Well I returned to the wonderful world of Skoda by convincing my missus to have a Fabia to replace the unreliable piece of french tat that finally died!

However its got a couple of issues, it a 05 plate, Fabia elegance 1.4 (100bhp), with 51k on the clock. The main issue since buying the car is while driving the throttle pedal will just die, and it'll take a gear change or pumping the pedal to get it to respond. It seems to idle very low 300-400rpm, that could just be me being used to diesels though, and while idling every so often for want of a better way of describing it, it will blip, a split second drop of revs/misfire.

So the obvious thing is to pop it onto VCDS? Nope doesn't like VCDS, I can talk to every other module on the ABS, Air Bag, CCM etc but not engine management, checked all the fuses I can see on the end panel. Tried it on a generic OBDII code reader I've got, and it causes some funny things, if I try to read the fault codes it will try to read the ECU then show up as disconnected after a second or two. If I try to read the codes with the engine running it cuts the engine out for a split second, and again disconnects from the car.

Other than this the car drives fine, no engine management lights or other warning lights, MPG is reasonable. The throttle pedal dying while she's driving is the main concern though, although it's not happening all the time, I wouldn't like it to do it while she's pulling out of a junction etc.

If anyone could shed any light on the above I'd be very grateful. Thanks

Does it have an after market stereo in it?

No, standard cd player fitted.

Camshaft position sensor.

Is she running the correct fuel and have the previous owners? The 16v engines *can* have issues and they're not usually cheap to fix properly.

I would of thought just normal happy shopper fuel, I'm assumin these prefer higher octane fuel then? My thoughts were to the cam sensor, especially with some of the live data readings I got on my generic OBDII reader, where it was showing me the RPM was going up to 10k!!

So replace the CPS, reset the ECU, then tell us if it's fixed.

10k would be fun at idle CPS sounds like a reasonable bet but have a quick look at the fuel recommendations in the manual, it'll run on 95 but I believe the AUB is advised to run 97RON.

^{CPS replaced with a brand new one, ECU reset, still the same problem, VCDS nor my generic OBDII reader will read fault codes from the engine management. My generic reader will show live data, and shows erratic idling without the engine running, having used this on alot of vehicles including VAG vehicles, I don't think it's a fault with this, could it be a throttle body fault? Also the cruise control is innop, if thats related at all?!}

Is the cc retro fitted or from factory?

Factory

Right, slight bit of success, changed the baud rate on VCDS and voila, read the ECU, however I've got no fault codes pending, On the live data on VCDS its more steady, but shows the engine idle at about 850rpm, when on the counter it shows below 500rpm. on the readiness tab it shows the Lambda and EGR as failed or unable to test. Another thing I've clocked is there seems to be a delay in me pressing the throttle and the engine responding, I know it's fly-by-wire but this is close to just under a second before it responds. Sorry for rabbiting on, I still think I might be on to something with the throttle body or accelerator pedal.

Throttle pedal sensor?