Hesitation mis firing back again

Post by **paul72** » Mon Dec 30, 2013 10:46 pm

Ok from my previous threads sum of you will know i had this problem for a while an thought i sorted it but its come back the last week an got alot worse , i now know this is to do with the wet weather as it does not do it on dry days only cold an wet plus if i spray the whole of engine bay with a wd40 kind of spray it doesnt do it but i cant find which part it is , ive even tried damp start an that didnt work , any ideas its driving me scatty .
Only does it low revs and clears wen u put ur foot down then after driving 10 mins or driving fast it goes

CrunchyAdams82 · Post by **CrunchyAdams82** » Mon Dec 30, 2013 10:53 pm

Have you changed the dizzy, leads, spark plugs, & connections mate? Sounds like you have a weak link somewhere.

And the IACV/EGR/throttle body been cleaned up?

All vac hoses good?

Post by **paul72** » Mon Dec 30, 2013 10:59 pm

Yes mate i replaced everything u can think off as i get trade from work so just did every part there was im trying to think wen it started but im sure its wen weather turned bad but like i said sum days it doesnt do it at all really weird

coupeciviclsi · Post by **coupeciviclsi** » Tue Dec 31, 2013 12:12 am

This sounds like exactly the same problem I have

if you figure it out let me know please

CrunchyAdams82 · Post by **CrunchyAdams82** » Tue Dec 31, 2013 2:35 am

Ok, firstly let's consider this may be being caused by water ingress or damp. You're not the only one who's suffering from these symptoms right now..

So, bit of a long shot, but have you checked all your earthing points for a good connection/corrosion?

And have you checked your ECU for signs of ingress/corrosion? As well as the fuse/relay box in the engine bay?

Have you checked all exposed electrical plugs in the engine bay that could have taken in water from a deep puddle splash?

Other ideas..

When was your cambelt last done? If it's worn, it could be slipping teeth every so often - hence running good, then running poor.

When were the valve clearances last done?

Have you checked the tension on the cambelt? The auto-tensioner could be on it's last legs. Or if it's got a manual tensioner fitted, maybe it needs adjusting.

Could it be your O2/Lambda sensor is knackered, & confusing the computer?

Or, finally, is your catalytic converter blocked perhaps??

Post by **paul72** » Tue Dec 31, 2013 7:40 am

Ok some of those things i can say yes too but the confusing bit is when i spray wd40 stuff over all plugs and electrics it doesnt do it an i know wat ur thinking do one thing each day but i tried that an sometimes it doesnt do it hence u never know if u got the rite one , i really do think its moisture in electric althou i do also think it mite be o2 sensor as changed it for second hand one a while ago but it did not look the same but no one has a spare one i can try as getting fed up buying new bits

Post by **Donald** » Tue Dec 31, 2013 11:58 am

Is it definitely missing?

'92 Si VTEC · Post by **jjmartin349571** » Tue Dec 31, 2013 12:08 pm

If it's only giving you problems when cold I don't think it can be the O2 sensor, as far as I'm aware the ECU doesn't 'listen' to the signal from that sensor until after the engine has warmed up?

I had similar trouble recently on my Accord, turned out to be a bad coil pack. May not be the same problem as yours, but mine seemed to have packed up just as the torrential rain arrived...

Post by **paul72** » Tue Dec 31, 2013 1:44 pm

It doesnt do it straight away when cold its about one mile down road as temp gauge goes up a bit

mercutio · Post by **mercutio** » Tue Dec 31, 2013 4:14 pm

how often are you driving it? and rather than spraying wd40 all the time get some paper towel and dry the inside of the dizzy cap and take the plugs out and check them

Lude Generation

Hesitation mis firing back again

Hesitation mis firing back again

Re: Hesitation mis firing back again