Moorside

In typical VAG group fashion a couple of throttle pedals were listed. I just gave TPS my registration number. I imagine that if you did the same with your local motor factors they would be able to supply you with the correct one. Be sure that it's a quality Bosch item or similar and not some £40 piece of rubbish. Also don't make the mistake of getting a second hand one as I did because for some reason that didn't cure the problem. A brand new one did so I can only assume that the second hand one was also faulty. I was also told that the very latest brand new version is more reliable. For the sake of £70 ish it's the best option.

After changing the ecu, injector loom, air flow meter, a couple of weak injectors, throttle switch under the servo, throttle body & egr valve, various engine sensors and had an auto electrician run a continuation check he suggested changing the whole throttle pedal /switch even though no fault was showing. To my surprise TPS had this in stock as it apparently is a known fault. One brand new throttle pedal /switch from Skoda (not a pattern part) and I've had no problems since.

Hi. There are absolutely no codes stored whatsoever even when using dealer spec diagnostic equipment. They take the car out for a 45 minutes test drive and the fault doesn't occur. A couple of days later it will then fault just for an instant with no dash warning lights and again no stored codes. I may have to look at a live data OBD dongle. I already have a good known engine loom to try. Any thoughts as to a direct switch 5 volt supply to the throttle pedal?

Cheers. I'll check that out whilst having another check through the loom, connections and earth points. After that my next move was to change the whole engine loom. After that I was going to run a separate 5 volt supply to the throttle pedal switch once finding a suitable feed.

Quick update with my occasional loss of throttle pedal on my 2009 Octavia 2 ltr BKD. No codes are being left when the vehicle temporarily loses it's throttle. Feels just as if the throttle cable, if it had one had just snapped. It usually kicks back in but I feel that this is a dangerous fault especially when pulling away from junctions. To date I've changed the throttle pedal, brake pedal under servo switch, fuel injector/glow plug wiring loom, all the glow plugs whilst easily accessible and the ECU. The fault is still with me. Has anyone else got this or had this problem?

Forget the brake switch and injector loom. My car has just lost throttle response momentarily and then kicked back in again so fault is obviously still present. No warning lights on the dash or fault codes. Back to the drawing board.

Hi. Did you get to the bottom of the intermittent non responsive throttle pedal on your car? I've just drove mine back from the garage albeit a short journey and it appears to be fine. I'll know more later when it's on a lengthy town drive. I replaced an injector that was a little weaker than the other 3 and whilst the cover was off I replaced the injector wiring loom as this has been mentioned on this forum. Additionally to that the servo attached brake pedal switch has been changed due to this being mentioned on many VAG forums. There was a lot of corrosion/crud between the switch and the servo which may have affected the switches operation and gave wrong signals that could have caused the problem that we have/had.

Hi. My glow plug light flashes continually when the throttle stops responding. It resets once the engine is turned off but no faults are stored. My car is at my local VAG independent garage now where the brake light switch is being changed, the glow plugs changed as one of them is intermittent and whilst on a new injector loom is being fitted as the connectors apparently go brittle which in turn could mean that the loom itself may do the same. A you tube clip suggests that the loom can cause problems. Worth a punt whilst the top is off and access is easy. Once the vehicle is back if the fault shows again I'll have the codes read whilst the engine is running and the glow plug light is flashing.

Thanks. I'll check them out.

Thanks again. I'll replace the switch which as you know is situated under the servo in the engine bay with a genuine Skoda item to be fully happy that this isn't an intermittent fault with the item. For £23 it'll be worth it.

I'll post when I get to the bottom of it.

Hi. Thanks for your post. The brake lights are operating as they should. Left foot braking shuts the throttle off abruptly. I'm yet to get a conclusive answer to why the glow plug light flashes. Most common reason cited is that the break lights are not working. The fault can arise just setting off in 1st gear at any pace from rest ie from a junction or any gear at any speed with including 70mph in 6th.

Thanks and will do.

It's exactly one of those hard to reach horrors. I'll have this replaced, take it for a drive and go from there if it's still faulting. After that it'll be a call to the auto electrician to to do voltage readings to and from the throttle pedal, check all earth's and block connectors.