VS 5lt Ute dies on hard acceleration

[Gallows84]

Hey everyone searching every where talked to heaps of people and at the end of my tether.

i have just purchased a Vs 5ltr ute and a strange thing is happening.

Firstly car struggles to start cranks 6-7 times before firing up sometime taking up to 12 times and does this weather hot or cold.

Secondly the even weirder thing i will be driving along go to accelerate out of right hand corners eg round-a-bouts the engine dies till you take you foot off the accelerator then place it back on lightly and goes fine again.

and the last thing is that is really seems to struggle above like 3k rpm like it wants to go but just has nothing.

have checked error codes and comes back fine, Spark plugs and leads are new too

Hope you can help and many thanks in advance

Sean

 

[Brett_jjj]

Start by checking for any set ECU error codes.Heres a link that shows you how to do this simple test.
---https://forums.justcommodores.com.au/threads/checking-error-codes-vr-vs-revised.22307---

 

[revhead001]

It could be anything from an air restriction, fuel pump pressure bleeding off or a dodgey coil lead etc. My first thing to check would be the battery terminals (I always do, you would be surprised how many problems start at the battery terminals),

 

[Gallows84]

check battery and it looks all good coil lead seems ok the only replaced recently. Checked the codes just spat back a 12. So frustrating as it doesnt die on a straight or left hand turn only right but it seems to go like **** compared to my last vs. Ashamed to say i think my mrs sirion goes harder then it ATM.

it also seems to hunt when coasting at speed

 

[Brett_jjj]

Id replace the fuel filter next,and if no difference,then check the fuel return line inside the fuel tank.Some bodgey mechanics just snap off the in tank return line when they replace the fuel pump, as this return line can be difficult to remove and refit from inside the tank..This can cause problems as the return line feeds the swirl pot,which is where the fuel pump pickup is located,so its probably starving for fuel under acceleration and around corners.If the return line is connected and ok.Then it could just be a faulty fuel pump.Check out the pics in this link of the pump and swirl pot,its a sedan tank,but the basic setup,the swirl pot etc, is pretty much the same for utes too.It shows the swirl pot,and how the pump sits inside it,the return line feeds back into this swirl pot.
---http://forums.justcommodores.com.au/vr-vs-holden-commodore-1993-1997/135749-fuel-tank-fuel-pump-assembly-swirl-pot.html---

 

[Gallows84]

hey brett fuel filter was changed couple days ago so i will check out that return line tomorrow

cheers everyone for replies. Hope it turns out to not be a big thing

 

[mwemy]

sounds like my old ute that had a blocked pickup in the tank from all the rust, when i turned it was ok cause the rust went somewere else lol...

 

[Gallows84]

It's booked in to mechanic on Thursday checked all the above and everything seemed fine so I'm lost

 

[deanos70]

it sounds to me like fuel, especially if its only on right hand turns and your pick up is on that side

does it do it with a full tank of fuel as well

 

[Blakvsexec]

replace the fuel pump, my 5L vs sedan did the same thing too and was the fuel pump nackered.