Had that issue when I first bought my 1999 C5 at 69,000, but actually I noticed a few later after continued use, it started working on its own. No problem since!. 4 years now & it's works fine.
Great video. You have bigger balls than I do. I cringe thinking about tearing a dash out. I'll remember this video if I ever have to rip into mine. I appreciate your C5 vids.
It is technically reachable from under the dash on the driver's side by removing the bottom trim plate... But it will have to be done completely by feel in the dark... I would just remove the dash
Looking to change the Actuators on my 98 C5. Are the Gears in the ones you replaced Plastic to Plastic instead of the Plastic Gear to the Metal Spindle?
The electric blend door is for temperature control. The C5 vent position system is vacuum actuated, so you have a vacuum leak somewhere. Mine is currently doing the same and I will make a video trying to track it down whenever I have time.
Great video. Been watching you, and been subscribed to you since you have had under 200 subscribers. Please keep posting C5 videos, you do great work! One weird question, why do you always say "we" Its just you right? Are there other people at 4K motoring?
Thanks for hanging in there! The channel has been through a few phases. There have been a couple people involved at different points (some behind camera), so I feel that saying "we" is more true to the channel as a whole
Unfortunately, that's a completed answer. Is your ambient temperature displaying correctly? My exterior temperature sensor was not allowing the AC to engage. There are relearn procedures for the HVAC control that must sometimes be followed. Sometimes low Freon could be the culprit.
What about the door or valve that controls the HVAC's fresh air versus recirculated cabin air? Where is that, and can it be replaced? I believe mine is trashed because whenever I'm at a traffic light behind a truck or bus, and my HVAC is in recirc mode, I smell exhaust coming into my car. So I have to turn off the air conditioner until the traffic light turns green. I've owned my C5 for eight years, and this particular problem just started last month.
Does your car still switch vent outputs between defrost and dash vents? Or does everything blow at once? Commonly, a vacuum line failure leads to all of these problems, I should have a video coming soon speaking about it. Vacuum actuators themselves rarely if ever go out
Thank you for replying, and yes it does switch between defrost and dash vents. Even with dash vents, a very small amount of air blows up the defrost vent, causing condensation on the front window's exterior, which is a nuisance. But it's done that since I purchased this 2003 Corvette in 2015. The inability to only recirculate HVAC air suddenly began about a month ago.
Don't know if you can answer this or not but my 2000 with dual climate seems to be weak with the air. I got a cfm meter on ebay and I'm running about 475cfm at the front vent. I just did a test and regardless of the mode, vent, floor, vent & floor and floor def, all the vents blow air. I would think if I put it in vent mode, the floor and def would not have any air. No error codes and the air blows 48 degrees out of all vents when running. Any thoughts? I even did the blend door calibration. Weak air flow could be from all the vents being open?
I'm actually facing the same issue and working on a video for it. The vent controls are vacuum operated and there seems to be a common failure point of the vacuum line behind the battery. As soon as I get to the bottom of it I'll have a video out about it
@@4KMotoring I'm looking at a pic of the vacuum canister and the lines to and from it now. I'll have my mechanic with a smoke machine see if he can find the culprit. I'll also keep you posted.
I have a very important question when you had the dashboard out can you get to the vin number my 02 one side of my vin has left up I need to fix for inspection
Had that issue when I first bought my 1999 C5 at 69,000, but actually I noticed a few later after continued use, it started working on its own. No problem since!. 4 years now & it's works fine.
That's good news! Looking at the failed gear, I would be shocked if there wasn't a brass replacement available somewhere
Great video. You have bigger balls than I do. I cringe thinking about tearing a dash out. I'll remember this video if I ever have to rip into mine. I appreciate your C5 vids.
Having done it multiple times now, I can attest that it really isn't as bad as it first seems
It sucks. I couldn’t sleep so I finally did it and i can happily say it sucks. But it’s done
It's not as hard as you think.
Very impressed you made that job look so easy.
Practice definitely makes a difference! As I said, there's nothing truly difficult about the job, just a tedious process
Excellent overview, thank you.
Great video man! This is in my future
Good luck!
