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Check the O2 sensor type (edit/update) 700 1990

uid 18083's pic
posted by  lucid on  Thu Nov 29 06:48 CST 2007
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

The 2-2-1 is O2 sensor related, and is the cause of the Check Engine Light. It may also be causing the bad mileage if the "newer" looking O2 is the wrong (Bosch type) sensor.

Look at the leads at the firewall (2-pin plug), if the wires are both White [I think] it's wrong. In any case, the Titania-based sensor that the Queen demands has Red and White wires, plus the Black signal wire.

These sensors are made only by NTK, and cost about $99 plus shipping at Sparkplugs.com.
Click the Applications FIND button and you'll see your car listed.

Ignore the 3-2-1 code. It's the residual effect of a Cold Start fix for '89 and '90 Regina FI. Post back for details if wanted.


--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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