NOTE: MY ENGINE IS DEF A Z18XE!
Hello, if anyone can give me a bit of advice, I'd be more than grateful!!! I'm pretty cak when it comes to motors though so pls be kind.
I've got a 52 1.8 Sxi Z18XE. Over the last couple of days, when starting the engine from cold, it's idle revs are erratic as hell, sometimes stalling then back up to 800. I can put my foot down in 1st and I'll very gently kangaroo as the engine tries to sort itself out then suddenly it'll rev ok. For 1-2 mins driving I've gotta be careful at junctions but after that (engine nice n'warm), everything thing seems back to normal although there does feel like a overall drop in power (went up a tiny gradient in 3rd today and actually started losing speed...)
As a note, I've just embarked on my first mod and 3 weeks ago de-restricted the airbox (veccy induction pipe to be when I get 5), could I have done something daft when de-restricting?? I've checked the airbox is back where it should be but could I have just knocked off a sensor from somewhere? Changed the bulbs to xenons too, could I have knocked anything vital here?
I've read it could be the throttle body or EGR, just weird how it's only on a cold engine; the overall power-loss is a worry too!