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1998 Volvo S70 Question: Stall during idle, seems to "jerk" during acceleration around 60 mph~70 mph

 

Question

hhsiao, 2.3L 5 Cylinder Turbo, Germantown, MD, June 04, 2010, 05:19
 Rookie

This started about 3 weeks after the "Check Engine" light came on. I haven't gotten chance to go check out what the code it's throwing. The engine rev at around 900 rpm during idle, I frankly haven't own the car for long enough to remember what it used to idle at.
Basically I start the car, and if I leave it idle it would stall after less than 1 minutes. Also when I am cruising down the highway, it would occasionally jerk a little as if it's losing power? (but I didn't really lost power).
When I came to a stop light, and try to go again, the engine seems like it was going to stall, but fortunately it didn't.
I am taking it into a shop to check it out, but would love opinion as to what may be wrong with it.

1 Answer
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  • Answer #1

    Bret Bodas from RepairPal Test Shop, June 04, 2010, 09:04
     Master

    Without seeing the code it's hard to say, but based on my experience with these Volvo's, the Mass Airflow Sensor (MAF) failure and vacuum leaks are fairly common. If you can post the code that would be a big help and I could give more info.
    Good Luck

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    hhsiao, June 04, 2010, 16:57
     Rookie

    Wow Bretb, you really are master! I just got the codes, there is 2:
    1) P0455 Evap Emission Leak (Large)
    2) MAF or VAF A circuit high input
    The Advance Auto Part person mention these two may be related, but hmm I am sure you know more than I do. Thanks in advance for the help!

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    hhsiao, June 04, 2010, 16:57
     Rookie

    Wow Bretb, you really are master! I just got the codes, there is 2:
    1) P0455 Evap Emission Leak (Large)
    2) MAF or VAF A circuit high input
    The Advance Auto Part person mention these two may be related, but hmm I am sure you know more than I do. Thanks in advance for the help!

    Reply
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