Lost power ??

[Comm99]

Hi just joined,first post.

I've got a 99 vt v6 sedan,K&N panel filter and 2 1/2 inch cat back exhaust ( no resonator).Lately it feels like its lost power, could this just be because its going on 10 years old and I probably treat it like a V8 supercar at times,or could it need some sort of rebuild of some description.
Not wanting to spend massive amounts on power output as it's the family car but some would be nice.

Any thoughts would be appreciated,
Cheers.

[TVR-190]

you would be better asking in this ( VT - VX Holden Commodore (1997 - 2002) - Just Commodores ) section mate.

[vlv8vic]

comm99 - firstly welcome.
you'll get a response from someone in the know in due time.

i moved your thread here as it is more likely to be answered here.

[vnv8driver]

Do you flog the absolute crap out of it (even at times)? if its starting to wear then modding it wont be any good, a rebuild then some mods might be on the cards.

A rebuild which consists of rings, bearings and a hone will set you back about 3 grand drive in, drive out price.

[howepower]

vacume leak hose under the throttle body

[danja]

Is it even worth spending $3k on a flogged VT exec?

I stand by my SOP for rejuvinating VTs:
- give it a service - 20W50 oil + air filter + fuel filter if due (~$50)
- clean the MAF + TB ($5, if you don't already have TB cleaner)
- run a few tanks for premium through it (an extra couple of $ on whatever your fuel bill already is)
- replace the O2 sensors. (~$100-150)

And the end result on all 4 I've done it on is about a 2-3L reduction in fuel consumption, an a totally different feeling car on the road. The engine becomes much more responsive.

All for under $200.

[vnv8driver]

maybe if he likes the car alot, but his post im guessing its lost a fair bit of oomph to be complaining about it

[howepower]

seriosly the vacume hose under the throttle body is off or leaking
is it an ecotec

[jas98]

seriosly the vacume hose under the throttle body is off or leaking
is it an ecotec

this hose under the throttle body....can that cause a short but loud whistle noise when you give the car a quick rev?

[Ozzie]

is it blowing smoke?
might also be that theres no compression in the tranny if it hasnt been serviced. check for trans leaks and take it to be vacumn tested

[Ozzie]

this hose under the throttle body....can that cause a short but loud whistle noise when you give the car a quick rev?

thats probebly just the intake or belt wistling.
though a leaking intake gasket also wistles

[fitz_vt]

Yes when you start or Rev your car if a puff of blue, black or any other colour smoke (except white)comes out of your exhaust take it to a damn mechanic!!!

[jas98]

thats probebly just the intake or belt wistling.
though a leaking intake gasket also wistles

ah ok well car still goes fine etc but just this whistle noise lol is annoying. Hope its not the inlet manifold gasket as the car has only 81 000 on the clock. might make sure all the bolts are torqued down right