Originally Posted by
corkguykev
It definitely sounds like something is interfering with your GPS reception. I have my GPS receiver mounted by a small window behind one of the back doors on my car and it works fine even though the roof of the car is obstructing most of its view.
I have noticed that if the car is parked for a few hours, it does take a bit longer to find the satellites again and this is made worse by driving off before it does find them but no worse than a normal satnav. I have heard the beep you mentioned after about a minute as well so this is normal but it does find them eventually if I drive off before the satellite icon stops blinking.
Best idea is to re-mount the GPS antenna where it has a better view TBH. If that fails, then it may be a problem with the antenna itself but I doubt that is the case.
One thing I have to ask is what did you mean by it giving your speed at 25%? It should give your speed at the full % of what you are doing or nothing. Particularly if you keep up a constant speed for some time. It can lag a bit, just like a normal satnav but it should catch up after a few seconds alright.
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