"R. P." <r_pol12gar@hotmail.com> wrote in message news:<sqWdnXwQeKPSGpbd4p2dnA@comcast.com>...
> I noticed lately that the effective range of my garage door opener
> is greatly reduced when the engine is running vis-a-vis when it is not.
> This was not always the case and wonder if it may have something to do
> with some kind of electrical shielding removed or disconnected during
> one of the regular maintenace visits at my Honda dealer. The car is a
> '94 Accord LX model that otherwise runs just fine.
> The only reason I can imagine for this behavior is that somehow the
> electro-magnetic field around the running engine is interfering with the
> garage door opener's RF signal but I'd like to hear from anybody
> knowledgeable on this subject. I have no idea what exactly a service
> technician could have done to cause this effect.
>
> Rudy

Is the transmitter one that is built into the visor or roof console or
is it a standard garage door opener transmitter that is normally hung
on the visor w/ a clip? If it is built-in I would guess that something
like a short is drawing off the transmitter power when the car is
running. If it is a stand alone transmitter the transmitter battery
could be weak (do not use alkaline batteries) or the transmitter could
be slightly out of tune and the running engine blocks out the weak
signal. There is also the chance that your receiver in the garage is
sending out a weaker signal then what it use to.

Doordoc
www.DoorsAndOpeners.com