Good video. Thank you!
Always remove the negative terminal first!
That seems like a silly suggestion
Thanks for that. Now I know how to get to those annoying warning lights so I can murder the bulbs with a drill.
Thanks!
Any info on the theoretical way of doing the driver's side without removing the dash?
It is technically reachable from under the dash on the driver's side by removing the bottom trim plate... But it will have to be done completely by feel in the dark... I would just remove the dash
Looking to change the Actuators on my 98 C5. Are the Gears in the ones you replaced Plastic to Plastic instead of the Plastic Gear to the Metal Spindle?
I didn't open them up so not sure, but if I can get another 20 years out of them I'm fine with whatever they're made of
Is this for cold and hot a/c or for changing the position of air flow ? Because i have issues with my 1999 C5 in A/C air flow position doesn’t change
The electric blend door is for temperature control. The C5 vent position system is vacuum actuated, so you have a vacuum leak somewhere. Mine is currently doing the same and I will make a video trying to track it down whenever I have time.
@@4KMotoring thx a lot bro ,i hope you solve it as easy as possible and quick 🤝
I hope you replaced your foam HVAC seals before buttoning everything up!
Nope, the didn't look too bad. That said, I doubt this will be the last time I'll have the dash out of the car.
Great video. Been watching you, and been subscribed to you since you have had under 200 subscribers. Please keep posting C5 videos, you do great work! One weird question, why do you always say "we" Its just you right? Are there other people at 4K motoring?
Thanks for hanging in there!
The channel has been through a few phases. There have been a couple people involved at different points (some behind camera), so I feel that saying "we" is more true to the channel as a whole
Will low Freon effect the function of the blend doors? I have replaced my doors, but still getting codes, and doors are not spinning. Thanks.
Unfortunately, that's a completed answer. Is your ambient temperature displaying correctly? My exterior temperature sensor was not allowing the AC to engage.
There are relearn procedures for the HVAC control that must sometimes be followed. Sometimes low Freon could be the culprit.
@@4KMotoring thanks for the reply. I will check sensors today. Also picking up a diagnostic tool for more info. Thanks again.
What about the door or valve that controls the HVAC's fresh air versus recirculated cabin air? Where is that, and can it be replaced? I believe mine is trashed because whenever I'm at a traffic light behind a truck or bus, and my HVAC is in recirc mode, I smell exhaust coming into my car. So I have to turn off the air conditioner until the traffic light turns green. I've owned my C5 for eight years, and this particular problem just started last month.
Does your car still switch vent outputs between defrost and dash vents? Or does everything blow at once? Commonly, a vacuum line failure leads to all of these problems, I should have a video coming soon speaking about it. Vacuum actuators themselves rarely if ever go out
Thank you for replying, and yes it does switch between defrost and dash vents. Even with dash vents, a very small amount of air blows up the defrost vent, causing condensation on the front window's exterior, which is a nuisance. But it's done that since I purchased this 2003 Corvette in 2015. The inability to only recirculate HVAC air suddenly began about a month ago.
Don't know if you can answer this or not but my 2000 with dual climate seems to be weak with the air. I got a cfm meter on ebay and I'm running about 475cfm at the front vent. I just did a test and regardless of the mode, vent, floor, vent & floor and floor def, all the vents blow air. I would think if I put it in vent mode, the floor and def would not have any air. No error codes and the air blows 48 degrees out of all vents when running. Any thoughts? I even did the blend door calibration. Weak air flow could be from all the vents being open?
I'm actually facing the same issue and working on a video for it. The vent controls are vacuum operated and there seems to be a common failure point of the vacuum line behind the battery. As soon as I get to the bottom of it I'll have a video out about it
@@4KMotoring I'm looking at a pic of the vacuum canister and the lines to and from it now. I'll have my mechanic with a smoke machine see if he can find the culprit. I'll also keep you posted.
@@4KMotoringI have the same issue and would like to see a video on that.
I have a very important question when you had the dashboard out can you get to the vin number my 02 one side of my vin has left up I need to fix for inspection
I don't 100% remember, but I think you had to remove the windshield to access the VIN plate