Why does my VZ Do this

[Vzille]

Whys my VZ doing this?
Hey guys,
Okay few question about my VZ Executive

1. Why does it putter away from stop start? aka stopped at lights then foot down to take off the putters away barely goes anywhere the finally kicks in and goes.

2. At gear changes fan belt seems to squeal, mostly on high rev gear changes. Why does this happen?

3. At 110km car vibrates and gets worse faster you go?

4. Between 75km and 85km doesn't know wether to change up or down?

Any help would be great 

[Tim_in_NZ]

Give us some more stats
V6 or V8??, 175kw/V6 alloytec i'm guessing...
How many ks.....?
4 speed or 5 speed auto?
service history....?
Could be fuel/coils/basic tune.... how have you been driving it.....??

[Vzille]

2004 V6 alloytec 200,000kms, drive it hard everynow and then but nothing to mayjor

[Torquative]

1. Why does it putter away from stop start? aka stopped at lights then foot down to take off the putters away barely goes anywhere the finally kicks in and goes.

Hard to tell unless someone's there with you. The Alloytec isnt like the Ecotec, it does take "some time to wind up". theres heaps of threads about its sluggish down low etc.

2. At gear changes fan belt seems to squeal, mostly on high rev gear changes. Why does this happen?

When your really thrashing it it happens, because the coolant pump cant slow down quick enough when the shift happens, so the belt slips on the pulley until the 2 sync again. Just watch your tacho, you'll see the needle suddenly drop revs at the change.

3. At 110km car vibrates and gets worse faster you go?

Could be wheel alignment. Could be rim balance. Could be front hubs

4. Between 75km and 85km doesn't know wether to change up or down?

Thats normal for the 4 speed gearbox, just pick what speed you want (I assume your trying to sit on 80 for an 80kph road) and keep it there. Tapping the accelerator readies the car to move, so it shifts down ready to pull ahead, but then when you back off it re-adjusts itself, shifts forward and runs with it.

[Vzille]

Thanx alot Torquative clears up most of it.
Could vibration be caused by shit tires?
Yea i heard they dont have the same pick up, but it shouldnt putter should it? cause you can phyically hear it putter away that finally kicks in.
so no way to stop belt squeal?

[Vsfan95]

one the reasons you cold be getting belt squeal is probably because the drive belt main tensioner assembly is going. My old VS had the same problem and the belt flew off because off it and that same problem caused it putter off and then kick in

[Vzille]

Great now my power steering pump has stuffed up and man is sh*t to turn with out power steering (Not Happy)

[6h84eva]

I've driven a VY S which was real bad on takeoff (stuttered, puttered and generally just thought about moving rather than doing it) until I turned off the TC. Noted better takeoff in my VZ SV6 when I did the same thing....and it's also possible to really get those tyres smoking wildly in this state!

[CAPRILICIOUS WL]

is your car running LPG?
if so my wl stato used to stutter because the tune was out by miles.
after getting the gas serviced and tuned the car is running perfect.

another reason that was causing mine to stutter was the coils, i checked them out

[CAPRILICIOUS WL]

4. Between 75km and 85km doesn't know wether to change up or down?

this is sort off normal if its not way too abvious, what i mean by this is,
lets say your crusing at 75km then you decide to pick up speed to takeover, the car hesitates to pick up speed and change gears.
if you have to plant your foot inorder to get it to pick up speed and change gear then it may be your torque converter.
is there a vibration throughout the car at that speed between 75 -85km?
if so its more likly to be your torque converter.

hope i helped
Cheers
Dave

[CRUSTIN]

Ive heard the vz computer has anti thrash software that prevents the engine from producing too much torque down low to protect the diff and gearbox. vcm suite can get rid of it.