If you were here I would give you a BIG HUG (I'm a woman). I did exactly what you said & it worked like a charm. It had been stuck on 75 degrees so I just learned to live with it. I live in Florida so I was melting in the summer. The winter wasn't as bad since I just dressed in 3 layers of clothes, mukluks & gloves. Thanks again. ;)

I hate to tell you but this is a temporary fix for the early stages of the problem. The real problem is the ribbon cable (3 wires) between the circuit board attached to the blend knob that runs to the main HVAC control board. When you turn the blend knob right to left over the years, the small circuit board turns slightly with it which caused the outside wires of the ribbon to break. When you tighten the nut, it holds the small circuit board more steady for a short while. Eventually the wires fully break and it stops working. Remove the HVAC from the console, open the case and look at the ribbon cable and you will see the solder has broken on the outside two wires. Using 3 new small wires, just solder them to the existing contacts and jump the points, by-passing the old ribbon cable. I have done a few of these over the years and always mean to video the real repair. Hope this helps.

Thank you for posting something so simple and easy. Even the easy fixes are appreciated...

This was tremendous. Wife has been complaining about inconsistent heat for quite a while, and local repairmen just stared scratching their heads. Inside of a minute I had the problem corrected. Only thing I did wrong was I told her the problem was a loose nut behind wheel (instead of knob)...Doctor says I should make a complete recovery. Thanks for the great tip.

Thanks. We’ve had a problem with the thermostat in our van for a year now. Watched this video and I was able to resolve it. Slightly different fix but same concept. Thank you!!

Thank you so much for this video!! I was able to fix my A/C in no time and saved God only knows how much at the shop/dealership!! And I didn't even have to pop the hood. Doesn't get better than that! Thank you, thank you, thank you!!!

Thanks! I noticed my temperature knob was a bit loose and was able to tighten it up with no issues at all

very practical information from an excellent technical teacher, thank you...

You saved me $1000 thanks so much!

To fix it right re-solder the broken wires on the potentiometer. Tightening the nut only puts pressure on the broken wires which will work until you hit a bump in the road and they lose contact again.

I have fixed many of these lose knobs. The problem is the wires brake at the circuit board. You can fix the wires but you have take the unit apart and soider the wires back to the board. There are 3 wires to repair. The wires are in a ribbon and brake when the nut gets lose and the wires move back and forth with the switch being lose. A new unit is like 700-800 dollars or repair the wires for 3 hours labor.

Okay...is this guy still alive? Because I consider him the father of YT mechanic videos..can't tell you how many times he has helped me fix things that other YT vids couldn't! He explains it so simply! Please...someone get this guy a drink....

Saving people money. Your the best.

Excellent tip! You saved me a lot of time! Thank you very much!

Sir, what I couldn't figure out is how you got to the point that you determined it wasn't mechanical. Did you attempt to adjust the knob and felt that it was loose. I think we sometimes get blinders on and forget to look at the things staring us in the face. It would have been hours before I would have thought to check that nut. Thank you for all your wonderful posts.

Some people it's just this but mine has the broken ribbon wire.... I'm probably gonna buy the dorman kit Bought this car hoping it would be reliable and now I'm already dealing with headaches.

great video bud thanks.

thank you. you are the best.

It worked and it really was that easy!

Good stuff!

what is the name of the part you are fixing..the middle knob switch..I would like to replace the part all the way to the circuit board

I recently bought a 1994 mustang gt and my AC knob is free spinning with no resistance I took the knob off to check if the nut was loose and there was no nut and I did some research and there is not supposed to be either does anybody know what to do to fix a knob that is not supposed to have a nut?

This is 9 years ago but in case anyone sees this, my problem isn’t the nut but the actual metal rod. The metal rod keeps spinning inside the hole that’s inside the nut. How would I fix this? Please if anyone can help

you make great videos

What is it called ? I’m

Do appreciate this

Fixed me right up!

*Mary Jane!* - and others: *Please switch off the ignition before. Remove the key from the ignition lock!*

Could you put a touch of Loctite on it?

bottom line here is.... you might ?? be able to tighten the loose nut to keep the whole switch from turning also when you turn the control .. but.. the wires are already broken.. period... you might get lucky enough to tighten it and they will touch together again and function.. but the ribbon wires are already broken if the A/C goes in and out when you turn the control knob...

What if you cant get the knob off?

long time no here/see. Hope you're well.

Great video but it's shocking to see this kind of quality control problem on a Toyota. They are not what they used to be.

how much did you charge this lady or guy to do this lol

Id say he was going to steal it :-/

that will be .. 150 dollars ..

Good stuff, and lets be honest here, you dont need a loose nut behind your knob, do you?

John why r u mad that I asked a question lol

Espanol

:-)

For the real fix see my videos

Too much talking