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No Posted by Ari [Email] ![]() ![]() In Reply to: Is it Normal?, Rmc, Wed, 9 Feb 2005 20:04:45 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I'm not sure where you made the disconnect. The O2 sensor signal drives very little current, so you should see the same voltage at both ends of the wire. So it's hard to come up with a way to measure different voltages on different ends of the same wire. Need more information on where you made the disconnect. But I think this may be a red herring.
Running the car with the O2 sensor disconnected will result in incorrect measurements. A reading of 0.5 is the 'ideal' mixture, and it's unlikely the ECU can reach that without the feedback from the O2 sensor.
Question - you've got a '88 - so that's got a -005 AMM, the kind that's adjustable. Have you tried adjusting the AMM? How old is the O2 sensor? It may just be getting old. But the AMM has more control over fuel mixture than the O2 sensor.
One last trick (for tonight, anyway). Add a ground wire from the body of the O2 sensor to chassis. The body of the O2 sensor is the ground return, and a bad ground there can cause havoc.
posted by 12.76.132...
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