•••••urgent ignition issue•••••

[dc292177917]

hi mates...
few days ago my car jumped on a speed hump...
yea that was my fault i didnt see it...
muffler has a crack and sounds like a fart can now...
apart from that a thing came up later this week
the tachometer is dancing sometimes at the beginning of this drama,
it's like the pin dances/jumps around the actual rpm i m doing but not lower than that.
i thought it was some electrical issues at first...
now it has developed to miss-firing when i push it hard when warmed up,
it idles fine but it did stall once when i was crusing at 100ks.
vtec still kicks in fine but i can feel there's a flat spot/choking at abt 4500rpm...
anyway, no clue on wt's going wrong.
dizzy? spark lead? ECU? vacuum leak?
any replies will be highly appreciated.

cheers,
derek

[bennjamin]

check your spark plug leads are plugged in firmly.

[dougie_504]

I'd check plugs and leads, and reset the ECU. Check the dizzy for cracks while you're at it, and for any burning smells after driving.

[sxmachine]

Also check the o2 sensor just in case but can't see if that would be the problem but might aswell check it

[jdm_b16a]

All good advice. It would appear to be an electrical issue - just check that everything (leads, plugs, dizzy, etc) is secure on the engine (as mentioned).

Peter

[dc292177917]

car ended up got tolled to workshop today...
was driving to the workshop to check it out and it didn't make it...
for the miss-firing and stalling issue it ended up is a fked up dizzy...
for the elect issue, no clue still :(
any advice mates?

cheers

[drgtr]

I say the bump has jolted your vehicle speed sensor. They go easily too and cheap anough from ebay. 35 bucks I got my one for from Ebay US seller. Easy to put in too. That will fix your tacho problem.

[dc292177917]

does VSS relate to tacho? :O
i thought it's abt speedo only...
the speedo is ok atm...

[vinnY]

if the dizzy's whacked a good known replacement unit should fix the problem too

vss only affects the speedo

[dc292177917]

thz for all the advice guys :)
end up all the dramas are brought by a faulty dizzy...

[MM89]

if the tacho was jumping around and there was misfiring when hot, then it was probs just your ICM. Hope you didn't buy a new dizzy

[dc292177917]

got a new dizzy and the all the issues are gone...
so i think it was the dizzy's problem
wt's ICM btw? cheers

[dougie_504]

It's the igniter