Volvo RWD 700 Forum

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Rich Running Problem Fixed 700 '86

posted by  someone claiming to be John Plut on  Sun Apr 29 02:30 CST 2001 [RELATED]

I fixed the rich running problem on my '86 740 with the help of this board. It turned out being just the O2 sensor after eliminating the possibility that it was the fuel pressure regulator. I bought a new #13913 Bosch O2 sensor at Track auto for $40 and spliced the leads and gas mileage is back up to a respectable 23 mpg. BTW the sensor with Volvo connectors sells for $188.






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