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Engine running on a bit when I switch ignition off
Posted: Wed May 12, 2010 11:45 pm
by Alison01326
I've done a search for this, but haven't turned anything up - probably because I'm searching for the wrong words.
I have noticed of late that when I switch the ignition off, the engine runs on for a little bit. I've got a diesel engine.
I am fairly sure I understand the reason but can I just ask your collective opinion on one question -How long can I sensibly leave this before I get something done about it? I don't intend to be negligent with my beloved Bongo's health, but we are somewhat financially disadvantaged at present and sod's law says that lots of things are breaking or needing replacing, so I need to work out where this lies in the list of priorities.
Many thanks in advance for your advce.
Re: Engine running on a bit when I switch ignition off
Posted: Wed May 12, 2010 11:53 pm
by missfixit70
Sounds like the stop solenoid on top of the fuel pump playing up, get it sorted asap in case it gets to the point where it won't turn off at all. That should give you enough search hints

Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 12:10 am
by Alison01326
Thank you, Kirsty. And here was me thinking it might be a bit of carbon build up
Have done a search and am now fretting about how fast I can get it dealt with

Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 7:13 am
by mikexgough
Basic Bosch 12 Volt Stop Solenoid £9.99
From these people 
Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 10:08 am
by Alison01326
Thanks. Just phoned our local Mazda dealer (the wonderful ones with the import parts database) and the valve is £197.67 and the O Ring is £6.51. Bit of a difference

Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 10:47 am
by helen&tony
Hi
Alison
I'm going to buy one of those Mike pointed to and add it to the spares cupboard, just in case.....I don't need a Gold-Plated , hang -round- your -neck Bling-Bling Mazda original
Cheers
Helen
Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 11:08 am
by Scott
Alison01326 wrote:Thanks. Just phoned our local Mazda dealer (the wonderful ones with the import parts database) and the valve is £197.67 and the O Ring is £6.51. Bit of a difference

Just for comparisons sake phone a Ford dealer and get a price

Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 11:12 am
by Alison01326
They are our local Ford dealer, Scott!
Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 11:18 am
by Scott
Alison01326 wrote:They are our local Ford dealer, Scott!
hmmm... oh well

Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 1:49 pm
by francophile1947
Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 2:12 pm
by Alison01326
Don't know whether that dignifies a response, really! Seymour is definitely a Boy Bongo - at least he doesn't wear a skirt

Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 2:25 pm
by dunslair
Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 3:01 pm
by bigdaddycain
Alison01326 wrote:Thanks. Just phoned our local Mazda dealer (the wonderful ones with the import parts database) and the valve is £197.67 and the O Ring is £6.51. Bit of a difference

It may be worth popping the electrical connector off the solenoid and give it a clean up? No harm in trying it if it saves a few bob on a new solenoid. Try using electrical contact cleaner spray on the removed connector contacts, and wait for the solution to evaporate before plugging back in. Failing that, WD40 should clean it up,but wipe it off before re-connecting as i find it attracts dirt.
Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 3:32 pm
by missfixit70
I doubt it's the connection as the voltage holds it open, so if the connection was iffy I'd have thought it would be cutting out on you?
Re: Engine running on a bit when I switch ignition off
Posted: Thu May 13, 2010 4:20 pm
by rita
Hi,
Its generally the rubber seat on the valve starting to disintegrate that causes over run.
Take the solenoid out and check it before you buy a new one.