VIS Tester Now Available. - Page 2

stocktake · 25th February 2009, 18:37

You will have a pm shortly Reebs, you are correct, if the box doesnt perform as instructions your Vis's are not working.

JohnDotCom · 25th February 2009, 18:44

You have a PM from me to Reebs,
Sounds like another person needs new VIS motors.

(or repair if someone can do them for you).

Hantsdave · 27th February 2009, 20:33

Does this work on a similar principle to a stepper motor found on the old efi engines?

D.

stocktake · 27th February 2009, 21:16

You have a PM Dave, hope it is what you wanted to know.

Dan1971 · 27th February 2009, 21:17

Scared .... if I find they're duff ... How much for new ones ? I might not want to know ....

stocktake · 27th February 2009, 21:20

With a car that looks like that Dan you know you have to have it right.

Go to rimmers and punch in part no

MKE 100102 for power VIS
MKE 100110 for Balance VIS

(sit down first)

workaholic_ro · 28th February 2009, 08:51

Quote:

Originally Posted by Hantsdave

Does this work on a similar principle to a stepper motor found on the old efi engines?

D.

It cannot be a similar principle. VIS valves actuators have high revs. and low torque DC motors and worm gears to reduce the speed and increase the torque.
Stepper motors are driven by current pulses, they are relatively slow and give the highest torque when stopped and at very low speeds. It decreases when the speed increases, going close to zero at their speed limit point.

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

25th February 2009, 18:37	#11
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,587 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	You will have a pm shortly Reebs, you are correct, if the box doesnt perform as instructions your Vis's are not working. __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

27th February 2009, 20:33	#13
Hantsdave Loves to post 2004 CDTi SE TOURER Join Date: Jun 2008 Location: Hereford Posts: 427 Thanks: 110 Thanked 67 Times in 38 Posts	Does this work on a similar principle to a stepper motor found on the old efi engines? D. __________________ Previously owned..Austin Mini Countryman, Austin 1100 VDP, Princess 2200HL (x2), Ambassador VDP, TR7, Triumph Stag, Rover 820, Rover 216 GSi, Rover 420D, Rover 600 Si, Rover 600 GSi, Montego GSi, Rover 216 cabriolet, Jaguar XJ6 Gold, Rover 75 1.8, Rover 75 Tourer CDTi (x3), Rover 75 CDT x 2, Rover 75 Connie V6, Rover 45. Jeep Grand Cherokee 4.0 x 2, Jeep Chrokee KK Plus a few other foreign ones I'm too embarrassed to mention..

27th February 2009, 21:16	#14
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,587 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	You have a PM Dave, hope it is what you wanted to know. __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

27th February 2009, 21:17	#15
Dan1971 Avid contributor MK2 ZS180 hatch Join Date: Jan 2009 Location: High Wych Posts: 159 Thanks: 0 Thanked 0 Times in 0 Posts	Scared .... if I find they're duff ... How much for new ones ? I might not want to know .... __________________ If you can keep your head while all around you lose theirs, you really have no idea what is going on.

27th February 2009, 21:20	#16
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,587 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	With a car that looks like that Dan you know you have to have it right. Go to rimmers and punch in part no MKE 100102 for power VIS MKE 100110 for Balance VIS (sit down first) __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

25th February 2009, 18:44	#12
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	You have a PM from me to Reebs, Sounds like another person needs new VIS motors. (or repair if someone can do them for you).