PDA

View Full Version : Lack of power when putting the foot down



bennoc
06-06-2008, 05:34 PM
This is sort of difficult to explain but I'm hoping someone here gets it and can offer some advice on how to fix it.

My housemate has a VZ Commodore Exec and driving it the other day I noticed the difference in accelleration between it and my TF. When I push the pedal in on the VZ power is there instantly and it only takes slight pressure on the pedal to get it to kick off but when I put the foot on the pedal of mine it takes a lot of pressure on the pedal for it to start moving seriously but before it kicks off hard it's more of a slow accelleration before it gets up to speed.

If anyone can understand it and know how to improve it that would be great or I can clarify what I mean if needed

Red Valdez
06-06-2008, 05:45 PM
When I push the pedal in on the VZ power is there instantly and it only takes slight pressure on the pedal to get it to kick off but when I put the foot on the pedal of mine it takes a lot of pressure on the pedal for it to start moving serious

I don't know about the VZ, but my dad's VE has an electronic throttle, and it's twitchy as all hell. You only need to press the throttle very lightly to get moving.

The Magna (like most other cars of the era, I'm guessing) has an actual cable, hence the extra travel in it. Not sure if there's anything you can do about it.

parker
06-06-2008, 05:50 PM
Yer a VZ has Electronic throttle control.

Screamin TE
06-06-2008, 06:20 PM
i doubt it has to do with that.

Personally, if i were a car manufacturer, and i wanted to market a car to a specific group of people, say cardigan wearing pensioners. I wouldnt be inclined to make the throttle sensitive, moreso the opposite.

Get my drift?

Lucifer
06-06-2008, 07:00 PM
i doubt it has to do with that.

Personally, if i were a car manufacturer, and i wanted to market a car to a specific group of people, say cardigan wearing pensioners. I wouldnt be inclined to make the throttle sensitive, moreso the opposite.

Get my drift?
Only if the Commodore has LSD :P

Could be a number of things, TPS sensor on your magna or even the throttle cable needs tightening.

YLD35L
06-06-2008, 07:10 PM
is it missing 2 cylinders:bowrofl:

bennoc
06-06-2008, 07:34 PM
nah the engine is running spot on, it just ****s me that I have such a flat spot before it kicks off

SupremeMoFo
06-06-2008, 09:33 PM
This is why you don't buy an auto.

I've been in a TF 6G72 - seemed to have enough get up & go to me.

Balkanite
06-06-2008, 10:28 PM
Personally, if i were a car manufacturer, and i wanted to market a car to a specific group of people, say cardigan wearing pensioners. I wouldnt be inclined to make the throttle sensitive, moreso the opposite.


I couldnt agree more, the magna was marketed to the Pensioners wearing cardigans, therefore it needed a little more force to get her going, imagine if it was very sensitive, the pensioners wouldnt have bought them and then we wouldnt have well looked after cars because they only drove down the street once a week with them :D

Life
06-06-2008, 10:39 PM
It'll never accellerate like a VZ with a 3.0L engine. The VZ has a 175kw engine and electronic throttle responce, the 3.0 6g72 has a 140kw engine and a cabled throttle. completely different car and engine, therefore it drives differently.

Dave
06-06-2008, 11:39 PM
It'll never accellerate like a VZ with a 3.0L engine. The VZ has a 175kw engine and electronic throttle responce, the 3.0 6g72 has a 140kw engine and a cabled throttle. completely different car and engine, therefore it drives differently.

the VZ's 175kw alloytec is a piece of **** compared to even the 6g72.

Dave
06-06-2008, 11:40 PM
I couldnt agree more, the magna was marketed to the Pensioners wearing cardigans, therefore it needed a little more force to get her going, imagine if it was very sensitive, the pensioners wouldnt have bought them and then we wouldnt have well looked after cars because they only drove down the street once a week with them :D


since when has it been a good thing that a car is used rarely and on short journeys :nuts:

Lucifer
07-06-2008, 06:40 AM
the VZ's 175kw alloytec is a piece of **** compared to even the 6g72.
I'll disagree there, the alloytech V6 is a pretty nice engine compared to the 6G72.

Dave
07-06-2008, 07:29 AM
I am talking about the first generation alloytec if that makes any difference. It doesnt ever want to rev, and when it does it makes the WORST sound. it doesnt seem to want to get up and boogie, not like the 6g V6's. I know for a fact that mine loves to rev, much harder than my fathers SVZ thats for sure

Lugo
07-06-2008, 10:37 AM
I am talking about the first generation alloytec if that makes any difference. It doesnt ever want to rev, and when it does it makes the WORST sound. it doesnt seem to want to get up and boogie, not like the 6g V6's. I know for a fact that mine loves to rev, much harder than my fathers SVZ thats for sure
Your probably thinking of te VN-VY engine (God that sounds stupid, how long they had more or less the same engine for). The Engine in the VY is a piece of poo, its ok with low revs, want to go somewhere quickly and it pulls back and yeah sounds horrible.

