VIS Tester Now Available.

JohnDotCom · 19th February 2009, 14:16

The VIS Motors are only fitted to the V6 Petrol Engines not in the Diesel Variants of our Cars.
There are two of these motors in the Manifold one Power Motor and one Balance Motor.
When either of these stop working or both,
the Car uses more Fuel and it can significantly effect the overall Performance.
They are made of Plastic and get contaminated with Oil which stops or Jams movement.

I am a Diesel Man so I'm sure Stocktake and others will correct the above statement,
or put any additional Information required.

A Faulty Removed VIS Valve Motor

Picture borrowed. Thanks.

WeeMan · 19th February 2009, 14:18

AAhhhhhhhhh.... thanks JDC!. Mine are missing then! lol

Greeners · 19th February 2009, 14:23

Well done Dave......

Can I suggest a brief "how to ..." to go with it, so users can establish what should (or shouldn't) happen.

JohnDotCom · 19th February 2009, 14:24

That is typed up and Included with the Tester David,
But a Good Reminder as I forgot to put it inside the Box!! Dooh!!

JohnDotCom · 19th February 2009, 21:25

......and here is a Photo (a poor quality phone one sorry) of the Said Box of tricks.

Dragrad · 20th February 2009, 01:11

Not that I need it... But a BIG Thank you to Stocktake for his excellent contribution to the club. I'm sure it will be appreciated by many a member (fully paid up of course

)

Reebs · 25th February 2009, 18:28

I've just hooked up this unit to my V6, and if I've done it correctly it would seem that both VIS Valves are duff.

Is the car's engine supposed to be running, or at least the ignition be on when using the tester?

I didn't have either on, and with the Power VIS Valve all I get is a click no LED, and with the Balance VIS Valve I get a constant Blue LED and again a click when the button is pressed.

If they are both U/S, do I need to buy new ones, or can they be repaired (I think Stocktake does this doesn't he?)

Harko · 1st March 2009, 22:56

Quote:

Originally Posted by JohnDotCom

The VIS Motors are only fitted to the V6 Petrol Engines not in the Diesel Variants of our Cars....
When either of these stop working or both,
the Car uses more Fuel and it can significantly effect the overall Performance.

Hummm... Ok... So the car used more fuel... how much extra?

For the last 9 months or so I have noticed that I have lost about 65 miles in distance per tank-full of fuel around town - but seems to recover after a trip to cornwall (450 mile round trip) - then degrades over the next few weeks driving around town again. In other words, there is a noticeable difference in fuel economy driving around town before and directly after a long trip.

Could this be related to a VIS motor problem? Are there any other symptoms with VIS motor failure?

Harko

PS> With regards to performance... wouldn't know, I never push the engine/car at all (keep to the speed limits and change up early)

BigRuss · 1st March 2009, 23:15

Quote:

Originally Posted by Harko

Hummm... Ok... So the car used more fuel... how much extra?

For the last 9 months or so I have noticed that I have lost about 65 miles in distance per tank-full of fuel around town - but seems to recover after a trip to cornwall (450 mile round trip) - then degrades over the next few weeks driving around town again. In other words, there is a noticeable difference in fuel economy driving around town before and directly after a long trip.

Could this be related to a VIS motor problem? Are there any other symptoms with VIS motor failure?

Harko

Don't want to worry you but the chances are that one, or both will have packed in. Failure rate is at approx 85%, at the last Midlands meet I tested cars all of which had at least one failed, most both.

(even one that was 4 months old)

Oil ingress unsecured components, and sticking vis butterflies all cause failure.

When I got my V6 both mine were shot and you couldn't really tell that much or when they fail you just get used to it. You will certainly tell the diference when repaired.

If you don't use high revs then the power vis isn't quite as important as the balance one which operates at lower revs and will have an effect on fuel your consumption.

Don't worry too much your car won't come to any harm it just won't be at optimum.

If you can get hold of the vis tester or alternatively get to one of the meets then we can test them for you and may be able to see about repairing them for you.

Russ

Harko · 1st March 2009, 23:26

Quote:

Originally Posted by BigRuss

...Don't worry too much your car won't come to any harm it just won't be at optimum...

Russ

Thanks Russ, I may need to see about getting these checked out. Anything to improve fuel consumption:lol:

Harko

19th February 2009, 14:16	#1
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	The VIS Motors are only fitted to the V6 Petrol Engines not in the Diesel Variants of our Cars. There are two of these motors in the Manifold one Power Motor and one Balance Motor. When either of these stop working or both, the Car uses more Fuel and it can significantly effect the overall Performance. They are made of Plastic and get contaminated with Oil which stops or Jams movement. I am a Diesel Man so I'm sure Stocktake and others will correct the above statement, or put any additional Information required. A Faulty Removed VIS Valve Motor Picture borrowed. Thanks. Last edited by JohnDotCom; 19th February 2009 at 18:58.. Reason: Added extra engine info

19th February 2009, 14:23	#3
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	Well done Dave...... Can I suggest a brief "how to ..." to go with it, so users can establish what should (or shouldn't) happen. __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

20th February 2009, 01:11	#6
Dragrad This is my second home *None DROWNED** Join Date: Aug 2007 Location: Cardigan Posts: 33,339 Thanks: 1,257 Thanked 1,664 Times in 1,081 Posts	Not that I need it... But a BIG Thank you to Stocktake for his excellent contribution to the club. I'm sure it will be appreciated by many a member (fully paid up of course ) __________________ Andrew Ich Dien Problem solving is... lateral thinking SEARCH FIRST ...ASK LATER...

25th February 2009, 18:28	#7
Reebs Owners Club Director Rover 75 Conn SE V6 / MG ZT 260 SE V8 / MG ZT 180 SE V6 Join Date: Feb 2007 Location: Southampton Posts: 20,950 Thanks: 645 Thanked 6,851 Times in 2,537 Posts	I've just hooked up this unit to my V6, and if I've done it correctly it would seem that both VIS Valves are duff. Is the car's engine supposed to be running, or at least the ignition be on when using the tester? I didn't have either on, and with the Power VIS Valve all I get is a click no LED, and with the Balance VIS Valve I get a constant Blue LED and again a click when the button is pressed. If they are both U/S, do I need to buy new ones, or can they be repaired (I think Stocktake does this doesn't he?) __________________ Check your trim here . Check your spec here Check your colour here . Check Project Drive here Check your original price here

19th February 2009, 14:18	#2
WeeMan Posted a thing or two Mazda MX5, BMW 520i Join Date: Feb 2007 Location: Sunny Ayrshire Posts: 1,498 Thanks: 2 Thanked 4 Times in 4 Posts	AAhhhhhhhhh.... thanks JDC!. Mine are missing then! lol

19th February 2009, 14:24	#4
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	That is typed up and Included with the Tester David, But a Good Reminder as I forgot to put it inside the Box!! Dooh!!

19th February 2009, 21:25	#5
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	......and here is a Photo (a poor quality phone one sorry) of the Said Box of tricks.