Power VIS issue

Cosmin161 · 5th April 2020, 07:04

Hello,
I read many threads here about the VIS motors so i've tried fixing mine. I managed to get the balance one working but with the power one i encountered the following problem:
Fixed the tiny dc moor inside, fixed the electrical connection and checked the microswitches for resistence. All ok so i refitted the power VIS.
Before inserting the electrical connector i switched the ignition to on position so i could see if the vis is working. When i connected the cable the vis started spinning, clicked both microswitches but never stoped. It just keeps spinning. Another info that i can give is that when i run a diagnostic tool, at idle , the balance vis is beeing displayed as inacvtive but when i rev the engine it gets activated( as it should). The power VIS is allways displayed as active no mather the rpm.
Can you tell me what signals the vis to open or close?
Any help is apreciated!
PS: I'm romanian, please be kind with my english!

Arctic · 5th April 2020, 09:01

HI Cosmin.
I am sure our resident Vis motor expert ( Stocktake ) will be along shorty he will no doubt give you all the information you need, if not you could always drop him a PM he will not bite.

If he did it would a love one

Cosmin161 · 5th April 2020, 09:20

I'll wait for his answer. Thank you!

stocktake · 5th April 2020, 09:23

I think you may be mixing up the power and balance Vis motors.
It is the balance one that has the ability to continuously go round and round if it is not connected to the balance flap.
The power Vis (the one on the top) could simply over rotate and stop it will not go round and round.
If your balance Vis (the one on the side ) is going round and round you need to take the top off the Vis motor case and re position the cam on the final drive wheel so it is in between the two micro-switches. then when you reassemble it do not attempt to operate the Vis motor unless it is connected to the balance flap as this acts as a stop to stop the motor rotating continuously.
hope that helps.

Now, Steve, where do you want this love bite

Cosmin161 · 5th April 2020, 09:52

This is what i got from reading previous threads.
Balance VIS is the one that controls long/short intake channel.
Power VIS is the one that controls the six butterfly valves and the one that creates the rattle(witch i have).
Balance vis works. I performed a test with my diagnose and i can hear the tini dc motor and even the flap snaping closed.
Power VIS, the one that controls the six butterfly valves, spins continuouslly so please help me with that.

stocktake · 5th April 2020, 10:01

When you say the power Vis spins continuously do you mean the final drive peg can actually be seen going round and round? Or, can you just hear the motor running? If it is the latter then the gearing inside has stripped from the final drive or the "bell end" of the motor has lost its grip on the spindle.

Just for clarity, this is the power Vis

https://www.ebay.co.uk/itm/Land-Rove...MAAMXQjwVQ-hWa

Cosmin161 · 5th April 2020, 10:07

Yes that is the VIS that i am refering to. With ignition on and the VIS in my hand i connect the cable and the wheel starys spinning without stopping. Maybe that the microswitches aren't pushed enough by the cam on the rotating gear? I cand hear both of them clicking though.

5th April 2020, 07:04	#1
Cosmin161 Newbie Rover 75 RJ Join Date: Apr 2020 Location: Ruseni Posts: 22 Thanks: 7 Thanked 5 Times in 3 Posts	Power VIS issue Hello, I read many threads here about the VIS motors so i've tried fixing mine. I managed to get the balance one working but with the power one i encountered the following problem: Fixed the tiny dc moor inside, fixed the electrical connection and checked the microswitches for resistence. All ok so i refitted the power VIS. Before inserting the electrical connector i switched the ignition to on position so i could see if the vis is working. When i connected the cable the vis started spinning, clicked both microswitches but never stoped. It just keeps spinning. Another info that i can give is that when i run a diagnostic tool, at idle , the balance vis is beeing displayed as inacvtive but when i rev the engine it gets activated( as it should). The power VIS is allways displayed as active no mather the rpm. Can you tell me what signals the vis to open or close? Any help is apreciated! PS: I'm romanian, please be kind with my english!

5th April 2020, 09:01	#2
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,717 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	HI Cosmin. I am sure our resident Vis motor expert ( Stocktake ) will be along shorty he will no doubt give you all the information you need, if not you could always drop him a PM he will not bite. If he did it would a love one __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " Last edited by Arctic; 6th April 2020 at 00:49.. Reason: rectification

5th April 2020, 09:23	#4
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,591 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	I think you may be mixing up the power and balance Vis motors. It is the balance one that has the ability to continuously go round and round if it is not connected to the balance flap. The power Vis (the one on the top) could simply over rotate and stop it will not go round and round. If your balance Vis (the one on the side ) is going round and round you need to take the top off the Vis motor case and re position the cam on the final drive wheel so it is in between the two micro-switches. then when you reassemble it do not attempt to operate the Vis motor unless it is connected to the balance flap as this acts as a stop to stop the motor rotating continuously. hope that helps. Now, Steve, where do you want this love bite __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

5th April 2020, 10:01	#6
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,591 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	When you say the power Vis spins continuously do you mean the final drive peg can actually be seen going round and round? Or, can you just hear the motor running? If it is the latter then the gearing inside has stripped from the final drive or the "bell end" of the motor has lost its grip on the spindle. Just for clarity, this is the power Vis https://www.ebay.co.uk/itm/Land-Rove...MAAMXQjwVQ-hWa __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

5th April 2020, 09:20	#3
Cosmin161 Newbie Rover 75 RJ Join Date: Apr 2020 Location: Ruseni Posts: 22 Thanks: 7 Thanked 5 Times in 3 Posts	I'll wait for his answer. Thank you!

5th April 2020, 09:52	#5
Cosmin161 Newbie Rover 75 RJ Join Date: Apr 2020 Location: Ruseni Posts: 22 Thanks: 7 Thanked 5 Times in 3 Posts	This is what i got from reading previous threads. Balance VIS is the one that controls long/short intake channel. Power VIS is the one that controls the six butterfly valves and the one that creates the rattle(witch i have). Balance vis works. I performed a test with my diagnose and i can hear the tini dc motor and even the flap snaping closed. Power VIS, the one that controls the six butterfly valves, spins continuouslly so please help me with that.

5th April 2020, 10:07	#7
Cosmin161 Newbie Rover 75 RJ Join Date: Apr 2020 Location: Ruseni Posts: 22 Thanks: 7 Thanked 5 Times in 3 Posts	Yes that is the VIS that i am refering to. With ignition on and the VIS in my hand i connect the cable and the wheel starys spinning without stopping. Maybe that the microswitches aren't pushed enough by the cam on the rotating gear? I cand hear both of them clicking though.