Air Conditioning Issues
Thread Starter
Cruising
Joined: Jul 2022
Posts: 12
Likes: 0
Air Conditioning Issues
I am in desperate need of some advice. My AC in my 16 Z51 keeps going out. I took it to a mom/pop shop and they replaced everything except the blower motor. Paid $3400. Didn’t work. Took it to the dealership who said blower motor. Paid $600. Work for a couple months then start same problem.
The issue is it will intermittently not work. Not blow any air (warm or cold). You can hear something engage when you turn the switch in the motor department but absolutely nothing. Next time or a couple drives later…blows fine…no issues. Sometimes it won’t do anything while I’m driving then all the sudden it will start working out of the blue. I tried to take it in and my luck every time I do it’s working so they can’t diagnose the problem. Anyone have this issue and found the fix???
The issue is it will intermittently not work. Not blow any air (warm or cold). You can hear something engage when you turn the switch in the motor department but absolutely nothing. Next time or a couple drives later…blows fine…no issues. Sometimes it won’t do anything while I’m driving then all the sudden it will start working out of the blue. I tried to take it in and my luck every time I do it’s working so they can’t diagnose the problem. Anyone have this issue and found the fix???
Drifting
Joined: Jun 2013
Posts: 1,428
Likes: 478
From: Maryland, USA
to me sounds more related to electrical, anyone trace grounds, test relays? switches/buttons, related sensors for a/c? battery and battery connections? any check engine lights or codes?
the fact that its intermittently to mean is more related to wiring but im no expert but sounds like that
man $3400 I would of said no thanks for that quote and got second or third opinions, but live and learn.
put a full list of exactly what was replaced, because u said the shop did "everything" except blower than dealer did that.
the fact that its intermittently to mean is more related to wiring but im no expert but sounds like that
man $3400 I would of said no thanks for that quote and got second or third opinions, but live and learn.
put a full list of exactly what was replaced, because u said the shop did "everything" except blower than dealer did that.
Melting Slicks
Joined: Aug 2017
Posts: 2,178
Likes: 2,185
From: Massachusetts
AC controls
Sucks when you spend a great deal of money and still have the problem. Sorry.
I watched a Ford video on an AC problem that I wish was for Corvettes. Maybe you can apply so of the lessons learned.
A ODB2 analyzer might help to show the sensors used in disabling the AC.
Water Temp, Air Temp, Cooling Fan On,.....
Your problem is probably not mechanical but a sensor or loose wire.
It would help if someone sent you a wiring diagram for AC, cooling,...
You don't need a parts-changer, you need a troubleshooter.
Good luck.
Title: Some A/C Issues Require You to Think Outside the Box!
I watched a Ford video on an AC problem that I wish was for Corvettes. Maybe you can apply so of the lessons learned.
A ODB2 analyzer might help to show the sensors used in disabling the AC.
Water Temp, Air Temp, Cooling Fan On,.....
Your problem is probably not mechanical but a sensor or loose wire.
It would help if someone sent you a wiring diagram for AC, cooling,...
You don't need a parts-changer, you need a troubleshooter.
Good luck.
Title: Some A/C Issues Require You to Think Outside the Box!
Safety Car
Joined: Dec 2012
Posts: 3,821
Likes: 1,844
From: St. Louis Metro East IL
So the main issue is intermittent blower operation? There are a couple threads that indicate a dirty or corroded electrical connector at the blower motor could be your problem:
https://www.corvetteforum.com/forums...x-for-you.html
https://www.corvetteforum.com/forums...t-working.html
GL
Ron
https://www.corvetteforum.com/forums...x-for-you.html
https://www.corvetteforum.com/forums...t-working.html
GL
Ron
Le Mans Master
Joined: Oct 2014
Posts: 8,662
Likes: 2,722
From: Atlanta GA
So the main issue is intermittent blower operation? There are a couple threads that indicate a dirty or corroded electrical connector at the blower motor could be your problem:
https://www.corvetteforum.com/forums...x-for-you.html
https://www.corvetteforum.com/forums...t-working.html
GL
Ron
https://www.corvetteforum.com/forums...x-for-you.html
https://www.corvetteforum.com/forums...t-working.html
GL
Ron
Very easy to get to .... takes 5 minutes
Dave
Tech Contributor
Joined: Oct 1999
Posts: 40,999
Likes: 9,764
From: Charlotte, NC (formerly Endicott, NY)
I am in desperate need of some advice. My AC in my 16 Z51 keeps going out. I took it to a mom/pop shop and they replaced everything except the blower motor. Paid $3400. Didn’t work. Took it to the dealership who said blower motor. Paid $600. Work for a couple months then start same problem.
The issue is it will intermittently not work. Not blow any air (warm or cold). You can hear something engage when you turn the switch in the motor department but absolutely nothing. Next time or a couple drives later…blows fine…no issues. Sometimes it won’t do anything while I’m driving then all the sudden it will start working out of the blue. I tried to take it in and my luck every time I do it’s working so they can’t diagnose the problem. Anyone have this issue and found the fix???
The issue is it will intermittently not work. Not blow any air (warm or cold). You can hear something engage when you turn the switch in the motor department but absolutely nothing. Next time or a couple drives later…blows fine…no issues. Sometimes it won’t do anything while I’m driving then all the sudden it will start working out of the blue. I tried to take it in and my luck every time I do it’s working so they can’t diagnose the problem. Anyone have this issue and found the fix???
Bill
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Sadly it seems like the mom and pop shop as well as the dealer just threw things at the problem hoping it would solve the problem. Good luck getting things sorted out and your A/C working again.
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Racer
Joined: Mar 2020
Posts: 372
Likes: 141
From: Texas
Had similar issue, they replaced my A/C head unit. Worked better after that, but it still doesn't work as it should if I put it on auto. So I set the vent and fan speed manually now and it's more consistent this way.
/JD
/JD
Pro
Joined: Oct 2013
Posts: 553
Likes: 81
From: Mertztown PA
I had a similar problem with my 2014--sometimes it would work fine and other days it woud only blow warm air. Took it to a Chevy dealer to get fixed and they said it needed a new compressor. After it was replaced it still did the same thing. Took it to another dealer and after ripping everything apart, they discovered a wire that was being pinched. They told us it was like that from when they built it, and after the wear and tear from using it for 7 years(this happened in 2020), it would work sometimes and other times not at all. After replacing it, no troubles since! Good luck with your fix.