Diesel Discovery Engine Only Stops After The Break Pedal Is Pressed

[agent_zed]

Hi,

sorry i realise this isn't a hood question but i have an interesting problem that i was hoping someone could answer.

My girlfriend's fathers discovery has a sticky diesel solenoid which sometimes needs to be hit to start the engine and sometimes to stop it. Recently it won't stop unless you press the brake pedal at which point it turns off. Iam not very good at fault diagnosis but am thinking that it is an earth fault on the solenoid, is this likely to be the problem and if so whats the best way of fixing, just add an extra earth strap or something?

 

any suggeestions appreciated.

[Guest peter2b2002]

Hi , what year is it, 200 or 300 tdi

pete2b

[agent_zed]

Hi , what year is it, 200 or 300 tdi

pete2b

 

ooh don't know iam afraid, my girlfriend doesn't know and they use different plates so i don't know the age. I know it has a manual box and a turbo charger. I think it is around 1990. Cheers.

[Guest allenr03]

One of my ex-girlfriends had a Polo which was impossible to left foot brake with (not that you really needed to with a 1.0l Polo) the reason being that pressing the brake pedal stopped the fuel supply to the engine and as such killed any accelerator input that I put in. I can tell you the only time I did it scared the brown smelly stuff out of me!! Maybe the fuel is being cut when the brake pedal is pressed which stops the engine?

 

Or, perhaps its something to do with the brake servo which I'm guessing takes it vacuum from the inlet manifold.

 

I don't think it will be electrical. But then I don't know that much about these things!!

 

HTH

Rich

[Longboarder]

Sounds like poor contacts and the stop light helps the circuit earth or something. Removal and a clean up of electrical contacts should work.

 

Nigel

[Guest ANDY-C]

Hi there,

 

My wife has a 1993 Disco 200Tdi and i know that there is a vacume system on it that assists the braking system - it could be that while you know there is an undelying fault with the diesel solenid that expeling air from the vacume system once the ignition is off is all that is needed to effectively stall the engine.

 

Either that or like has been said above there is an earth fault.

 

To be honest i'd get the soenoid looked at.

 

Cheers

Andy

[agent_zed]

Cheers all, i'll let him know and see if we can sort it out. His mechanic seems bemused by the whole thing which makes me question how good a mechanic he really is. Thanks again