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VS commie is really pissing me off... need some advice

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changed the radiator, and lost a bit of gearbox oil, not much i thought, but enough to make the shift from 1st to 2nd (auto) delay a bit, or slip or something...

so i added some gearbox oil to the trans oil pipe (no i didnt put it in the engine oil) and now its doing this weird thing when i drive it... i cant work out if the engine is misfiring, or if the gearbox is screwing up... it revs clean and nice, but put her in drive and when i accelerate it spits and backfires, kinda like a misfire but not as persistent... is it possible i've put too much gearbox oil in? its all i can think of because before i added gearbox oil, it was sweet as...

PS. adding oil fixed the shifting problem, but now i have this crap

any advice would be greatly appreciated

cheers
stuey
 

Z2TT

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Hey Stuey mate Which type of Gearbox Oil did you add?
 

Brett_jjj

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To me it sounds like theres either a faulty spark plug,plug lead,or ignition coil, sometimes when this happens,the engine will idle ok and rev out ok in neutral,but once its driving along with a load on the engine,either the plugs,leads or coils can break down under load and cause misfiring.Id try new leads and plugs first up,if its still the same after that,then replace the 3 ignition coils...
EDIT:Just noticed its a V8,theres not 3 coils on a V8.
 
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yea but this problem only occurred as soon as I added the gearbox oil... like, its fine when I pull up to my house, but then after I add the oil its rooted... instant... the other thing is that when its cold its fine but once hot, then its crap.
 

Brett_jjj

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yeah checked error codes just keep getting 12. I'm thinking it had to be coincidence because the gearbox couldnt possibly make the car back fire. one of the leads I just found was resting on the extractor, didn't burn right through, but may have screwed it up... I'll change the leads tonight av's free what happens... other wise I'm buggered for ideas
 

EDGE3

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When you changed the radiator did you bleed the air out of it,and maybe you did put too much oil into the trans
 

hako

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My money is on the lead that's been too close to the extractor.
 

Cpt Awesome

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well i had same symtoms on my v6, fine when cold and in neutral but what appeared to be misfiring when hot. I concluded it was the Crank Angle Sensor because when i poured a few litres of water on to the harmonic balancer the issue went away till it got warm again. but could've been other things so i just replaced Motor and box for a new lot.
 
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