Volvo S70 Made from 1998 to 2000, this sporty model replaced the 850 sedan and instantly became a hit.

Car bogs after ~2.75k RPM

Old 08-23-2011, 12:21 AM
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Join Date: Jun 2010
Location: Allentown, PA
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Unhappy Car bogs after ~2.75k RPM

Question for yall! So my S70 n/a is experiencing some problems. Mainly, the car bogs completely after about 2.75 rpm, no power what so ever. It also has a rough idle when the car is started. Also has some hesitation. However, besides the sometimes occurring hesitation, the car feels like it has close to full power below 2.75 rpm. It has a code p0171 (running lean). There is no black/white/blue/orange smoke. It has a new o2, IAC, MAF, fuel filter, distributor, distributor cap, plugs & cables all very recently installed. So, who wants to hazard a guess at this?
Old 08-23-2011, 06:00 AM
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Location: Albuquerque, NM
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Usually the P0171 code means you have an open vacuum line somewhere. Have you replaced the flame trap or had the PCV system serviced lately?
Old 08-24-2011, 08:09 PM
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thanks for the input. i actually have one more code, which i forgot to mention. the code comes up EVAP large leak. i forget what the number is. one more tidbit - once in a blue moon, the car will run flawlessly when starting up, only to fall on its face again later.
and no, rspi, i have not had the flame trap system worked on since ive owned it. (bought at 145k, now 179k)

Last edited by catonakeyboardinspace; 08-24-2011 at 08:13 PM.
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