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Old 07-25-2007, 01:11 PM
pentoman pentoman is offline
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Join Date: Jan 2002
Location: England
Posts: 1,841
But the fuel mixture is set correctly - in fact ever so slightly rich.
Richening the car up would only get around the problem, not solve it.

This afternoon I tested the air flow sensor potentiometer. It checked out - 0.4V at the specified (near rest) position, nice and smooth up to 5V throughout motion. Also removed ECU and checked continuity for wires to EHA, WOT/idle switch, and air intake temp sensor. I'll check the coolant temp sensor when cold but think it's correct.

So I am 90% certain everything electronic is working correctly.
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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg
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