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Date: Mon, 20 Sep 2004 19:00:45 +0100
From: "Mike P" <>
Subject: Re: Why is my  car running so rich? C900

> > Mike P wrote: > > > My car - 1984 T16 - appears to be running rich. The plugs are very sooty, > > and at most I seem to get abour 60 miles out of 10 of petrol, way worse > > than > > my previous T16. I usually got around 90 or 100 miles from that out of 10 > > (12.5 litres, standard 95 ron U/L) > > > > So far, I've set the timing correctly. I've fitted new filters changed the > > oil, and replaced the plugs (NGK BCP7EX). > > I've cleaned the throttle body, reset the idle speed and flushed the > > intercooler. I've also cleaned (with brake cleaner) the AMM and reset it > > back to 380Ohms as stated by Haynes. The car runs a lot better, but it's > > still uneconomical. Even when I stay off the boost :-( > > > Setting the AMM to 380 is not the correct procedure. Read the o2 sensor > and set the AMM according to its response to get an average of 0.5V at > the o2 sensor. If it is dead, or the fuse blown, or not connected, this > could cause your problem. Check these next. > > KeithG According to the Haynes Manual it is the correct procedure. I don't have an 02 sensor either. It's a 1984 C900 T16, which in the UK means it doesn't need a cat. Anyway, I cleaned the AIC out, seems to have solved the problem and the car is much smoother to drive in traffic. No visible fumes out the tailpipe, and it picks up well. Mike

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