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Re: power antenna quit operating
Most power antennas are an easy thing to remove you just need to be able to get to the bottom to undo the nut holding it and then slip it out through the top. It is getting to the underside of the antenna that can be hard because in most newer cars you have to remove most of the underside moulds in order to get to them.
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Remove rear retaining screws of RH front wheel splash shield for access to antenna lower retaining bolt.
Remove lower retaining bolt.
Remove radio antenna nut (18865) from top of motor tube and remove electric antenna through fender/splash shield access.
Disconnect signal cable and motor wire connector(s).
To install, reverse Removal procedure.
Tighten top radio antenna nut to 6-8 Nm (54-70 lb-in).
Tighten lower electric antenna retaining bolt to 5.8-7.8 Nm (51-69 lb-in).
Check operation of electric antenna and radio chassis .
Automatic Electric Antenna
NOTE: A power antenna mast which is bent or broken can be replaced without replacing the motor and tube assembly. Removal
Remove radio antenna nut (18865) and radio antenna stanchion (18919) .
Loosen retaining nut inside tube using 14 mm (9/16 inch) socket, and slide nut part-way up mast.
Raise antenna to run plastic drive wire at bottom of mast out of motor. Note direction of teeth on plastic drive wire.
Saw off damaged portion of antenna mast. Remove burrs from mast and slide nut and contact tube off stationary tube.
With the teeth on the plastic drive wire facing toward motor on antenna, push end of plastic drive wire of replacement mast assembly down into tube. Push it around curve at bottom of tube until end enters drive mechanism.
Run motor down while pushing on plastic drive wire until about 305 mm (12 inch) of wire has been drawn into the tube. Stop motor and insert bottom of antenna mast into tube. Lower mast.
Slide contact tube and radio antenna nut down antenna mast. Tighten nut to 0.45 Nm (4 lb-in).
Raise and lower antenna several times to ensure proper operation.
Give these instructions a shot. Might be too generic but might be enough to get you going.
Removing Original Antenna
Activate the antenna switch to the up position.
Using the wrench or needle-nose pliers, loosen and remove the original retaining nut on the base of the antenna mast.
Gain access to the underside of the area where the antenna is located.
Remove the bracket or brace that is below the hole and holding the antenna in place.
Remove the mast.
Find the motor that controls the antenna mast. Generally, power antennas will have a constant 12-volt lead and a ground lead. The ground lead will be grounded to the panel next to the motor.
Remove the ground lead from the panel.
Pull out the antenna coaxial cable.
Unplug the coaxial from the extension coaxial cable.
Remove the original antenna coaxial cable. Note the route the cable follows.
Installing the New Power Antenna
Inspect the fender area where the antenna mast will be mounted for rust.
Clean the area before installing the new antenna.
Plug the new antenna coaxial cable to the extension coaxial cable. (On some General Motors and Ford cars you may need an adapter to mate the 2 cables together. Car audio retail stores sell such an adapter.)
Plug the new antenna's coaxial cable into the radio's chassis antenna jack if there is no extension coaxial cable. Tie or tape the string you put on the extension cable to the new antenna coaxial cable. This assures that the 2 cables stay together as you route them to the antenna mount in the fender.
Connect the power lead of the antenna to the power antenna lead on the radio.
Connect the 12-volt constant lead to the antenna to a 12-volt source or to the ignition switch.
Direct the new antenna cable via the same route followed by the original antenna cable on up to the hole in the fender in which the mast will be mounted.
Ground the ground lead from the motor to a clean metal surface on the metal panel near the mount.
Insert the mast into the hole. Face the serrated side of the plastic cable on the bottom of the mast toward the motor side. The plastic cable can be inserted freely to about 12 inches and will stop.
Turn on antenna switch to down position until the plastic cable goes down and catches into the gear mechanism of the drum housing. If the plastic cable does not gear into the mechanism, twist the cable slightly until the cable contacts into the gear mechanism while the motor is in operation.
Stop the motor after the cable goes into the housing 12 to 25 inches.
Secure the bracket or strap to the bottom of the antenna mast and to the metal fender.
Replace the retainer nut to the base of the antenna mast and secure tightly.
Replace the panel that covers the antenna mount area.
If you are as cheap (thrifty?) as I am, you can sometimes screw around with it and get it back together. This usually involves taking the unit out of the vehicle and taking it apart. Probably the best way to deal with it is to replace the unit. Generally you can get to the inside by removing the inner fender. Probably the most difficult part is snaking the wire into the cabin & attaching it to the radio.
my antenna just stopped working in my MR2 2003 Spider. The motor still runs but the antenna will not go up and down. It made a weird noise and I had to pull the top of the antenna up to stop the motor from sounding loud.
Should I replace this or can you disconnect it and push the antenna up and down?
There is a mast available, part number is lnc4134aa or lna4134aa, sorry but I am on holiday and dont recall the correct number.
You may have to remove the antenna and take it apart to retrieve the broken piece of mast, all basic stuff, really eaasy to do.
You can buy the mast aftermarket and on ebay for $25-$35, of pay the dealer $60+ for the same unit.