MTH Car Wash door issue ? Suggestions ??

 I spent about 7 hours on it so far. I had it completely apart (37 screws) and finally narrowed down the issue. However I don't know exactly how to correct it. It is a nightmare because this has a huge drive chain. Now when it was apart I did check all the switches and all were working as they should. I don't know what else to do.

"""I sure wish someone has some info for me regarding this thing """ 

I am having trouble following this, but if the car is miss positioned, The unit will reset and run around the car until back at the start position.  The door should open to allow the car to pas.  G

When I get it to work as it should. It will operate perfectly over and over again.

However once I shut all power to it from the transformer off, then turn it back on the closed door, motor will run. 

However if I shut it down, manually push the car/ track guide forward a half inch I hear a click which is triggering the next one of the five switches inside. But needless to say after I do that, after applying power once again, it will go around in reset mode "Since I falsely triggered the switch" then returning to its normal stop location and will be ready for use. That is until I shut power to it off.

So basically I have to prep it as mentioned before general use. 

Has anyone ever had this issue and or know of the resolve ?

I remember hearing mention of this door issue many many years ago.

So it must be a common problem with this thing.

I suggest you take it to a MTH Service Center or call MTH and get a return auth. number. Let a trained MTH service person fix it.

I would rather turn it into a new custom accessory. An MTH Burning Car Wash, then to pay for shipping this beast both ways and MTH service fees. Which is no different then purchasing it again. So if that is the case I would rather purchase another.

Still not fully following, but are you saying after the unit completes a round and stops the car, the door closes and the motor keeps turning?  Until you turn power off?  If so, I think the stop limit switch is bad or not being fully engaged.

Moving the car off he stop limit, lets the board know the car is not in position, so the first thing the board does is open the garage door and start moving the car.  So this gets that limit switch out of play.

But if this close limit switch works as long as power is on and the car has been reset, but doesn't after power is removed, that might be a circuit board issue.

I would look hard at the garage door limit switch.  G

Subwayrunner,

Do you not have a Service Center near you? What about calling MTH and talking to a tech.

GGG

Let me say it like this then. After I get it to work, it will work flawlessly time after time again.

However. When I shut power to it off either temporary or for the night. When I put power to it again, the door motor will run. Even though when it was powered off it was not.

Now no matter how much I remove power and add it it will do the same. 

UNLESS during a complete removal of power, I move the car, or its perspective track forward which triggers the next switch. Which then upon adding power to the unit, since I prematurely triggered that switch, it then has to make its full reset completion. Then and only then will it operate flawlessly again time after time. That is until the next day when I power up the unit again for use.

Odd, isn't it ?

sounds like the switch to tell it that the car is in the home position (cycle is complete) isn't right?

It's been a few years since I was inside this.

Does the large plastic flywheel turn easily? I had to file mine slightly to relieve tension so it would spin freely. It was warped.

https://ogrforum.com/t...1-fix-4-mth-car-wash

Jim, I did try talking to an mth rep. Though he was nice and ironically mentioned that I extremely nice considering the situation as most are not. As well as his last call regarding something other. Which is why he went out of his way to thank me for my kindness in the situation. But at the time I thought that it was a switch and that was the majority of conversation on my end. He also mentioned perhaps the plastic gear may be stripped. But since I have checked all switches as well as the gears. All is well.

 Needless to say, as far as MTH service centers near me, unfortunately not. The one that is about 25 miles away has been proven to be less than honest. That being when the owner says to your face when discussing another repair years ago that I had done elsewhere For literally 5$. He says to me, well that wasn't very profitable for him was it. Hahahaha. This was opposed to the 75 $ that he was going to charge me for the same repair.

So sadly other than the fella that did that repar for me I have no one near that I trust. Also that guy is 50 miles away. But as for that fella I am afraid that this thing is just to time consuming of a head ache & I simply don't have the heart to give it to him. Lol

Sorry to hear all this. I fill for you. I understand, if you do not have trust in somebody

you become very reluctant in giving them something to repair.

Sounds like the logic board.  Since this runs fine once you get it powered up, I would think all the gears and switches are ok.

I am running from memory here, but it you can run this with the housing off....

When you apply power after sitting and the garage door motor starts can you tell if it is trying to open or close?  If close can you push the limit switch in and see if that stops the motor?

The door should be closed after the car completes the loop.

Either the limit switch is just barely making contact and releases after you power off, or a gear might be slipping.  The door is closed so the limit switch doesn't re-engage.

But if that is not the issue it just sounds like the logic board doesn't know the door is closed after power is removed and therefore is trying to close it.  Since the limit switch is already closed it will just run continuously.

The car wash board is AG-0000028 and runs $50.   G

I also noticed that these switches, at least the one for closed. That once pushed, that it does its job and tells the board. Once that happens it will not continue closing once released.

Meaning if I use my finger to trigger it. If I press it, it will stop the door. If I release it the door will not continue to close again. 

Which I guess as you mention, perhaps the board is malfunctioning upon powering up when power is first applied. Since the switch would have to be released then triggered again to communicate with the board rather than the switch simply just stopping the motor when pressed.

Which would make sense since after I reset this issue does not occur & all works fine as long as power is never interrupted to the unit. 

What kind of switch are you activating the drive in with? I have a MTH gas station and sometimes the door will start opening when I turn on power. I use a momentary switch to activate the gas station. If I add power the door starts opening. I push the switch button again the door then closes and the station shuts off. The momentary switch I use works like this, if I just push the button lightly it activates the station for one cycle. If I push the button firmly and I hear the switch click the station will continue to cycle untill I push the switch again or turn power off. 

I hope this makes sense.

Yesm the door closed switch.  I am thinking if it is actually open with the door closed it may cause the door motor to try to close, but since the door can't move anymore it can't stop.  The reset tries to drive the door open, which it can do.  Long shot, but worth a try/adjustment.

Otherwise, you are correct and it is what I am implying, the logic memory is lost that the door is closed at start up.  Even though the switch is closed.   G

 >>Long shot, but worth a try/adjustment.

Adjustment of what ?

The limit switch silly.  Loosen it and move it some.  Press the lever several times fully with your finger.  It can be simple dirt or grit or a slight mis-adjustment.  G

That was the first thing that I did with this issue. Bent it, pushed it, loosened it , tested it, ect... Like I mentioned, all works as it should. Everything seems to work as it should,(except the fan, lol) that is until power is cut from the unit.