thought i had fixed it WRONG!!

 

car is suffering from a slight miss when idling. ive cleaned up injector connectors (very corroded) thought that might have done it.

but its still doing it ive gone over the small vac pipes blocking them off to check for air leaks but found none. had a fiddle with as many leccy plugs that i can find but still no joy HELP im getting pissed off now. car doesnt miss when above 2000-2500 rpm either only really at idle. pulled off the coil lpack leads to see if it was them ..nope

 

but i have noticed its missing from both banks of motor (listened to exhausts)

so its something that is generally affecting it not just one bank..

 

also ive found a valve down by the master cylinder that is dissconnected (by the bulkhead there are 2 its the lower one. traced the piping and it runs into the n/s wheel well behind shit shield if this is relevant ???). the pipe coming from it just sits in fresh air nothing connected to it where as the pipe coming from the valve is just blocked off

 

it also smells a bit rich as well as the usual cat smell ??? dunno if this is to do with it..

 

Ive havnt diagnosed the ecu as yet thats for tomorrow

 

could it maybe be lambda sensors?? i dunno im pretty well out of ideas now

 

im getting 2 new air filters as the old ones are pretty dirty but i dont hink this is to do with it.

 

the engine runs fine and pulls well no hesitation or anything from the norm..

 

cant belive there are any compression probs either

 

HEEEEELLLLP !!! :cry: :cry:

Hmmmm have you tried taking the coil pack connectors off whilst the engine is running? See which cylinder doesn't make the engine note change and then do a compression test on that cylinder. I did this on mine to find that the cylinder (no. 4) is very low on compression.

 

Ivan

yeah done this doesnt show anything up as you can see im begining to run out of ideas

thought i had fixed it WRONG!!

 

car is suffering from a slight miss when idling. ive cleaned up injector connectors (very corroded) thought that might have done it.

but its still doing it ive gone over the small vac pipes blocking them off to check for air leaks but found none. had a fiddle with as many leccy plugs that i can find but still no joy HELP im getting pissed off now. car doesnt miss when above 2000-2500 rpm either only really at idle. pulled off the coil lpack leads to see if it was them ..nope

 

but i have noticed its missing from both banks of motor (listened to exhausts)

so its something that is generally affecting it not just one bank..

 

also ive found a valve down by the master cylinder that is dissconnected (by the bulkhead there are 2 its the lower one. traced the piping and it runs into the n/s wheel well behind shit shield if this is relevant ???). the pipe coming from it just sits in fresh air nothing connected to it where as the pipe coming from the valve is just blocked off

 

it also smells a bit rich as well as the usual cat smell ??? dunno if this is to do with it..

 

Ive havnt diagnosed the ecu as yet thats for tomorrow

 

could it maybe be lambda sensors?? i dunno im pretty well out of ideas now

 

im getting 2 new air filters as the old ones are pretty dirty but i dont hink this is to do with it.

 

the engine runs fine and pulls well no hesitation or anything from the norm..

 

cant belive there are any compression probs either

 

HEEEEELLLLP !!! :cry: :cry:

 

 

try cleaning out the idle valve--allso check tps is not out

ok i had that on my cavalier turbo but on the cav i could see it but where is it on the zed???? its ever so slightly more complicated just a bit :rolleyes:

ok i had that on my cavalier turbo but on the cav i could see it but where is it on the zed???? its ever so slightly more complicated just a bit :rolleyes:

 

 

try this http://www.twinturbo.net/ttnettech/iaa/iaa.html

 

HTH ;)

cheers mate tahts helped and thatll be a left hooker then !!! still shows me where it is though

ahh my uncle forgot to give the workshop manual to me when he bought the car (just brought it round its almost 3 inches thick) gonna give this a go its got f`in everthing in it im going throught the diagnostic procedure for unstable idle at the mo hopefully should get as its fairly indepth