Cold start problem

Wow! This is very interesting.

What would be my option to get the cold start to work without changing the ECU? Adding a thermo-time switch? Or adding a momentary grounding switch that the driver can push while cranking?

I wonder if this also would account for another problem that I have had with this car.

About a year ago, I tried to convert this car to the 123 electronic distributor without success. After much testing of two different 123 distributors, my findings found that the switching signal is opposite of what the 123 distributor creates. I don't remember which way it was, but the 123 distributor would not trigger the injectors. The original points distributor works fine and is still installed because of this.

Thanks all for this help.

Kurt

As a side note, the current MAP installed is 0 280 100 010.

Any help or ideas locating the correct ECU for my application would also be appreciated. I would like to give my client the option of getting this put together with the correct parts.

Thanks,
Kurt

Hi Kurt,

easiest way is to install 0 280 000 017 ECU. I will check whether I have one. I am not sure. Otherwise you have to modify wiring harness, install VDO thermo time switch and find a 035 MAP sensor. And you loose over-run shutoff. I think I once compared 017 and 034 ECU and found that they are very similiar.

And just forget 123 ignition. Use Pertronix / FullMax / Powerspark to replace ignition contact with a transistor. That is best solution. 123 has a very interesting way of double firing trigger contacts (on Volvo - thats where i measured it). I have contacted them for an explanation but I could never get one.

Hi Kurt,
the 0 280 000 017 is available in the U.S.A. This would be the easiest way... the ...009 seems to be available only in Australia <high-priced>.
www.ebay.de/itm/234206710490?hash=item36...a:g:QM4AAOSwZm5hQPna

Regards
Norbert

Hi,

I would not recommend 009, it has no idle-run rheostat.

Thanks for the help and advise. Let me know if you can source the correct ECU for my application. I will be looking into some of my more local sources as well as the web.

Kurt