Well I picked my car up yesterday evening after they fixed the horn.

Driving into work today as I am slowing down for traffic it feels like the car is trying to accelerate, so I press the clutch in and the rev counter is hunting between 1500 and 2000 rpm. When I come to a stop then eventually the car settles to a 1200 rpm idle.

Rang Skoda assist and they had someone out within an hour or so.

Lots of fiddling around, plugged in his 5051 box, no fault codes.

He thinks it is the throttle valve position which has somehow become gunged up and so is sticking open. Hopefully we shall see as I am back to the dealers tomorrow for them to take a look. I will be picking up their 1.8TSI Sport again and going down to their Superb launch.

My mk1 octy used to idle high occasionally due to a dodgy coolant temp sensor but it only did it for 30 seconds or so at a time. Also it only showed an error code occasionally as it has to show a completely stupid value before an error is logged.

Mine very rarely sticks too. It will sit at 1800RPM until you nudge the throttle then it will settle back down again.

I will see what VCDS says tonight and then what the dealer says tomorrow.

Fingers crossed.

I think you just like the TSI better. Just kidding, probably the car sitting still collected some debree that hardened in the wrong place.

So despite Mr Skoda Assist telling me there are no fault codes I find the following when I get home and plug in VCDS.

Address 01: Engine Labels: 06F-907-115-AXX.lbl

Part No SW: 1Z0 907 115 A HW: 1Z0 907 115

Component: 2.0l R4/4V TFSI 0040

Revision: --H10--- Serial number: SKZ7Z0E3361866

Coding: 0203000318070160

Shop #: WSC 25056 576 92345

1 Fault Found:

001287 - Idle Control System RPM: Higher than Expected.

P0507 - 001 - Upper Limit Exceeded

Freeze Frame:

Fault Status: 01100001

Fault Priority: 0

Fault Frequency: 2

Mileage: 62347 km

Time Indication: 0

Date: 2000.00.00

Time: 09:11:33

Freeze Frame:

RPM: 1040 /min

Load: 29.8 %

Speed: 0.0 km/h

Temperature: 30.0°C

Temperature: 23.0°C

Absolute Pres.: 1010.0 mbar

Voltage: 14.478 V

Readiness: 0000 0000

Any thoughts?

The Ross Tech Wiki suggests

16891/P0507/001287 - Idle Control System RPM: Higher than Expected.

Possible Symptoms

Malfunction Indicator Lamp (MIL) active

Possible Causes

Throttle Valve Control Module (J338) dirty/faulty

Wiring/Connector(s) from/to Throttle Valve Control Module (J338)

Possible Solutions

Check Throttle Valve Control Module (J338)

Check Wiring/Connector(s) from/to Throttle Valve Control Module (J338)

I could clear it but will leave it for the dealer in the morning.

5051 :thumbdwn: VCDS

Took it in this morning and it became clear along the way that the problem had gone. He plugged their 5051 in and it said that basic settings needed to be done which he did.

He then said they have replaced a few of these units and if it happens again to call them and they will order the part and have me in to get it changed.

So back to normal for the time being.