lloydox-wrx

i have a strange fault on my sti v2 when you put your foot down as the revs build it cut's the ignition rev counter drop's to zero let your foot off and it fire up and it's fine ????

at first i thought it was the boost but i have an AVCR fitted set at 1 bar i have lowered the boost to 0.7 bar but the fault is still there

any idea's please

only other mods are cat back exhaust and a apexi filter

cheers guy's

lloydox-wrx

bttt

chrisl25lnf

do a cell check and see if it brings any thing up..

vessy

You say you lift your foot up then it's fine, is it fine on full throttle or just driving normal?

Could be a wire or connection problem, either loosing contact due to engine twist or accell forces or shorting out, does it do it when driving lightly?

lloydox-wrx

hi chris what is a cell check?

vessy it's when your on full throttle thats why i thought it was cutting it because of the boost but after turning it down this has had no effect

vessy

Does anything else happen, speedo drop or lights dim?

lloydox-wrx

speedo stay's up just the rev counter drops off light's don't dim

are you thinking eathing problems ???

thinking of tring an grounding kit

chrisl25lnf

CELL CHECK IS THERE ARE 2 WIRES UNDER THE DASH HUCK THEM UP GRAY TO GRAY BLACK TO BLACK THIS IS A CELL CHECK TELLS YOU IF THERE ARE ANY PROBLEMS..

vessy

I would check a connector first, shouldn't take you too long, just under the forward edge of the intercooler right in the middle of the engine is a grey connector. Make sure this is together and locked, cam/crank sensor wiring goes through here, one side is fixed to the engine and the other comes through the bulkhead, if the engine tilt is causing this to break connection then you will loose rpm info and hence gauge and ignition.

Jolly Green Monster

iTrader: (4)

try earthing the block to the neg bat terminal just to eliminate an earthing problem.

Simon

phorced_induction

Hi, my first post and had to reply to your question brcause I had the exact same problem with my '93 WRX - 'Ignition cut and rev counter drops under acceleration'. Started off intermittant and got worse and worse.

Caused by faulty/incorrect spark plugs. Fitted new ones - perfect!!
Hope this helps, cheers - Mark.