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AC BLOWER MOTOR SPEED VARIES
hello everyone has anyone notice that the ac blower motor varies speeds sometime when you accelerat and decelerate . or on sharp turns under the feeter. my blower motor speed is always on full blast and sometimes i notice it doing this when i accelerate to higher speeds. is there anything that has to do with the alternator i once had a oddyssey van doing this and we cut a piece of wire from alternator or removed dont remember but that took care of this issue. is anyone aware of something like this on our tahoes etc. thanks
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RE: AC BLOWER MOTOR SPEED VARIES
This is normal.
The blower fan speed is slightly reduced when the engine cooling fans are operating to prevent from overloading the electrical system. |
RE: AC BLOWER MOTOR SPEED VARIES
ok thanks
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RE: AC BLOWER MOTOR SPEED VARIES
I have a 2007 Tahoe LT3. My AC fan speed fluctuates and it can happen when I'm sitting at a stoplight. Sometimes it goes up and down several times over the course of 60 seconds. Often times the max AC button will turn off on it's own.
I have brought it to the dealer four times! The first two times they said nothing was wrong. The third time they told me the aspirator was bad and they needed to program something. That worked for about a day. I brought it in a 4th time (today) and they told me they don't know what the problem is so they are going to replace the control head. They added that fan speed fluctuation is normal. I think they just don't know. Like I said, I can drive down the block and on the way the fan speed will go up and down. I sit at a stop sign and the fan speed will go from a middle setting to low and the max ac will shut off. Anyone that knows of a fix for this issue (or what can cause it) then please email me at jjdavis49@sbcglobal.net |
RE: AC BLOWER MOTOR SPEED VARIES
ORIGINAL: nflguy I have a 2007 Tahoe LT3. My AC fan speed fluctuates and it can happen when I'm sitting at a stoplight. Sometimes it goes up and down several times over the course of 60 seconds. Often times the max AC button will turn off on it's own. I have brought it to the dealer four times! The first two times they said nothing was wrong. The third time they told me the aspirator was bad and they needed to program something. That worked for about a day. I brought it in a 4th time (today) and they told me they don't know what the problem is so they are going to replace the control head. They added that fan speed fluctuation is normal. I think they just don't know. Like I said, I can drive down the block and on the way the fan speed will go up and down. I sit at a stop sign and the fan speed will go from a middle setting to low and the max ac will shut off. Anyone that knows of a fix for this issue (or what can cause it) then please email me at jjdavis49@sbcglobal.net This is exactly what my tahoe is doing. I took it to the dealer and they said they had to program something and it worked for about a day and then broke again. The recirculate button turns itself on and off again even at a stop and the fan blows full power then drops down to almost silent then blows full power again. |
Originally Posted by Chris J
(Post 74173)
This is exactly what my tahoe is doing. I took it to the dealer and they said they had to program something and it worked for about a day and then broke again. The recirculate button turns itself on and off again even at a stop and the fan blows full power then drops down to almost silent then blows full power again.
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