I?ve got an 94 GL 940 that lately suffered from a total enginefault. Found the problem. But afterwards my idle is very bad, rough aswell. It smells petrol and emissions shows unburned mixture. Everything you guys are gonna post here is already done and checked. I?m going to change ECU or the EZK. On high rpm it runs good enough. Only the idle is my problem. Could those two fuses on + battery be corroded?