Ignition bits

Cars and Parts Wanted

Moderators: scimjim, Lukeyboy46, Roger Pennington, philhoward, erikscimitardemon, Terry Rickard

gtcse8
RSSOC Member
Posts: 2025
Joined: Fri Apr 24, 2009 10:11 am
Location: Steeton, Yorkshire Dales
Has thanked: 22 times
Been thanked: 136 times

Ignition bits

Post by gtcse8 » Tue Jun 04, 2019 5:33 pm

sabre1800ti wrote:
Tue Jun 04, 2019 4:25 pm
New units are easy to fit to a standard loom, only held by two little screws and just plugs out.
That`s assuming you can find a working one :lol:


Mark Wilson. See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s,1 & 1/2 GTC`s, SST 1800Ti & not a lot of sense

User avatar
sabre1800ti
RSSOC Member
Posts: 324
Joined: Wed Jun 27, 2007 4:32 pm
Location: Wirral,Cheshire
Has thanked: 11 times
Been thanked: 4 times

Ignition bits

Post by sabre1800ti » Tue Jun 04, 2019 6:15 pm

gtcse8 wrote:
Tue Jun 04, 2019 5:33 pm
sabre1800ti wrote:
Tue Jun 04, 2019 4:25 pm
New units are easy to fit to a standard loom, only held by two little screws and just plugs out.
That`s assuming you can find a working one :lol:
As I posted earlier, new ones are available from Rock Auto.
As you say Mark,I think you'd be very lucky to find a working second hand one.
I am wondering what symptoms pointed to a failed ignition control unit.


Doug Black
Ex-Factory 1993 Scimitar Sabre 1800Ti Mk 1

gtcse8
RSSOC Member
Posts: 2025
Joined: Fri Apr 24, 2009 10:11 am
Location: Steeton, Yorkshire Dales
Has thanked: 22 times
Been thanked: 136 times

Ignition bits

Post by gtcse8 » Tue Jun 04, 2019 7:24 pm

When the CAS started to fail on my 75,000mls SST I had all sorts of funny symptoms.

Sometimes it would just run rough from cold starting so I thought it was either fuel or injectors.
Then it sounded like it was missing, traced to the main loom not being plugged into the ECU fully, never did find out how it had come loose when the bloody thing was tightly bolted in.
Sometimes would just stop running, hot or cold, so I replaced the coil as no sparks were present, after fitting the new coil it started up perfectly, so I thought I had solved the problem.
Then it just stopped running completely, still no spark, so I borrowed a know good dizzy and that confirmed the CAS was faulty.
This was the point I learned that "Economical" CAS`es were like rocking horse poo in the UK and had a box full imported from the OE manufacturer.
Not once did I even consider the spark enhancer to be the culprit.
With the "Old coil back in, and a replaced New CAS in my original dizzy the car goes like I stole it and now I have "Cured" the missfire when the heater motor was running I`m a happy Bunny.
The "Missing" when the heater motor was running was surprisingly cured when I unscrewed the transistor unit to test a "Faulty" unit and after screwing mine back onto the coil mounting the missfire has not returned.

Car electronics can be a minefield and difficult to cure.
My 2l Rover 75 TDi started to play up last month, everything pointed to the In Tank fuel pump, so I pulled it out and removed a small amount of crap from the pump, the car then started and ran ok for a few days then the fault returned.
I put my OBD2 tester on the car and this was inconclusive, giving me a few fault codes, so I went through a "replace and test" phase and it eventually turned out to be the 18month old replacement Mass Air Flow unit that was giving erroneous readings so the ECU was altering the fuelling to compensate.
The 18month MAF was fitted due to loss of power and "excessive" smoke at MOT which was traced to a leak in the intercooler system.


Mark Wilson. See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s,1 & 1/2 GTC`s, SST 1800Ti & not a lot of sense

User avatar
sabre1800ti
RSSOC Member
Posts: 324
Joined: Wed Jun 27, 2007 4:32 pm
Location: Wirral,Cheshire
Has thanked: 11 times
Been thanked: 4 times

Ignition bits

Post by sabre1800ti » Tue Jun 04, 2019 8:21 pm

That's why I wondered what led to the ignition control being considered faulty. As you say a failing CAS can give many intermittent symptoms which can lead to wrong conclusions. I have run these engines for over 30 years and never heard of an ignition control fault, that doesn't mean it doesn't happen, but I would always check CAS first..
I had to replace one a few weeks ago, didn't even bother checking anything else, although cabling was shot it was a duff CAS..
My first encounter with CAS problems was many years ago on a S12 Silvia which was still being maintained by the main dealers, it took them 4 weeks to find the problem and then Nissan UK would not supply the CAS and insisted on fitting a new distributor, they did make a hefty contribution to the cost


Doug Black
Ex-Factory 1993 Scimitar Sabre 1800Ti Mk 1

User avatar
peter freeman
RSSOC Member
Posts: 9960
Joined: Thu Aug 31, 2006 12:12 pm
Location: Newcastle
Has thanked: 9 times
Been thanked: 358 times
Contact:

Ignition bits

Post by peter freeman » Tue Jun 04, 2019 8:52 pm

Without "special" test equipment it is difficult to check a Darlington pair transistor and I suspect that is what is used, the only safe ( and cheapest way ) way is by substitution. Apart from two transistors in the can there could also be resistors - for example.



