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ECU issues 200 1993

posted by  pageda on  Wed Sep 4 15:50 CST 2019
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last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

There should be a wider range of voltage cycling on the O2 sensor, .2 - .9 volts yours may be tired!. You can buying for a mustang (Bosch 13913) and solder on the Volvo connector for about $40. They work fine and you may be able to find them on ebay for less.

You can guesstimate fuel pressure by seeing if you can pump a quart of gas at the rail in less than 30 seconds it's probably OK. Disconnect the hose at the rail and pump into a milk gallon container.
Dan






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