auto lamp
- Thread starter LeeSHO
- Start date
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ohfosho
ontario SHOwner
the auto lamps can be turned off with the sliding switch (im not sure if 1st gen is the same as 2nd gen in that regard?), and when your auto climate control is on auto, it will be running the cooling fan because it is using the air conditioner...to do with keeping humidity down inside. you can turn off auto and have vent and floor if you dont want that fan to come on.
SolidState
No Mo SHO
the fans don't automatically come one with AC. They do with MAX AC, but not under normal circumstances...
something else is wrong...
something else is wrong...
NoSlo
SHO Owner
Daytime Running Lights?
Your car might have daytime running lights, which is different than the auto lamp. The DRL feature (which is standard on Canada cars, and others may have it too (mine does)) turns on the high beams at reduced brightness all the time. It's a good safety feature and also makes for a good transition between day and nighttime auto-lamps, since the headlights are always on. You can tell if it's DRL by setting the multifunction switch to brights, and turning the headlights on and off with the headlight switch. They should look noticeably brighter when the headlight switch is turned on.
The EATC will remember the mode it was last in when you shut off the car. If you had it set to MAX fan and 80 degrees, the fan will fire up when you start the car again. In AUTO mode, the EATC usually will run the blower motor fan at low even when the temperature inside is already what the EATC is set for. This is for ventilation and anti-fogging. The off position is the only position where the fan should always be off.
The EATC has a cutout switch that keeps the fan from blowing in 'auto' mode when it needs to heat up the inside of the car and the engine is still cold. If you have the EATC set for AUTO and a temperature like 75 degrees, and it is cold outside and the engine is cold, it shouldn't turn on the fan until the engine warms up. This cutout can be bypassed by manually selecting the mode.
If you suspect EATC malfunction there is a diagnostic procedure you can do on the EATC by holding down a particular combination of keys. A search on the forum should bring this up.
Your car might have daytime running lights, which is different than the auto lamp. The DRL feature (which is standard on Canada cars, and others may have it too (mine does)) turns on the high beams at reduced brightness all the time. It's a good safety feature and also makes for a good transition between day and nighttime auto-lamps, since the headlights are always on. You can tell if it's DRL by setting the multifunction switch to brights, and turning the headlights on and off with the headlight switch. They should look noticeably brighter when the headlight switch is turned on.
The EATC will remember the mode it was last in when you shut off the car. If you had it set to MAX fan and 80 degrees, the fan will fire up when you start the car again. In AUTO mode, the EATC usually will run the blower motor fan at low even when the temperature inside is already what the EATC is set for. This is for ventilation and anti-fogging. The off position is the only position where the fan should always be off.
The EATC has a cutout switch that keeps the fan from blowing in 'auto' mode when it needs to heat up the inside of the car and the engine is still cold. If you have the EATC set for AUTO and a temperature like 75 degrees, and it is cold outside and the engine is cold, it shouldn't turn on the fan until the engine warms up. This cutout can be bypassed by manually selecting the mode.
If you suspect EATC malfunction there is a diagnostic procedure you can do on the EATC by holding down a particular combination of keys. A search on the forum should bring this up.
matt59
Member
SolidState said:
My 93' is doing the same thing, (A/C pump engaged and fan running).
I know the A/C is suppose to run when in defrost mode but the fan comes on as well
. It does it in auto mode too. What might cause this?NotSoSlowSHO
Gas is $$ WALK!
SolidState said:
With the '89 climate control, fans turn on with either the AC or Defrost on. Low or high.
Anytime the A/C compressor mode is called for and the speed is below 40 or if the A/C system pressure is too high the fans will be on.
If you do not have DRLs then the sun light sensor on the dash maybe bad causing the auto lamps to come on in the daylight.
If you do not have DRLs then the sun light sensor on the dash maybe bad causing the auto lamps to come on in the daylight.
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