I had some welding done on the car round the A pillar. This destroyed the antenna cable. It also caused a major electrical failure but that was fixed for free. I don't know what work was done.I have repaired and then replaced the antenna. I have also replaced the radio.
The radio works perfectly on FM at all times, and on AM with the ignition off. I think its predecessor did too!
I get whistles, of varying pitch, and other garbage when the ignition is on. The engine need not be running to experience this, so I guess the charging circuit is innocent. The car runs perfectly in every other respect.
I assume this is to do with the ignition, which I assume has some electonic component, but it doesn';t appear to have any effect on its starting or performance.
Running temporary exclusive power from the battery does not fix the problem
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Re: Car radio interference on AM
Well you have done well by replacing the antenna and then the radio. Hmm. Here are some possibilities.
1. Make sure that the ground wire on the new antenna under the body that the antenna connects to is solid. Make sure that you replace any antenna extensions and that they are plugged in solid. you should check for good solid engine grounds on the motor to the body. If you do not see a good one, then add one.
2. You may want to install new spark plug wires that are noise suppression. Be careful with handling them they are delicate.
3. Add a noise suppression kit, which is a bandaid at any car stereo store. Make sure the radio is grounded at the radio with a strap and that the negative is connected to the chassis.
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remove the roof antenna ( unscrew off the mount) buy an aerial for the bumper. run the coaxial cable back to the radio and pull the existing cable out and after fitting a connector on to the end of the new cable plug it into the back of the radio. It will be a lot of trouble to remove the existing cable and roof mount and you will need it at a later date.
Short answer, if it the radio antenna. It should be a fairly large round cable. I promise, the antenna looks completely different from any other wire or cable in the car. Hope that helps. Need a little more info to be more precise.
The antenna is built into the glass but there is a antenna amplifier behind the c pillar cover on the left.this cover is located at the far left of the interior of the vehicle between the rear glass and the rear door.alot of time all that needs to be done is to move and tighten the cable wires at the antenna amp.
Disconnect the cable at the radio. Then unscrew the hardware holding the antenna to the fender. Then pull the antenna base out of the fender, disconnect the cable from the antenna base turning it back and forth with pliers or you can cut it. Do not let the cable fall back into the fender. Now take the cable from the new antenna and duct tape it to new antenna cable. Now inside the car pull on the old cable until the new cable reaches the radio. Plug cable into radio then hook up the hardware on the fender for the new antenna and you're done. Good luck.
There is black box behind back passenger pillar from plastic. This box is responsible for car antenna and rear defogger. There is problematic connection, who cause sparks and plastic and joints on electrical board is melting. open this box and repair melted connections. weld also this two wire to the electrical board.
no, GM producst are fairly eazy.
there is a trim piece that goes around the radio, held on by push tabs... just dont be afraid to tug at the panel. it will pop off..
then 2-3 bolts mounting the radio.
radio will slide out.
if the antenna is in the window, look for a thin filament where it has to jumper across from the body to the glass.. usually up high, and you'll need to remove the pillar trim.
Have you had any elecrical item replaced recently... ie alternator, battery, blower fan etc?
This will sometimes cause the ground path back to the battery to shift, or has higher magnetic interference than the oem unit.
Hope this points you in the right direction.
I charge $40/hr for troubleshooting which is the national average.
Your local stereo shop should be able to sniff out the problem for you n a reasonable amount of time.