My mechanic found me a loaner ECU which I'm running at the moment. World of difference so it looks like i need a new one. Oh woe!

Haven't yet tried to measure the current at the ICV, I'm thinking perhaps the problems I had earlier are linked to the failing ECU, so may try that at the weekend.

EHA current at idle is now 3ma but am seeing no response to adjustment at the lambda tower. should I be?

Current at 2000 rpms is 0ma, pretty much, which I take to be a good sign.

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1987 300e manual 250,000 km (sold)