The Renault number for the float set is as above. I wonder what I can use in stead of the ceramic disc. Maybe a fan resistor.

if you can find a PTC (positive temperature coëfficient) resistor with sufficient power, say 5 watts, that would be OK indeed.

perhaps some old TV set can be scavenged? I know these have a strong PTC to drive the demagnetizing coil directly from mains power.

With a tag like antiekradio i don't doubt you but how do i recognize this component and is 12v ok. What I like about the fan resister idea is that I can control the on/off via the fan.

Ok, I wrecked a junked microwave oven and found a beatifull ceramic resistor with spade connectors. It is designated as 10 Ohm 20 Watt. As predicted, it draws 1.2 amp. I attached it to the carby body and ,believe it or not, it gets rid of the flat spot and stalling after about 5 minutes. My only concern is that it is always on. But Volvo do supply the genuine pre-heater relay for £21. The part number is now 1270180. Don't let anyone tell you this part is only necessary in icy conditions.

pretty cool got a picture?

Legend!!! Thats got to have a pimp value to fix your car with a microwave! Well done that man

Two things: Do you mean the microwave part or the original. How do I attach a jpg?

You need to have somewhere to host the picture, as the forum doesn't currently support attaching images. A lot of people use photobucket, which is free
http://photobucket.com/

Here is the original pre-heater: http://i154.photobucket.com/albums/s253 ... ture-1.jpg Other to come.