I know a couple of people with VY commies and both of them complain about the engine every time they hammer it, yet they both continue to do so :nuts:

Anyway, the 6G72 isn't particularly brisk off the line compared to a VZ because it doesn't have much in the way of low end torque. That is all.

bryce007
07-06-2008, 11:52 AM
I often drive my fathers WL Caprice with a 5.7L V8 (Same gen as the VZ). Its accellerator is far less sensitive than that of my 3.5L Verada.

I find the verada feels like it has a much faster take off (given that you dont plant the pedal to the floor in the V8 :badgrin: )

Id rekon ive hardly ever pushed the accell past half way in the verada, and even at half way its enough to spin the wheels in first.

doddski
07-06-2008, 01:49 PM
your also trying to compare cars that are approaching the 10 year age gap as well...

the magna is while a great car - a much older peice of engine technology compared to the 'all new' alloytec.

just my 2c

and yeah - the magna was more designed for the older generation taking themselves to BIIIINGO on a whatever day of the week it is, and holdens are more aimed at power hungry rev heads (not totally, but you get what i mean)

more 2c :P

SupremeMoFo
07-06-2008, 02:12 PM
Your probably thinking of te VN-VY engine (God that sounds stupid, how long they had more or less the same engine for). The Engine in the VY is a piece of poo, its ok with low revs, want to go somewhere quickly and it pulls back and yeah sounds horrible.Technically, the Ecotec V6 dates back to 1962.

The Alloytecs just sound so horrible I could never live with one. The Ecotecs just got nasty past 3000rpm.

danthevrxman
07-06-2008, 02:59 PM
i was driving the work VZ acclaim with the alloytec, man it's a piece of crap, the 6g74 engine is 100 times better.

Lugo
07-06-2008, 03:23 PM
Technically, the Ecotec V6 dates back to 1962.
Gee, they are old!

The Alloytecs just sound so horrible I could never live with one. The Ecotecs just got nasty past 3000rpm.
They get nasty when you turn the key lol

Mitsu 3.5L is still better than the VZ's, and we're talking what 8 years nearly between the 3.5L Verada's and VZ Commies? Mitsu was on a winner with that engine :D

Screamin TE
07-06-2008, 08:07 PM
the alloytec is just a molested isuzu engine.
The ecotec is the same as the 3.8 before it, just more pollution crap. The basic design of the motor(3.8L v6, pushrod 2 valve boat anchor) was originally designed by Buick in the 60's. My mate has a Alloytech 190, goes well, especially with the 5spd auto. So smooth, and does about 1800rpm in top gear at 120.

Dave
09-06-2008, 07:12 AM
Your probably thinking of te VN-VY engine (God that sounds stupid, how long they had more or less the same engine for). The Engine in the VY is a piece of poo, its ok with low revs, want to go somewhere quickly and it pulls back and yeah sounds horrible.

I know a couple of people with VY commies and both of them complain about the engine every time they hammer it, yet they both continue to do so :nuts:

Anyway, the 6G72 isn't particularly brisk off the line compared to a VZ because it doesn't have much in the way of low end torque. That is all.

No i am talking about the high feature Alloytec engine that first featured in the VZ model. Both the bog standard and hi-po versions of this engine create around 5kW less than the engines found in the VE

SupremeMoFo
09-06-2008, 04:14 PM
They still sound like **** in the VE.

mad082 magna
10-06-2008, 11:17 AM
to the original poster, if your car a 4spd auto? if so part of the problem will be the massively tall diff in your car. that is why it takes a bit more to get off the line. cable stretch may also be contributing though.

but as someone who has owned a VX commodore with the 153kw v6 (auto) and also 2 manual TH magnas, when you step on the gas the auto commodore feels as though it is pulling as hard, if not harder than my current TH (which ran a 14.8 at willowbank). whether it actually is pulling that hard is a different story, but it FEELS like it is.

Dave
10-06-2008, 04:49 PM
mad082, we were talking about the Alloytec that first appeared in the VZ

mad082 magna
11-06-2008, 07:41 AM
yeah i am well aware of that, but someone had mentioned the earlier motors. i was simply comparing how my car feels to an older, less responsive commodore motor. i have been in an alloytech powered commodore and it feels better than the older ones (not by much though)