VW BORA JAMMING ON FULL THROTTLE!!!!

[steve y]

Most frightening incident today driving down a dual carriageway, slowed down for a roundabout, I had dipped the clutch but the engine just started to rev flat out! no control whatsoever so I turned off the ignition and tried to re start but it would not start for about two minutes and when it did fire awful smell from the exhaust similar to the rotten egg smell that used to happen on the older catalytic cars in the 90's. starts and ticks over ok but I am very concerned for the return trip in the rush hour tonight! it is a W reg 1.6 petrol, anyone had this happen before?
Steve

[JAHetfield]

Quite possibly a faulty throttle position sensor, I have seen a few fail. Easily confirmed by running an OBD scan and checking live readings from the pedal.

I wouldn't worry too much about the smell, it's probably just because it's the first time the engine was ever revved properly.

[steve y]

sorry to be dense but what is an OBD SCAN?
Steve

[JAHetfield]

On Board Diagnostics

Just below the heater controls, there will be a small panel. Pull it off and you will see the OBD plug, it's about an inch and a half long by half an inch high. You'll either need to buy/borrow a code reader with live data function or take the car to a garage and get them to do it for you.

[davepoth]

steve y said:

sorry to be dense but what is an OBD SCAN?
Steve

On Board Diagnostics Scan - i.e. see if a fault code pops up when you press the accelerator.

[stevieturbo]

steve y said:

sorry to be dense but what is an OBD SCAN?
Steve

That response means you need to take the car to a reputable mechanic.

OBD Scan


http://lmgtfy.com/?q=obd+scan

[anonymous-user]

Is a W reg 1.6 electronic throttle or cable??

[stevieturbo]

Max_Torque said:

Is a W reg 1.6 electronic throttle or cable??

Googling suggests W reg is circa 2000.

Doubt there would be many petrols of that age with DBW ? Probably just a sticky or done cable.

[HustleRussell]

^ no. It re-started and idled normally.

[mtrehy]

Check obvious stuff like something trapping the accelerator pedal. Carpets not fitted correctly etc. If the pedal is fine then check the cable under the bonnet - follow along the length and look for anything suspicious - poor installation, kinks etc. Trace it down to the linkage and again check for anything suspicious like corrosion or poor installation that could be causing issues.

If you don't find something obvious and you are not 100% sure you have rectified it then get it to a mechanic before you kill yourself, or someone else.

[steve y]

thanks to everyone for their in assistance, OBD? I have only been in the motor trade for 40 years! sorry was not thinking clearly yesterday! anyhow it is off to a VW specialist to spank it with a branch
Steve