vectra gsi running rough misfires high idle

[shaunft]

Hi guys im new to the site so any help would be greatfully appriciated (HERE WE GO THEN )
I have a vectra c gsi 3.2 its a 53 reg got 57 000 miles on the clock bought the car a couple of weeks ago has got some faults so pluged in my obd2 reader and the codes that came up were 0173 0175 0313 have tried looking for leaks using air and carb cleaner to no evail also missfire on cylinder 5 kept coming up
so today i have replaced all the spark plugs while changing num 5 there was oil in the spark plug well so also replaced all the rocker cover gaskets put every thing back together and it took ages to start the car it took that much the car reverted to just clicking so had to put booster pack on then still took ages but finnaly got it going it ran very lumpy cut out several times but when i did get her going took it for a drive and the idle was high and while driving kept juddering and holding back and sounding as if it was only running on five cylinders so not happy i have cleaned the throttle body checked all connections keeps coming up with code 0313 misfire detected low fuel so any futher advice would be great

[GT3071R]

hi mate and welcome possible coil pack breaking down and misfire detected refers to that. it is fuel trim what that is referring to which can be a duff lambda sensor. are you using lots of fuel? and is your tailpipe very black where its running rich?. have a look and get back to me. Terry

[shaunft]

thanks for the reply terry and yea its drinking the petrol even more now not sure on tail pipes think there is some black on them on the obd2 scan tool the checks i have done on the o2 sensors and gets to where it says o2 transition and says fail but comes up with bank 1 & 2 if it is o2 sensor which would it be as mine has four sensors

[GT3071R]

hi mate not to sure as when ours went i changed all four just to be on the safe side and that cured it. there is other peeps on here that will be able to clarify it a little bit more for you. its one of them moments . if you leave it for a while to go cold then start it up how does it start then?

[6009tristanb]

I had a bad misfire and high rev etc but with mine was easy to work out I cleaned throttle body and it started to misfire etc but was whistling from throttle body so took it off put gasket back on the right way and put sealent on it and it all went back to normal

Sent from my HTC Wildfire using Forum Runner

[GT3071R]

you was lucky with that one

[shaunft]

still running like crap and missfireing soon as i go over 3000 revs eml starts flashing and sounds like an old volkswagon beetle lol
gonna price up a new coil pack monday and start from there

[shaunft]

just an update got the new coil pack and fitted it yesterday thought great but now the fuel pump has stopped working and im getting no petrol to the engine WTF as i fix one problem another crops up (what too do???)

[6009tristanb]

have you checked relays and fuses also clear any codes disconect battery for half hour

[shaunft]

Well guys put new coil pack on the vectra redid all the gaskets and was a pain to get started back up although eventually got it running then i replaced the front flexi pipes and cat section of exhaust as it was blowing bad car started and sounded a lot better was ok for a couple of days then the dredded eml came back on it read FUEL TRIM BANK 1 & 2 THOUGHT WTF so clear it but after so long comes back on checked fuel pump OK checked fuel filter OK cleaned throtle body (WHERE NEXT ANY IDEAS ON WHAT CAN BE CAUSING FUEL TRIM BANK 1 & 2 )