click

[zombeh]

wargriff said:

Its a 14x cru from memory, is this the same as the range rover one or did TVR play with it at all ?

It's a 14cux, TVR replaced the contents of the rom, all tvrs have socketed roms but I don't think all rover ones do, just get a rover one that's got a socket and swap the chips.

I think it's the same as any hotwire range rover but there may be age related differences, when I was chasing a misfire on my v8s and tried a different ecu (the one from dnb's 500) his had a bodge wire fitted in it where they'd decided to fix something but not redesign the board, The car ran exactly the same with the griff ecu (with my rom chip fitted) even though his had all the lambda nonsense in it for cats.

[blitzracing]

Far as I can tell there are only 2 basic ECU types out there. There is a major circuit change around mid 1991, and although all the 14CUX ECU's can run both catalyst and non catalys maps, if you swap fuel chips between these different revison boards the car will run really badly. If you drop me an email, Ill send you a pdf on how to identify the difference (Thanks to Mark Adams). The early Lucas ECU's (up to around 1992-3 did not have pluggable chips, so TVR had to modify them by cutting the standard chip out and fitting a socket.

More generally, if you look at the external sensors these have not changed at all function wise over the whole life of the 14cux, so you can swap ECUs around with doing any damage, although I think some extra functions may have been added to the later ECU's but the TVR may well not make use if them. I also suspect many of the part number changes are also down to the case fittings. Cost wise sensible prices are between £25 and £60 for a Rangie unit, so dont be fooled by paying "TVR" prices.

Mark

[dnb]

If it's just track damage to the ECU, then chances are it can be fixed with a soldering iron and a selection of paperclips.

[wargriff]

Hi all and thanks for help.
I have taken the whole unit to a local company that repairs them, the cost is negligable and it will be back in less than a week.

Thanks for help

[GreenV8S]

dnb said:

If it's just track damage to the ECU, then chances are it can be fixed with a soldering iron and a selection of paperclips.

How do you burn out tracks on the ECU without also having a component failure of some sort to cause the extra load?

[scoule]

Did you work out why it fried? Was there a bad engine earth causing the engine to earth via the ECU?