flashing lights on temperature controls

[Dreamin]

This is a strange one dealing with a 1989 Vette.

Example: you set the internal temperature to 80 degrees and press the "auto" button. When the inside car temperature reaches 80 degrees the display panel with the number 80 flashes and the light on the "auto" button flashes. If you had used another button (for directional air) the light associated with that button would flash. These lights keep flashing until the internal temperature changes or you reset the temperature. As soon as the internal temperature gets to the number you set,........you got it! Flashing lights again.

When you turn the heat & a/c off, the same thing happens (most of the time). We can't find anything in the car manual or the Hayes manual about this.

Anybody recognize these symptoms? It's very hard to describe and I've probably confused a whole lot of you but here's hoping....

Thanks in advance.

Ann

 

[Baldie88]

Had the same problem with my 88. Take a look at the link I found here on CAC and follow the procedures. Worked for mine. Wish I was as smart about Vettes as the other folks here but that's why I'm here everyday checking. I'm slowly learning to do searches (thanks to Ken) for specific answers to my questions. Thanks to the original responders to this thread that solved my problem.

Ron
"Baldie88"

http://www.corvetteactioncenter.com...p?s=&threadid=20015&highlight=climate+control

 

[vigman]

A/C error codes

1988 AC controller info ( Older post )


There IS another temp sensor in the car,
I'm assuming coupe

Above & between left& right hand seat on center pillar look straight up and back a bit more... center square plastic bit.

Does your ext temp light flash for 60 seconds after ignition is on? That's the OH $hite somethings wrong alert!

Do the following ( key on )
( Asumming coupe again convert's different )
Hold the rear defog button down and then press & release the blower up button.

A number from 1-9 will show in the window with a minus sign up front. This is the MODE number

use the "Warmer" button to scroll thru the MODE numbers press the "cooler" to poll the Mode and get error numbers.

Mode 1 program number
Mode 2 In car sensor
Mode 3 Ambient correction
Mode 4 Blower speed
Mode 5 Outside temp sensor
Mode 6 Feedback pot value ( for hot/ cold door)
Mode 7 Calculated door position

MODE 8 SYSTEM FAULTS
(this is the one you want press cooler NOW)
Mode 9 Software version #

Errors

00 program #
01 feedback pot open (aka where's the frickin door)
02 outside sensor open (broke or missing)
04 Outside sensor shorted(broke or wiring's goofed)
08 IN car sensor open (broke or missing)
16 IN car sensor Shorted(broke or wiring's goofed)

Write these errors down!

To exit turn key off.

Vig!

 

[Dreamin]

Flashing lights on temperature controls

Thank you for your replies and the information. I did spend some hours last night trying to find out if this problem had already been discussed but it's hard to do a search when one is not sure what the key words are.

I've printed the information and we'll try this tonight.

Thank you again.

Ann

 

[vette-dude]

Just click on the link that bldiee 88 provided and it will take you right to it in his reply above.

Randy



:cool

 

[Dreamin]

A note to thank everyone for their help. Hubby did as was instructed and No More Flashing Lights!!!!!

Thank you so much!

Ann