User avatar
AJL Electronics
RSSOC Member
Posts: 7844
Joined: Fri Oct 17, 2008 8:49 pm
Location: Gloucester
Has thanked: 46 times
Been thanked: 241 times
Contact:

Ignition bits

Post by AJL Electronics » Tue Jun 04, 2019 10:54 pm

peter freeman wrote:
Tue Jun 04, 2019 8:52 pm
Without "special" test equipment it is difficult to check a Darlington pair transistor and I suspect that is what is used, the only safe ( and cheapest way ) way is by substitution. Apart from two transistors in the can there could also be resistors - for example.
Not sure why Peter? It would look like a single transistor on a simple multimeter test and a high gain single transistor on a transistor tester. A Darlington pair in my experience is purely two transistors on the slice, nothing else.


Yes, we can mend your Scimitar!
Order your Scimitar parts any hour of the day at http://www.classicmicrocars.com (member's discounts).

Fancy a holiday in Gael, France? http://www.ianrhu.com

There is no point trying to teach a pig to sing. It doesn't work and it annoys the pig.

User avatar
peter freeman
RSSOC Member
Posts: 9960
Joined: Thu Aug 31, 2006 12:12 pm
Location: Newcastle
Has thanked: 9 times
Been thanked: 358 times
Contact:

Ignition bits

Post by peter freeman » Wed Jun 05, 2019 8:12 am

Depends on what test equipment you have, it could be halve of the pair short circuit - base to emitter for example which would be difficult to diagnose unless you have a good one to check against - in which case easier to try a.n.other anyway



Jasper53
Posts: 61
Joined: Mon Jun 03, 2019 2:08 pm
Location: Yorkshire
Been thanked: 3 times

Ignition bits

Post by Jasper53 » Wed Jun 05, 2019 10:36 pm

Anyone fitted one of the Farnell MJ10012 in the original system? I assume the connections will be soldered on rather than the unit being “plugged “ in to a socket arrangement? Will mean digging out the black stuff. Will give one a go if nowt else turns up as I’m starting to get grief about dead projects kicking around for ever.
Cheers, Rob



User avatar
peter freeman
RSSOC Member
Posts: 9960
Joined: Thu Aug 31, 2006 12:12 pm
Location: Newcastle
Has thanked: 9 times
Been thanked: 358 times
Contact:

Ignition bits

Post by peter freeman » Thu Jun 06, 2019 7:36 am

As I bought one for myself it will be nice to know if it works - assuming that it is your problem in the first place



Jasper53
Posts: 61
Joined: Mon Jun 03, 2019 2:08 pm
Location: Yorkshire
Been thanked: 3 times

Ignition bits

Post by Jasper53 » Thu Jun 06, 2019 8:58 am

We tried a coil pack leads cap and rotor before having the daft transistor thing checked by a radio guy with the gear to do it. Came back as dead. As we can’t get an original we are a bit stuffed. Might pull the old one to bits anyway just for the hell of it!



User avatar
Corky
RSSOC Member
Posts: 11233
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 255 times
Been thanked: 215 times

Ignition bits

Post by Corky » Thu Jun 06, 2019 9:26 am

Originals are readily available, it just depends whether you’re prepared to pay £100+ for one? RockAuto have them in stock and ready to dispatch.

It is a lot of money for what it is, but I’ve paid just as much for a simple relay from Mercedes.

On the plus side, it should get your car going :D


Steve
Current:- SS1 Ti RG sprint car, Honda S2000, VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

User avatar
sabre1800ti
RSSOC Member
Posts: 324
Joined: Wed Jun 27, 2007 4:32 pm
Location: Wirral,Cheshire
Has thanked: 11 times
Been thanked: 4 times

Ignition bits

Post by sabre1800ti » Thu Jun 06, 2019 10:04 am

Corky wrote:
Thu Jun 06, 2019 9:26 am
Originals are readily available, it just depends whether you’re prepared to pay £100+ for one? RockAuto have them in stock and ready to dispatch.
Originals are readily available, it just depends whether you’re prepared to pay £100+ for one? RockAuto have them in stock and ready to dispatch.
Mentioned RockAuto earlier :D
Here are some other part numbers, but all seem only to be available via USA.
WELLS JP197
AIRTEX 6H1199
CARQUEST 55-1699
STANDARD MOTOR PRODUCTS LX-878
NISSAN 22020-17F10
ACDelco E1971A
GM 88921611
ECH TP315
BWD CBE708


Doug Black
Ex-Factory 1993 Scimitar Sabre 1800Ti Mk 1

Jasper53
Posts: 61
Joined: Mon Jun 03, 2019 2:08 pm
Location: Yorkshire
Been thanked: 3 times

Ignition bits

Post by Jasper53 » Thu Jun 06, 2019 10:59 am

Anyone know a UK source for the MJ10012 transistor? Got the gizmo in bits and will be easy to fit. Worth a go I think. Listed on evil bay but you never know what you are getting so not keen.



User avatar
philhoward
RSSOC Member
Posts: 25269
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 64 times
Been thanked: 632 times
Contact:

Ignition bits

Post by philhoward » Thu Jun 06, 2019 11:21 am

RS Components?


Phil Howard
Scimitarweb Forum Admin
SS1 1600 Rooster Turbo; Sabre Mk1.5, Sabre Mk2
Previous: SE5/5a/SS1 No.1/SS1 Rooster/SS1 1800Ti/SE5a 24 Valve
http://www.ss1turbo.com
Never try and argue with an idiot. They drag you down to their level, then beat you based on experience.

User avatar
sabre1800ti
RSSOC Member
Posts: 324
Joined: Wed Jun 27, 2007 4:32 pm
Location: Wirral,Cheshire
Has thanked: 11 times
Been thanked: 4 times

Ignition bits

Post by sabre1800ti » Thu Jun 06, 2019 11:36 am

Farnell's have them.


Doug Black
Ex-Factory 1993 Scimitar Sabre 1800Ti Mk 1

Post Reply

Return to “Wanted”