What causes a car to 'run on' after its switched off

[Split_Pin]

As above, my wee shoogly Corsa 1.0 has done the above since we got it.

 

However in the last week it has done it a few more times than normal. It's otherwise running great, timing chain is still quiet too so I don't think it's timing, plus there would be a light on the dash flagging the dreaded 'multiple cylinder misfire' code.

 

I've searched the net and come up with a load of what is mostly dismal old tosh from fannoids in answers.yahoo. I did see mention of a dodgy ignition switch and the barrel on mine is not the best but can be a little hard to extract the key if you don't do it a certain way.

 

 

This is the only place where I trust member's mechanical knowledge. Can anyone help?

[Cavcraft]

There's the usual 'helpful' replies from people who clearly don't know the difference between an EGR valve and a frying pan, but this may contain the answer...

 

http://www.corsa-c.co.uk/forum/showthread.php?324107-Engine-still-running-after-taking-key-out-!-HELP!

 

 

Or the excellent VXON website suggests...

 

http://www.vauxhallownersnetwork.co.uk/index.php?threads/corsa-running-but-no-key-in-ignition.334163/

[Split_Pin]

Fabulous, cheers Billy, looks like ignition barrel/switch related after all. Now my next q would be, how do you get the key apart if I buy an ignition barrel and key from a scrappy and need to out my transponder in the new key? I'm fine with the later button keys with the plipper on them, but I have a mega old school solid plastic job that looks sealed up.

[Cavcraft]

I think you'd have to buy the key that goes with the barrel, then get the chip changed over or reprogrammed. I'd imagine the 'net will be full of horror stories about how it's going to cost the national debt of Greece to sort out, but I think it's just a laptop job.

[Richard]

I would tie the old key to the inside of the column shroud. I'm thinking of doing that to the C5 so I can get a spare key cut without spending £££.

[Split_Pin]

Cheers guys. Richard, what do you mean by tying the key?

[Richard]

Just have the old key fixed somewhere so that the transponder can "see" it, then you shouldn't have to worry about coding a new key. It does mean that the car is no longer immobilised though, which is probably more of a problem with a sporty looking Corsa than it is with a C5.

[Barry Cade]

LOL, running on used to have different causes to ALLNEWCARSARESHIT. Used to signal you needed a decoke or the shut of valve in the carb wasn't working..

 

My next door neighbour had an MG Metro when I was a kid, which caused much hilarity. He used to drive everywhere in first gear, and would nip home at lunchtime to collect his piece, abandoning the car in the middle of the street. He'd run up to the front door, taking the keys, whilst the little metro would knock and clatter, grab his lunchbox and run back out, with the little MG still running, and then proceed to turn the starter on the poor wee thing to shoot back to work (in first gear) Mental.

 

Mr Ross, you were one of a kind!

[fordperv]

If it's a corsa c, you can take your fob apart and the transponder chip is wedged into the case, it's rectangular and black, it just pops out but make sure it doesn't fly off and you lose it though

[Split_Pin]

Ah I did read that right Richard! It's a proper shiteist way and I like it but as you say probs nest not on my Corsa.

 

FP it's a Corsa B, pretty old school with no plipper or central locking. The key is just a flat plastic thing with no buttons and a red insert which I presume is the transponder.

 

Tiff I feel sorry for that little Metro. My mum's A reg one did that too nut she got it sorted out.

[cort16]

My old 1.7 Renault 21 used to start itself back up with the keys out it. You be walking away from it and it would just splutter back into life for a few seconds then conk out, then do it again and conk out and it'd be fine. I left it in gear once and it drove itself into the wall at my work. I never quite figured out why it did it.

[alf892]

When I was a kid my Dad ran a little country garage and I was often allowed to drive cars in the yard....from about 8 upwards.

 

Anyway when the petrol tanker came a few cars would have to moved so they could get to the manhole covers. I was helping do this one day and moved an HA van. As I walked away from it it chased me.......until it made pretty heavy contact with the Shell sign.

 

This was my first encounter with running on and at the time I believed it was caused by ghosts..................

[fordperv]

Ah I did read that right Richard! It's a proper shiteist way and I like it but as you say probs nest not on my Corsa.

 

FP it's a Corsa B, pretty old school with no plipper or central locking. The key is just a flat plastic thing with no buttons and a red insert which I presume is the transponder.

 

Tiff I feel sorry for that little Metro. My mum's A reg one did that too nut she got it sorted out.

 

definately tape the old key to the transponder receiver then as others have said -1 shite point for not reading a previous post properly where it says solid plastic key lol

 

[Shep Shepherd]

My 1988 Volvo 240GL would run on comically almost every time I switched its engine off, due to running it on standard unleaded petrol, when it needed to be run on 4-star or super unleaded for best results, both of which I couldn't be bothered to put in it, due to cost considerations and the fact that putting it in such a knackered car was like polishing the brass on RMS Titanic.

[Bren]

Iain L,

You should count your lucky stars - most people cannot get their 1.0 corsa's to start, never mind stop.

 

Stop moaning and just be grateful!

[oldford]

I would tie the old key to the inside of the column shroud. I'm thinking of doing that to the C5 so I can get a spare key cut without spending £££.

The only problem that I can see with that, is if the reading coil reads a bit of the transponder coder from each key, then it won't start.  You could get a normal non immobilise key cut for your 'new' lock from the key that came with it and either tape the old key up next to the reading coil or cut the key blade off your old key and put it on your keyring next to your new key, this way the immobiliser will still function.

 

Either way you'll need to get another key cut to the pattern of your original key to work the door locks with.

[overrun]

My RS has been known to do it a couple of times. This has just been little more than a splutter after removing the key. Followed by a loud hiss. Dieseling valve or something? (I need to read up on this)

 

It did it properly on Saturday when I pulled it outside for a wash. I removed the key and it just kept going. Tried reinserting the key a few times and it made no difference.

It was parked too close to another car to stall it in gear, so I opened the bonnet and choked it with the intake pipe.

 

It reminded me of stopping a petrol or nitro RC car.

 

I have also previously experienced this on two other cars. A Nova SR and a VOlvo 360 GLS. Both carbs.