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Help please check engine/first gear only V70-XC70 2001

posted by  someone claiming to be John R on  Tue May 15 14:05 CST 2001 [RELATED]

I would appreciate advice, urgently. I started my car (2001 XC), already warm, this evening to go and get gas. The gas was running low with 60 miles still indicated to empty. First, I noticed that the orange auto position light was not working (auto mode and geartronic). At the same time, the symbol appeared for the emission control problem with the warning: "emission system service required." Then I found that there was a third problem: the auto transmission would not shift out of first gear in auto mode. All these three things happened at the same time after the car had been just fine half an hour before when I parked it.

After stopping the car and restarting the engine 2 or 3 times, the gear postion lights reappeared and the gears now shift. I have filled up with gas but now am concerned:

1. Why did the emmission warning came on - the gas cap was on tight since the last fill?

2. Why would an emission indication (whether real or spurious) cause the transmission to stop working and the position indicator lights to go off?

3. Can I safely run the car until I can get round to going to the dealer given the combination of problems?

Apart from warning check indication (still on), the car seems to have resumed its normal running, even before I filled up with gas.

Thanks in anticipation of a good samaritan sorting out my worry.







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    Re: Help please check engine/first gear only V70-XC70 2001

    posted by  someone claiming to be Planman on  Tue May 15 15:52 CST 2001 [RELATED]

    I can only guess, but it seems the design of the 2001's is much like when you have a problem running Microsoft Windows and your computer "freezes up" or "throws a blue screen" etc, the best thing to do is to either reboot or do a complete shutdown and re-start the computer--this seems to clear out whatever the problem was(most of the time!). It seems that when you have some of these unexplained problems with the 2001 Volvo models, if you turn the engine off and/or get out and lock /unlock the car, this "reboots" the computer system and tends to clear out these odd problems--just like with Microsoft Windows.--This worked when I was having weird door lock, gas door lock, sunroof control illuminated switch, etc. problems a few months ago.

    Anybody else agree with this observation????







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      Re: Help please check engine/first gear only V70-XC70 2001

      posted by  someone claiming to be bob on  Tue May 15 17:30 CST 2001 [RELATED]

      Yes. Everything on the 01 models is controled by individual processors, and they are all linked to a central module. Comunication between modules sometimes gets interrupted and strange things happen. Often "rebooting clears up intermittent problems, only to resurface later. Some problems are corectable by software downloads, others are wiring or hardware related. There are numerous trans faults that will set an emissions code. The engine and trans control units are closely related and a lot of information is exchanged constantly. As long as the warning lights are out, it's safe to drive, but get it checked out as soon as possible.







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        Re: Help please check engine/first gear only V70-XC70 2001

        posted by  someone claiming to be John R on  Tue May 15 17:58 CST 2001 [RELATED]

        Thanks. Please note: the warning light and check display are still on. It's just that the transmission reset itself.






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