On Saturday I started the zed up and I could feel the car missing both on idle and when being driven, this is still happening, what can cause the zed to just start to miss like this. Could it be the leads or the plugs, or anything else?

 

CheerZ

Have a look through these links for the usual suspects. There quite a few things it could be. Chunk's prob was the connection on the l/h/s of ptu which seems to be a favourite.

http://www.zhome.com/ZCMnL/PICS/hes...hesitation.html

 

and also http://www.twinturbo.net/ttnetfaq/F.../hesitate2.html

Give all the injector connectors a wiggle too. Dickie wiring was the cause of a misfire on mine a while back, a new connector solved it :)

 

Cheers

 

Pete

It'll be the wiring to something! Injectors, coilpacks, ptu.........etc etc fookin etc.

Mines has been suffering what feels like an intermittent misfire as well but plenty of power at the top end. Thought TPS but meter says its fine then checked the RHS connector to the PTU - thick with green oxide. Now cleaned and so far no sign of the misfire. I didnt realise there was a LHS connector until reading the posts here so will check that is clean next but I guess that means taking off the boost pipes to get at it.

Maybe has to do with the time of year humidity rising temperatures etc encouraging the oxide in the connectors.

I think I am going to have to eliminate 1 thing at a time, spark plugs, coils etc

LHS PTU connector ;) For some reason its a bitch to get it to seat properly and make a good connection...