I have a 1.8 16v ecu which had a chip carrier fitted long time ago ,the soldering of the carrier was poor as far as i can tell . Fitted a standard clio williams eprom i bought and tried the ecu on my renault 19 now fitted with the williams engine .
As soon as the engine is started up the revs would gradually go up and up
where i would have to kill it around 4-4.5k
I put this down to the soldering which i believed to be poor ,so i sent it to Kj16v on this website for him to solder it professionaly . He returned the ecu back to me after resoldering the carrier but i still have the same problem as before ,the revs just keep going up .
I checked the ecu very carefuly and there is no visible damage anywhere inside . I also have a standard 1.8 16v ecu and once this is fitted to the same car ,it idles perfectly fine so its not a matter of wiring etc .
Anyone had this sort of problem before ??