jim8400

Hi
I am new to this forum I own 1984 C4 and my bose speakers did not work. Radio acted like it worked so I changed the relay behind the information center. No luck all I got was a loud hum from the speakers.
as the battery on the car was draining I put on a battery charger but never switched it from trickle to 6 amps I killed the battery. Put the car on charge car would not start so I disconnected the battery waited 30 seconds and reconnected the battery. The car started Now the following doesn't work anymore Power door locks antenna radio the key in the ignition chime. or the interior lights . Checked all the fuses and they were good. What did I do???

Cruisinfanatic

Ctsy fuse. Switch with another one

jim8400

absolutely perfect must be some corrosion in the fuse holder the fuse I took out 15 amp mini was good I put in a fresh one and everything back to life I cant thank you enough
#1
Now do I try the bose relay swap again one person said that if I got the amplifier hum and no radio one of the speakers is bad.
#2
My ac vents don't change and trying to get at the vac lines through the front isn't working the manual ac and the lines are in there like guitar strings no room. Ive read its usually the main vac line from firewall to the interior ??

jim8400

This forum is awesome

Cruisinfanatic

You can try to change the relay again, but could be the radio. Ever heard it play?

In back of the radio and ac controls there are vac lines. Mine got eaten by mice and defrost vent for one wouldn't change.

Cliff Harris

Look at your vacuum check valve:



The vacuum for the HVAC system comes from here.

jim8400

Ive changed the vac check valve and no change
I need to take the interior panels down and see if a line has been munched.
As far as the radio it looks like it works the clock functions it seeks a station
but I haven't heard it play.

Cruisinfanatic

Make sure RADIO fuse is good. Switch out for known working one
Don't think it's the relay. There would be no sound at all if that was it.

I've had radios in my shop that do as you describe. Try wriggling all the ***** and sliders with the volume up. If that doesn't help, I think it an internal problem with the radio.

WVZR-1

With manual AC there's vacuum select switch on the control. If you can confirm that you've got vacuum to the control from the check valve then I believe you go there maybe.

This control less/rear defog looks pretty complete. This is what the rear of your control will look like. You can ZOOM etc. If you pull the control to only gain access you could likely diagnose better. i ain't the seller and don't know or recommend the seller. I thought it a good look at what to expect.


http://www.ebay.com/itm/1984-1989-Co...BZB4i6&vxp=mtr

jim8400

radio fuse changed nd all I get is a power sound from the speakers. radio acts correct changes stations on seek but no sound

Cruisinfanatic

If you'd like, I'd be glad to test the radio. Would just cost you shipping each way