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Car Playing Funny Buggers :(

soultz

By soultz,
in Engines & Forced Induction

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soultz Community Regular

soultz

Posted
Posted

hey guys,

took my car to get fuel in the morning yesterday, then washed it. ready for heathcote drag day. we left for the hume highway at 7.30, the car got to the servo fine where we met up with the rest of the cars attending. when we left i started the car all was ok, was travelling down the highway at 100Kmph, then all of a sudden felt the car not shaking but more like a shutter sort of like when you are about to stall it in a manual but all the time...when i accelerated the car would go nowhere untill the turbo kicked in then it JUST dragged the car along...we stopped at a safway on the side of the road, and i turned the car off and back on, and it still done it...i looked under the bonnet and everything seemed ok....i als checked for boost leaks using my gauge, and vaccum and boost was fine...i then turned the car off, left it for a bout 5 mins and turned it back on and it was FINE??!! i still didnt trust it so i left it there all day and went to the drags without it. i came back later that afternoon to grab it and it started fine, drive 50 mins home fine and now runs fine...i cant fault it now??

the car also sort of missfires when i put the foot to the floor at 5000 rpm, but the revvs still keep climbing like normal??? i changed the coilpacks and that helped a LOT, but it still does it under full throttle...its not like a missfire but like a stutter??

can anyone help with BOTH these problems???

cheers!

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https://www.sau.com.au/forums/topic/391524-car-playing-funny-buggers/
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89CAL Grand Master

89CAL

Posted
Posted

Id point towards a plug or sensor got wet or the fuel you got had some crap in it. seen as the only 2 things you did was wash it and put fuel in it. it might clear itself up after a drive, don't flog it to much in the mean time

SargeRX8 Grand Master

SargeRX8

Posted
Posted

In the boot, remove the back board, you will see 4 10mm screws holding down a plate. Remove that. Under there is a black lid thing with 3 hoses. You want to unplug the wires and get a rag ready for when you remove those lines as fuel is going to come out. Keep the hoses out of the way and take that lid off. To do that get a piece of wood and put it in the notches in the lid and tap it with a hammer to loosen it and get it out. Fuel pump is inside. Plenty of guides here to elaborate and show pictures of how to do it, wire it and fit it back in.

Its not a fun job. Don't do it on a hot day and be ready for swearing. DO NOT EVER attempt to do it with more than a quarter fuel in the tank. Hell run it to near empty if you can.

Hanaldo Grand Master

Hanaldo

Posted
Posted (edited)

Fuel pump isn't that hard if you get a good one. my tomei pump was easy as. pull the old one out, drop the new one in

This. Took me half an hour, including diagnosis of why the car wouldn't start when I reversed the polarities :P

Agree with running the tank near empty first though. Arms get real damn itchy immersed in petrol ermm.gif

Edited by Hanaldo
SargeRX8 Grand Master

SargeRX8

Posted
Posted

This. Took me half an hour, including diagnosis of why the car wouldn't start when I reversed the polarities :P

Agree with running the tank near empty first though. Arms get real damn itchy immersed in petrol ermm.gif

And in a hot day, that itch plus the humidity rising from the fuel tank is enough to really f**king frustrate you when you cant get that cradle in the bracket.

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