Club 80-90 Forums

251 907 393 A or C

The one that lives behind your RH rear lamp and is so often forgotten!

I am making enquiries about getting these repaired as I have two dead ones and no spares seem to be forthcoming.

There must be lads of duffers out there being hoarded, they all need to get back in circulation.

I have received a promising response, so I'll box up a DJ engine harness, a couple of idle valves and the two duff controllers and see what they make of it all.

I'm still keeping my eye out. I'm certain I wouldn't have binned it and both my 2.1s were running fine when removed.
I found lots of bits of harness in a box the other day so I'm getting warmer I think.

I have been slowly ( over years ) acquiring DijiJet parts to eventually switch over from carb to injection.

Part of my hesitation is that I am in no position to know if any of the parts are in working order - AFM, Idle control, ECU, and even the harness. 

If this company can offer a test/repair/refurb service of those components, I might just get motivated for the project and get the last parts. 

silverbullet wrote: ↑20 Jul 2026, 12:31

Looks like the beige cap on the right has crapped itself and a few components have been running hot to start with...

Yes thats the early suffix A, there's a cap on the other board that has also had a blurt. Strangely the suff C I had been using shows no signs of component distress or dry joints but it won't drive the idle valve either.
Might be that the transistors have failed.
Suff A and C have quite different board layouts and component count, but do the same job (as do suff B and D for the MV with Digifant)

A on left,.C on right

i was chatting with copilot about this, and a full re-engineer with just a modern microcontroller and as few simple components could replace all the analog components. it seemed to have a fair idea of what was needed, what inputs are provided and the PWM drive for the ISCV.

Discrete components are easy to repair though. I don't trust Artificial Idiocy to return meaningful results on this sort of thing, much prefer to use human experience and wisdom.

Received the invoice for repairing the two Digijet idle controllers that I sent to Avilec.
In the event, both needed repairs to the idle air valve driver components. They noted that suffix A and C have not only different board architecture but also function rather differently to get a similar effect.

Bottom line: £120 each + post and vat...not including the core value.

Which doesn't really make them a commercial proposition to my eyes (I'd have to mark them up otherwise for business) but they are repairable which is good news.