Misfiring on tickover

raj3930 · Apr 3, 2007

Hi all.

Got a 2001 V6 which runs rough on tickover. When put on the diagnostic computer it showed misfires on cylinders 3 and 5 when idling.Anything above those revs and it seems to clear itself. Have fitted new plugs and H.T. leads without sorting it. Would appreciate any help in finding the cause. Cheers

ming · Apr 3, 2007

raj3930 said:
Hi all.

Got a 2001 V6 which runs rough on tickover. When put on the diagnostic computer it showed misfires on cylinders 3 and 5 when idling.Anything above those revs and it seems to clear itself. Have fitted new plugs and H.T. leads without sorting it. Would appreciate any help in finding the cause. Cheers

slitty hat man is the v6 eggspert eal be along later. . .

The Mad Hat Man · Apr 3, 2007

sticky viz valves (arm and a leg) or throttle body? those wud, i wud have thort affected all cylinders tho. Try the obvious - leads and plugs furst. Just coz they are new dont mean they aint duff.

raj3930 · Apr 4, 2007

Thanks for that.Pretty sure the garage tried swapping them around but for some reason the misfire is only on 3 and 5. Is it possibly an ECU problem ?

clutchdust · Apr 4, 2007

check continuity from ecu to coils, make sure all pins are good and there are no broken wires etc.

Could be an ecu fault but i doubt it, make sure there are no air leaks too.

raj3930 · Apr 5, 2007

OK thanks.I will see what I can find.

Misfiring on tickover

raj3930

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