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I have a 85 c4 the antenna will go up but it wont come down. The ribbon is not broke. Tried a new antenna and it did the same thing went up but will not go down to. Looking at the old antenna I think the last owner may have replaced it. The only thing I can think of is that maybe he crossed the wires some how in the back of the radio,seems funny that 2 antennas go up but wont come down when you turn the radio off.Any help with this would be very appreciated Thanks. Bill
 

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I'm sorry, but my first thought was viagra :laughing:
hahaha I thought the same thing!

have you been able to get it to come down at all? if not, your motor might be bad.
 

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I found that if I got out of the car fast enough, the motor was still grinding, and with a little hand pressure, you can push down from the top of the antenna and it will retract.
My permanent fix, was however, by inserting a SPST switch in line with the Antenna motor power wire coming out of the back of the radio. I mounted the switch on the center facia panel along side just to the left of where the radio is installed. By flipping the switch, and disconnecting the power to the antenna, it never rises when you turn the radio on.... issue resolved. Also makes sense when playing CDs, where you don't need a radio antenna at all.
Of course this is only a good solution if you happen to live in a large enough metropolitan area where most radio signals are strong enough... ie-The antenna can capture more than enough signal through the fiberglass in the down or retracted position.
The few times I take my car on the road out of town, I can flip the switch, to raise the antenna, and do the jump out of the car at my destination, and only where people don't recognize me. :D
 

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From this, I gather that the entire unit needs to be replaced or can I get the mast replacement kit?
The mast on the 87 and earlier antennas is a replaceable part but the things are kind of expensive and it's not a trivial job.

When the time came to fix the antenna on my 87 I went with the upgrade kit from MidAmerica. It essentially upgrades the thing to the 88 and later setup. Replacement masts for these are cheap and the process is almost trivial.
 

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The mast on the 87 and earlier antennas is a replaceable part but the things are kind of expensive and it's not a trivial job.

When the time came to fix the antenna on my 87 I went with the upgrade kit from MidAmerica. It essentially upgrades the thing to the 88 and later setup. Replacement masts for these are cheap and the process is almost trivial.

OK, my bad, I thought they made a mast replacement for the 87 that was replaceable from the outside. Now I see you have to remove the whole unit and disassemble it.

Looks like I am out $189 for a new one (upgrade to 88 version).
 

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Check to see if you have a relay behind the drivers seat. 86 converts have this relay and the motor upgrade from Mid America is a good good Idea when the motor goes out.
 
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