Perhaps, but perform several simple tests.
1) Make sure eject the sleeve or card, power the Pocket PC off, insert the
sleeve or card and power on the Pocket PC. Now perform a soft reset.
Wait for approx 30 secs for your Pocket PC to stop loading all it's
startup programs and let it settle down. Now load the GPS Software,
Power on the GPS device (if there's a software power button), and now
wait. You should find this is a better way of cutting down the
2) Make sure you are outside, and not hindered by the car roof or windows,
and that you are not near a tall building or tree. Once you've
obtained your First Fix, take your GPS unit into the car and you should
have a better fix in starting your journey. If you start losing fix
since you've entered your vehicle, it could be that you have a coated
windscreen, or there is electrical interference, and may require an
external GPS antenna.