Hi everyone I notice on my 74 CS the heater works on low to high,
But when I but the A/C on it blows high no matter where the switch is on low or high That's not right any ideas why ,Plus how hard is it to replace front speakers on a 74 and can I get the same size
Thanks all
Steve

 

How is your heater control supposed to work?

I would check the Owner's Manual to see.

Some years/models have a "Max A/C" setting that runs the fan on High, and then step down to normal speeds at the regular A/C setting, and if yours if keeping to high on both, you could have something out of alignment inside your selector switch.

- Eric

 

Steve, you should be able to get speakers for your car at any quality audio shop or even Wal Mart. Here is a good on-line supplier:

http://www.crutchfield.com/

 

Thanks guys

 

Fix it, fix it now!

 

3-1/2" speakers. Take the plastic speaker cover off for access and be careful as the part is known to break.

MAX A/C will put blower speed on high and set the HVAC doors to recirc so you're simply recirculating already cooled air at high velocity. A/C position should allow all blower speeds. Possibility yer control head lever is a little off, or the high blower relay may be sticking.

 

Most of the 3 1/2 speakers have too big of a magnet to fit in the tight factory supplied space. It is not as easy as other have mentioned to get speakers that will work. I have seen people clearance the ductwork in the dash to get a little more space for the magnet to fit and I have ground off the bottom side of my speaker cover to gain a little more space so the cover sits flush. The smallest speakers I could find a few years ago were Blaupunkt and they were still larger than the space available. When I replaced my dash with a better condition piece I left the front speakers out for the time being as my speaker cover is mint condition and I can't bring myself to grind on a perfect cover.

 

I don't blame you

 

I am concerned about this as well. I recently bought these speakers:

https://www.amazon.com/BOSS-CH3220-E...5+inch+speaker

They didn't fit under the factory speaker grilles. I bought aftermarket grilles and got them to work. I hope I don't run out of room when I reinstall the A/C controls on the driver's side.

 

I found these listed and they just may work in the tight dash confines.
http://www.ebay.com/itm/181202166827...%3AMEBIDX%3AIT

 

On your speakers make sure you match the impedance rating to your radio. 4 ohm speakers will not work.

 

They will on mine, I have a vintage Alpine in place of the factory 8 track currently.
When I run the factory radio I have used these guys in Dallas to recone my original speakers with outstanding results.
http://freemantuell.com/Default.aspx