know this is a long shot knowing what zeds are like but for the past week my tt zed has begun to misbehave. idle some times erratic and hunting. sometimes idels is fine but not for long and has an obvious miss at about 2000rpm both stationary and moving. spent most of my day at work tinkering, found some leaks on the inlet piping and lots of corrosion on connectors but with lots of cleaning they all seem good. Car always starts like normal and idles fine when cold. but first 2-3 minuets of driving is not good at all. hesitates and horrific flat spot but when hot anything over 2200ish rpm car feels great.

 

just wanted to ask if anyone would have thought on a suspect area for me to start at. most common stuff iv looked at and checked. tomorrow i will be ohm testing injectors and such. just don't want to blindly change parts xD

 

any help would be greatly appreciated

 

thanks

I had a problen like that once and it turned out to be a combination of the MAF and CAS combined

Ah ok cool thanks. I'll be doing some tests today and a compression test on friday. Need to get my conzult up and running again

update:

 

had datascan plugged in and problem seems to be on the drivers side bank. when turning cylinders off it seems 1,3 and 5 dont make much difference in running at idle. however 2,4 and 6 is very noticeable. this also makes sense from listening to the exhaust, passenger side sounds smooth. sounding like a wiring fault to me.

Maybe worth checking compression on the drivers side of the engine, if they are all much lower than the good side it is very likely a cambelt, cam timing issue.

 

Jeff

yeah iv got that planed for Friday. borrowing one of a mate at work

also it seems to be fine on load like going up hill or accelerating