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O2 Sensor problem?

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
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RogueWave
Posts: 8
Joined: 23 June 2012
Year and Model: 1996 850 GLT
Location: Columbus, OH

O2 Sensor problem?

Post by RogueWave »

Hey guys,

So my 96 850 GLT is having some problems with an inconsistent idle. I have a code scanner and it keeps pulling a P0103. I checked the MAF by unplugging it and running the car without it but the wandering idle persisted. I replaced the plugs with OEM Volvo plugs, distributor cap, plug wires, and distributor rotor.

The OBD-II reader states that the car would be fail the emission test and the car does run a bit rich. You can smell a pretty rich scent of gas when the car is on. From everything I have read on here, I feel that the O2 sensor may be what is causing this problem with the stalling and inconsistent idle. I just wanted to get an outside opinion before I throw down the money to buy one.

What do you guys think?

Thank you
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bensr20det
Posts: 20
Joined: 15 August 2012
Year and Model: 1996
Location: Louisville Ky

Post by bensr20det »

Did you replace the O2 and if so did it work?
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