Hi only just joined as having a few problems with my car.

Firstly if take the key out completely the car carrys on running, and only way to stop the car is to stall it. Once ive done this the car wont start again, lights come on on dash but no starter motor noise.

The car is a mk2 octavia 2.0 140 elegance on a 54 reg, only done 28k miles.

Any ideas appriciated.

Thanks

Had this problem many years ago with a Renault 16 - all because a wrong bulb had been used for a replacement - long shot I know , but ...... ?

Edited 13 January, 200917 yr by DGW
No need to quote original post.

This is rediculous. Get it taken to your local dealer ASAP. Probably a problem with the ignition barrel.

Try to see if the dipped beam can be switched on with the key out.

Also if the horn can be activated in this situation.

If so, probably have to replace the switch.

I don't know how immobilizer deals in this case... probably the key is verified just only before ignition :confused:

Stop using the car now and get it towed up to a dealer/indy garage.

Two distinct possibilities I can think of are the fuel pump stop solenoid has gone (no biggy but needs fixing and i don't know if there is a manual cut off on the modern cars) or the oil seals on the turbo have started to go and you're burning oil.

If it's the turbo it will eventually keep running until it has used up loads of oil and the engine will go bang in a big way meaning it would be new engine time.

Make sure you check your oil level before getting it take to the garage and that it is half way up the dipstick or more.

In your situation it could just be the electronics that control the stop solenoid and starter that have gone tit's up but I for one wouldn't chance it.

Maybe the car knows it was running past turn off so won't start to protect itself, I don't know how clever the electronics are these days.

Edited 13 January, 200917 yr by DGW
No need to quote original post.

Stop using the car now and get it towed up to a dealer.

x2

A "runaway" diesel engine can quickly destroy the engine.

Didn't someone on here have this exact same problem and end up with a new engine ? Was is Tommo ?

Didn't someone on here have this exact same problem and end up with a new engine ? Was is Tommo ?

Quite possibly, i remember somebody getting a new engine after turbo seals going. The PD140 turbo unit isn't exactly known for it's long term reliability either from some posts we are seeing now.

Turbo oil seals get weak, oil is burnt, engine keeps going until it's used up enough of the oil that there isn't lubrication and it's still running and things break big time.

Looks like you've got a good memory

http://briskoda.net/octavia-ii/anyone-know-what-dieseling-means/68567/

Edited 2 October, 200817 yr by cheezemonkhai

Thats the one !!!!

If you do need a new turbo make sure they replace the turbo oil feed pipe with new ones even if you have to pay for them.

They can often start getting clogged which means saying goodbye to the new turbo in a very short time.

My car not revving high at all, just still ticking over without key in...

Car drives perfect by the way, its just sometimes when i come to park up, take key out and it does it. It does this for about ten minutes and sort of turns itself off!

Any ideas??

My car not revving high at all, just still ticking over without key in...

Car drives perfect by the way, its just sometimes when i come to park up, take key out and it does it. It does this for about ten minutes and sort of turns itself off!

Any ideas??

Well there is a solenoid or some electronics controlling the fuel so the only way it can run on is if the fuel supply isn't being cut off and the tank pump is also pumping fuel or if you are running on oil.

What is the oil level on the dipstick?

I'd really get it looked at.

I would want to be very, very sure that it wasn't the turbo myself. A runaway engine is not something you want.

The other thing you have is a vacuum operated anti run on valve which is built into the EGR. It could be jammed.

A runaway engine will just go flat out until it destructs, doesnt sound like it myself.

Either a faulty ignition switch or steering column control unit are the likely suspects at a guess.

I had the exact same problem in my Corrado.

It turned out that the relay that controls the fans that comes in after you switch the engine off had died. To keep the fans running the relay is capable of keeping the ignition on, as mine was faulty the engine wouldn't cut out because the relay was stuck open and keeping it live.

A little tap on the relay itself cut it out but I needed a new one. No idea where it might be on yours but it was a black box about 5 inches x 2 inches x 2 inches.

Tap various relays you can find and see if it effects it.

A runaway engine will just go flat out until it destructs, doesnt sound like it myself.

Either a faulty ignition switch or steering column control unit are the likely suspects at a guess.

I was thinking that it's possibly just seals that are leaking a bit, but fair comment that if they were leaking that much the engine would probably start sucking it in a lot quicker.

Does the 2.0 TDI still have a fuel cut off solenoid?

I wasn't suggesting it was at the stage of runaway yet, if it is leaking seals it is however only a matter of time.

Just re-read the part about the refusing to start after being stalled and I would agree that it does sound electrical.

If it's the turbo it will eventually keep running until it has used up loads of oil and the engine will go bang in a big way meaning it would be new engine time..

Seen the aftermath of a Mk4 Astra GSI's turbo letting go, the turbo let go dumping the oil straight into the engine...blew the engine and caught fire!

Seen the aftermath of a Mk4 Astra GSI's turbo letting go, the turbo let go dumping the oil straight into the engine...blew the engine and caught fire!

Still it's one less astra on the road

54 octavia, only 21000mls, engine continuesto run. Can't stall auto box,disconnected pump. Still dash lights on without key????

54 octavia, only 21000mls, engine continuesto run. Can't stall auto box,disconnected pump. Still dash lights on without key????

Last resort block air intake pipe with a good chunky cloth that won't get sucked up into the engine.

Sounds like a faulty ignition switch, getting a few now.

I have just had an identical problem. Thankfully after reading all the scary expensive stuff  I thought I'd check the easiest solution first . I popped out the side panels in the boot etc found the washer pipe had come apart ,clipped back together with cable ties for extra strength.  Put a fan in the boot blowing on all the wiring left it all day now it's absolutely fine. Simples 

I had this on one of our company cars (VW Caddy). Had to replace the ignition switch, (Which was pretty expensive since it the immobiliser had to be reprogrammed as well), if I remember correctly it was about 500 eur in total.

 

A diesel runaway (Engine continues running on oil) is not the first suspect, in those cases the rpm continues to increase and the engine will fail pretty quickly.

 

 

Blocking air intake to shut the engine didn't work, I ended up removing the fuel pump fuse. (Disconnect battery also doesn't work since the alternator continues to provide power)

 

Edited 12 August, 20187 yr by DJSmiley